new icons and settings.

Use transparent status bar color

Closes #2203

See merge request fdroid/fdroidclient!1029

CHANGELOG.md

@@ -1,3 +1,27 @@
+### 1.13-alpha1 (2021-06-02)
+
+* Stop repeated updates of Trichrome Library
+
+* More changes to follow Material Design (@proletarius101)
+
+* Improve OpenCollective badge (@ConnyDuck)
+
+### 1.13-alpha0 (2021-04-22)
+
+* Theme support tied to built-in Android themes (@proletarius101)
+
+* New top banner notifications: "No Internet" and "No Data or WiFi enabled"
+
+* Improved handling of USB-OTG and SD Card repos and mirrors
+
+### 1.12.1 (2021-04-12)
+
+* Fix trove4j verification error
+
+### 1.12 (2021-04-06)
+
+* Sync translations
+
 ### 1.12-alpha3 (2021-03-10)
 
 * Opt-in F-Droid Metrics

README.md

@@ -1,6 +1,6 @@
 # F-Droid Client
 
-[![build status](https://gitlab.com/fdroid/fdroidclient/badges/master/build.svg)](https://gitlab.com/fdroid/fdroidclient/builds)
+[![build status](https://gitlab.com/fdroid/fdroidclient/badges/master/pipeline.svg)](https://gitlab.com/fdroid/fdroidclient/-/jobs)
 [![Translation status](https://hosted.weblate.org/widgets/f-droid/-/svg-badge.svg)](https://hosted.weblate.org/engage/f-droid/)
 
 Client for [F-Droid](https://f-droid.org), the Free Software repository system

app/build.gradle

@@ -21,16 +21,16 @@ def basicApplicationId = "org.fdroid.basic"
 def privilegedExtensionApplicationId = '"org.fdroid.fdroid.privileged"'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
 
     defaultConfig {
-        versionCode 1012050
+        versionCode 1013001
         versionName getVersionName()
 
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
-        minSdkVersion 14
+        minSdkVersion 24
         //noinspection ExpiredTargetSdkVersion
-        targetSdkVersion 25
+        targetSdkVersion 28
         /*
           The Android Testing Support Library collects analytics to continuously improve the testing
           experience. More specifically, it uploads a hash of the package name of the application
@@ -38,6 +38,7 @@ android {
           passing the following argument to the test runner: disableAnalytics "true".
          */
         testInstrumentationRunnerArguments disableAnalytics: 'true'
+        vectorDrawables.useSupportLibrary = true
     }
 
     buildTypes {
@@ -141,10 +142,9 @@ android {
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.appcompat:appcompat:1.3.0'
     implementation 'androidx.preference:preference:1.1.1'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
-    implementation 'androidx.annotation:annotation:1.1.0'
     implementation 'androidx.recyclerview:recyclerview:1.1.0'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.vectordrawable:vectordrawable:1.1.0'
@@ -152,18 +152,19 @@ dependencies {
     implementation 'androidx.palette:palette:1.0.0'
     implementation 'androidx.work:work-runtime:2.4.0'
 
-    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'com.google.android.material:material:1.3.0'
 
     implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
     implementation 'com.google.zxing:core:3.3.3'
-    implementation 'info.guardianproject.netcipher:netcipher:2.0.0-beta1'
+    implementation 'info.guardianproject.netcipher:netcipher:2.2.0-alpha'
     implementation 'info.guardianproject.panic:panic:1.0'
     implementation 'commons-io:commons-io:2.6'
     implementation 'commons-net:commons-net:3.6'
     implementation 'ch.acra:acra:4.9.1'
-    implementation 'io.reactivex:rxjava:1.1.0'
     implementation 'com.hannesdorfmann:adapterdelegates3:3.0.1'
-    implementation 'com.ashokvarma.android:bottom-navigation-bar:2.0.5'
+
+    implementation 'io.reactivex.rxjava3:rxandroid:3.0.0'
+    implementation 'io.reactivex.rxjava3:rxjava:3.0.9'
 
     implementation 'com.fasterxml.jackson.core:jackson-core:2.11.1'
     implementation 'com.fasterxml.jackson.core:jackson-annotations:2.11.1'

app/proguard-rules.pro

@@ -31,13 +31,6 @@
     public *;
 }
 
-# The rxjava library depends on sun.misc.Unsafe, which is unavailable on Android
-# The rxjava team is aware of this, and mention in the docs that they only use
-# the unsafe functionality if the platform supports it.
-#  - https://github.com/ReactiveX/RxJava/issues/1415#issuecomment-48390883
-#  - https://github.com/ReactiveX/RxJava/blob/1.x/src/main/java/rx/internal/util/unsafe/UnsafeAccess.java#L23
--dontwarn rx.internal.util.**
-
 -keepattributes *Annotation*,EnclosingMethod,Signature
 -keepnames class com.fasterxml.jackson.** { *; }
 -dontwarn com.fasterxml.jackson.databind.ext.**

app/src/androidTest/AndroidManifest.xml

@@ -1,18 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
+
 <!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          xmlns:tools="http://schemas.android.com/tools"
+    xmlns:tools="http://schemas.android.com/tools"
-          package="org.fdroid.fdroid.tests"
+    package="org.fdroid.fdroid.tests"
-          android:versionCode="1"
+    android:versionCode="1"
-          android:versionName="1.0">
+    android:versionName="1.0">
+
     <uses-sdk tools:overrideLibrary="android_libs.ub_uiautomator" />
+
     <!-- We add an application tag here just so that we can indicate that
          this package needs to link against the android.test library,
          which is needed when building test cases. -->
     <application>
-        <uses-library android:name="android.test.runner"
+        <uses-library
+            android:name="android.test.runner"
             android:required="false" />
     </application>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
 </manifest>

app/src/androidTest/java/org/fdroid/fdroid/MainActivityEspressoTest.java

@@ -21,7 +21,7 @@ import androidx.test.uiautomator.UiObjectNotFoundException;
 import androidx.test.uiautomator.UiSelector;
 import android.util.Log;
 import android.view.View;
-import org.fdroid.fdroid.views.BannerUpdatingRepos;
+import org.fdroid.fdroid.views.StatusBanner;
 import org.fdroid.fdroid.views.main.MainActivity;
 import org.hamcrest.Matchers;
 import org.junit.After;
@@ -267,7 +267,7 @@ public class MainActivityEspressoTest {
         if (!BuildConfig.FLAVOR.startsWith("full")) {
             return;
         }
-        onView(Matchers.<View>instanceOf(BannerUpdatingRepos.class)).check(matches(not(isDisplayed())));
+        onView(Matchers.<View>instanceOf(StatusBanner.class)).check(matches(not(isDisplayed())));
         onView(allOf(withText(R.string.menu_settings), isDisplayed())).perform(click());
         onView(allOf(withText(R.string.main_menu__latest_apps), isDisplayed())).perform(click());
         onView(allOf(withId(R.id.swipe_to_refresh), isDisplayed()))

app/src/basic/res/xml/preferences.xml

@@ -1,13 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-        xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <PreferenceScreen android:title="@string/about_title">
+    <PreferenceScreen android:title="@string/about_title"
-        <intent
+        android:key="pref_about" />
-                android:action="android.intent.action.MAIN"
-                android:targetPackage="@string/applicationId"
-                android:targetClass="org.fdroid.fdroid.AboutActivity"/>
-    </PreferenceScreen>
 
     <PreferenceCategory android:title="@string/preference_category__my_apps">
         <PreferenceScreen android:title="@string/preference_manage_installed_apps">
@@ -47,7 +42,7 @@
                 android:title="@string/over_data"
                 android:defaultValue="@integer/defaultOverData"
                 android:layout="@layout/preference_seekbar"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:title="@string/update_auto_download"
                 android:summary="@string/update_auto_download_summary"
                 android:key="updateAutoDownload"/>
@@ -56,7 +51,7 @@
                 android:title="@string/update_interval"
                 android:defaultValue="@integer/defaultUpdateInterval"
                 android:layout="@layout/preference_seekbar"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:title="@string/notify"
                 android:defaultValue="true"
                 android:key="updateNotify"/>
@@ -77,26 +72,26 @@
 
     <PreferenceCategory android:title="@string/appcompatibility"
                                                       android:key="pref_category_appcompatibility">
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:title="@string/show_incompat_versions"
                 android:defaultValue="false"
                 android:key="incompatibleVersions"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:title="@string/show_anti_feature_apps"
                 android:defaultValue="false"
                 android:key="showAntiFeatureApps"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:title="@string/force_touch_apps"
                 android:defaultValue="false"
                 android:key="ignoreTouchscreen"/>
     </PreferenceCategory>
 
     <PreferenceCategory android:title="@string/proxy">
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:key="useTor"
                 android:summary="@string/useTorSummary"
                 android:title="@string/useTor"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:defaultValue="false"
                 android:key="enableProxy"
                 android:title="@string/enable_proxy_title"
@@ -116,12 +111,12 @@
     <PreferenceCategory
             android:key="pref_category_privacy"
             android:title="@string/privacy">
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:key="promptToSendCrashReports"
                 android:title="@string/prompt_to_send_crash_reports"
                 android:summary="@string/prompt_to_send_crash_reports_summary"
                 android:defaultValue="true"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:defaultValue="false"
                 android:key="preventScreenshots"
                 android:summary="@string/preventScreenshots_summary"
@@ -137,7 +132,7 @@
                 android:defaultValue="86400000"
                 android:entries="@array/keepCacheNames"
                 android:entryValues="@array/keepCacheValues"/>
-        <SwitchPreference
+        <SwitchPreferenceCompat
                 android:title="@string/expert"
                 android:defaultValue="false"
                 android:key="expert"/>

app/src/debug/AndroidManifest.xml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
+
 <!-- This file should be outside of release manifest (in this case app/src/mock/Manifest.xml -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <!--required to enable/disable system animations from the app itself during Espresso test runs-->
-    <uses-permission android:name="android.permission.SET_ANIMATION_SCALE"/>
+    <uses-permission android:name="android.permission.SET_ANIMATION_SCALE" />
 </manifest>

app/src/full/AndroidManifest.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
+
 <!--
  * Copyright (C) 2010-2012 Ciaran Gultnieks
  * Copyright (C) 2013-2017 Peter Serwylo
@@ -23,91 +24,128 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="org.fdroid.fdroid"
+    package="org.fdroid.fdroid"
-          android:installLocation="auto">
+    android:installLocation="auto">
 
-    <uses-feature android:name="android.hardware.nfc" android:required="false"/>
+    <uses-feature
-    <uses-feature android:name="android.hardware.bluetooth" android:required="false"/>
+        android:name="android.hardware.nfc"
-    <uses-feature android:name="android.hardware.usb.host" android:required="false"/>
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.bluetooth"
+        android:required="false" />
 
-    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-feature
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+        android:name="android.hardware.usb.host"
-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
+        android:required="false" />
-    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"/>
-    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
-    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
-    <uses-permission android:name="android.permission.BLUETOOTH"/>
-    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
-    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.WRITE_SETTINGS"/>
-    <uses-permission android:name="android.permission.NFC"/>
-    <uses-permission android:name="android.permission.USB_PERMISSION"
-                     android:maxSdkVersion="22"/> <!-- maybe unnecessary -->
-    <uses-permission android:name="android.permission.WAKE_LOCK"/>
 
-    <uses-permission-sdk-23 android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
+    <uses-permission android:name="android.permission.NFC" />
+    <uses-permission
+        android:name="android.permission.USB_PERMISSION"
+        android:maxSdkVersion="22" /><!-- maybe unnecessary -->
+
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+
+    <uses-permission-sdk-23 android:name="android.permission.ACCESS_COARSE_LOCATION" />
 
     <application>
 
         <activity
-                android:label="@string/swap"
+            android:name=".nearby.SwapWorkflowActivity"
-                android:name=".nearby.SwapWorkflowActivity"
+            android:configChanges="orientation|keyboardHidden"
-                android:parentActivityName=".views.main.MainActivity"
+            android:label="@string/swap"
-                android:launchMode="singleTask"
+            android:launchMode="singleTask"
-                android:theme="@style/SwapTheme.Wizard"
+            android:parentActivityName=".views.main.MainActivity"
-                android:screenOrientation="portrait"
+            android:screenOrientation="portrait">
-                android:configChanges="orientation|keyboardHidden">
             <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
+                android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.main.MainActivity"/>
+                android:value=".views.main.MainActivity" />
         </activity>
 
+        <activity
+            android:name=".panic.PanicPreferencesActivity"
+            android:label="@string/panic_settings"
+            android:parentActivityName=".views.main.MainActivity">
+            <intent-filter>
+                <action android:name="info.guardianproject.panic.action.CONNECT" />
+                <action android:name="info.guardianproject.panic.action.DISCONNECT" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".views.main.MainActivity" />
+        </activity>
+
+        <activity
+            android:name=".panic.SelectInstalledAppsActivity"
+            android:parentActivityName=".panic.PanicPreferencesActivity" />
+
+        <activity
+            android:name=".panic.PanicResponderActivity"
+            android:noHistory="true"
+            android:theme="@android:style/Theme.NoDisplay">
+
+            <!-- this can never have launchMode singleTask or singleInstance! -->
+            <intent-filter>
+                <action android:name="info.guardianproject.panic.action.TRIGGER" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".panic.ExitActivity"
+            android:theme="@android:style/Theme.NoDisplay" />
+
+        <activity
+            android:name=".panic.CalculatorActivity"
+            android:enabled="false"
+            android:icon="@mipmap/ic_calculator_launcher"
+            android:label="@string/hiding_calculator">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
         <receiver android:name=".nearby.WifiStateChangeReceiver">
             <intent-filter>
-                <action android:name="android.net.wifi.STATE_CHANGE"/>
+                <action android:name="android.net.wifi.STATE_CHANGE" />
             </intent-filter>
         </receiver>
-
         <receiver android:name=".receiver.DeviceStorageReceiver">
             <intent-filter>
-                <action android:name="android.intent.action.DEVICE_STORAGE_LOW"/>
+                <action android:name="android.intent.action.DEVICE_STORAGE_LOW" />
             </intent-filter>
         </receiver>
 
-        <service
+        <receiver android:name=".nearby.UsbDeviceAttachedReceiver">
-                android:name=".nearby.WifiStateChangeService"
-                android:exported="false"/>
-        <service android:name=".nearby.SwapService"/>
-
-        <service
-                android:name=".nearby.LocalRepoService"
-                android:exported="false"/>
-        <service
-                android:name=".nearby.TreeUriScannerIntentService"
-                android:exported="false"/>
-        <service
-                android:name=".nearby.SDCardScannerService"
-                android:exported="false"/>
-
-        <receiver
-                android:name=".nearby.UsbDeviceAttachedReceiver">
             <intent-filter>
-                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"/>
+                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
             </intent-filter>
             <meta-data
-                    android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
+                android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
-                    android:resource="@xml/device_filter"/>
+                android:resource="@xml/device_filter" />
         </receiver>
-        <receiver
+        <receiver android:name=".nearby.UsbDeviceDetachedReceiver">
-                android:name=".nearby.UsbDeviceDetachedReceiver">
             <intent-filter>
-                <action android:name="android.hardware.usb.action.USB_DEVICE_DETACHED"/>
+                <action android:name="android.hardware.usb.action.USB_DEVICE_DETACHED" />
             </intent-filter>
             <meta-data
-                    android:name="android.hardware.usb.action.USB_DEVICE_DETACHED"
+                android:name="android.hardware.usb.action.USB_DEVICE_DETACHED"
-                    android:resource="@xml/device_filter"/>
+                android:resource="@xml/device_filter" />
         </receiver>
         <receiver android:name=".nearby.UsbDeviceMediaMountedReceiver">
             <intent-filter>
@@ -121,52 +159,20 @@
             </intent-filter>
         </receiver>
 
-        <activity
+        <service
-                android:name=".panic.PanicPreferencesActivity"
+            android:name=".nearby.WifiStateChangeService"
-                android:label="@string/panic_settings"
+            android:exported="false" />
-                android:parentActivityName=".views.main.MainActivity">
+        <service android:name=".nearby.SwapService" />
-            <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.main.MainActivity"/>
 
-            <intent-filter>
+        <service
-                <action android:name="info.guardianproject.panic.action.CONNECT"/>
+            android:name=".nearby.LocalRepoService"
-                <action android:name="info.guardianproject.panic.action.DISCONNECT"/>
+            android:exported="false" />
-
+        <service
-                <category android:name="android.intent.category.DEFAULT"/>
+            android:name=".nearby.TreeUriScannerIntentService"
-            </intent-filter>
+            android:exported="false" />
-        </activity>
+        <service
-        <activity
+            android:name=".nearby.SDCardScannerService"
-                android:name=".panic.SelectInstalledAppsActivity"
+            android:exported="false" />
-                android:parentActivityName=".panic.PanicPreferencesActivity"/>
-
-        <activity
-                android:name=".panic.PanicResponderActivity"
-                android:noHistory="true"
-                android:theme="@android:style/Theme.NoDisplay">
-
-            <!-- this can never have launchMode singleTask or singleInstance! -->
-            <intent-filter>
-                <action android:name="info.guardianproject.panic.action.TRIGGER"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
-            </intent-filter>
-        </activity>
-        <activity
-                android:name=".panic.ExitActivity"
-                android:theme="@android:style/Theme.NoDisplay"/>
-        <activity
-                android:name=".panic.CalculatorActivity"
-                android:enabled="false"
-                android:icon="@mipmap/ic_calculator_launcher"
-                android:label="@string/hiding_calculator"
-                android:theme="@style/AppThemeLight">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
 
     </application>
 

app/src/full/java/javax/jmdns/impl/FDroidServiceInfo.java

@@ -4,12 +4,13 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
 
-import javax.jmdns.ServiceInfo;
-import javax.jmdns.impl.util.ByteWrangler;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.UnknownHostException;
 
+import javax.jmdns.ServiceInfo;
+import javax.jmdns.impl.util.ByteWrangler;
+
 /**
  * The ServiceInfo class needs to be serialized in order to be sent as an Android broadcast.
  * In order to make it Parcelable (or Serializable for that matter), there are some package-scope

app/src/full/java/org/fdroid/fdroid/nearby/BluetoothManager.java

@@ -10,15 +10,17 @@ import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Message;
 import android.os.Process;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import android.text.TextUtils;
 import android.util.Log;
+
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.nearby.peers.BluetoothPeer;
 
 import java.lang.ref.WeakReference;
 
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 /**
  * Manage the {@link android.bluetooth.BluetoothAdapter}in a {@link HandlerThread}.
  * The start process is in {@link HandlerThread#onLooperPrepared()} so that it is

app/src/full/java/org/fdroid/fdroid/nearby/BluetoothServer.java

@@ -5,7 +5,7 @@ import android.bluetooth.BluetoothServerSocket;
 import android.bluetooth.BluetoothSocket;
 import android.util.Log;
 import android.webkit.MimeTypeMap;
-import fi.iki.elonen.NanoHTTPD;
+
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.nearby.httpish.Request;
 import org.fdroid.fdroid.nearby.httpish.Response;
@@ -20,6 +20,8 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import fi.iki.elonen.NanoHTTPD;
+
 /**
  * Act as a layer on top of LocalHTTPD server, by forwarding requests served
  * over bluetooth to that server.

app/src/full/java/org/fdroid/fdroid/nearby/BonjourManager.java

@@ -10,9 +10,6 @@ import android.os.Process;
 import android.text.TextUtils;
 import android.util.Log;
 
-import androidx.core.content.ContextCompat;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.Preferences;
 import org.fdroid.fdroid.Utils;
@@ -28,6 +25,9 @@ import javax.jmdns.ServiceEvent;
 import javax.jmdns.ServiceInfo;
 import javax.jmdns.ServiceListener;
 
+import androidx.core.content.ContextCompat;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 /**
  * Manage {@link JmDNS} in a {@link HandlerThread}.  The start process is in
  * {@link HandlerThread#onLooperPrepared()} so that it is always started before

app/src/full/java/org/fdroid/fdroid/nearby/LocalHTTPD.java

@@ -35,11 +35,9 @@ package org.fdroid.fdroid.nearby;
 
 import android.content.Context;
 import android.net.Uri;
-import fi.iki.elonen.NanoHTTPD;
+
-import fi.iki.elonen.NanoHTTPD.Response.IStatus;
 import org.fdroid.fdroid.BuildConfig;
 
-import javax.net.ssl.SSLServerSocketFactory;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
@@ -62,6 +60,11 @@ import java.util.Map;
 import java.util.StringTokenizer;
 import java.util.TimeZone;
 
+import javax.net.ssl.SSLServerSocketFactory;
+
+import fi.iki.elonen.NanoHTTPD;
+import fi.iki.elonen.NanoHTTPD.Response.IStatus;
+
 /**
  * A HTTP server for serving the files that are being swapped via WiFi, etc.
  * The only changes were to remove unneeded extras like {@code main()}, the

app/src/full/java/org/fdroid/fdroid/nearby/LocalHTTPDManager.java

@@ -6,8 +6,8 @@ import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Message;
 import android.os.Process;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import android.util.Log;
+
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.Preferences;
 
@@ -15,6 +15,8 @@ import java.io.IOException;
 import java.net.BindException;
 import java.util.Random;
 
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 /**
  * Manage {@link LocalHTTPD} in a {@link HandlerThread};
  */

app/src/full/java/org/fdroid/fdroid/nearby/LocalRepoKeyStore.java

@@ -2,7 +2,7 @@ package org.fdroid.fdroid.nearby;
 
 import android.content.Context;
 import android.util.Log;
-import kellinwood.security.zipsigner.ZipSigner;
+
 import org.bouncycastle.asn1.ASN1Sequence;
 import org.bouncycastle.asn1.x500.X500Name;
 import org.bouncycastle.asn1.x509.GeneralName;
@@ -19,9 +19,6 @@ import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.Utils;
 
-import javax.net.ssl.KeyManager;
-import javax.net.ssl.KeyManagerFactory;
-import javax.net.ssl.X509KeyManager;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -49,6 +46,12 @@ import java.util.Date;
 import java.util.GregorianCalendar;
 import java.util.Locale;
 
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.X509KeyManager;
+
+import kellinwood.security.zipsigner.ZipSigner;
+
 // TODO Address exception handling in a uniform way throughout
 
 @SuppressWarnings("LineLength")

app/src/full/java/org/fdroid/fdroid/nearby/LocalRepoManager.java

@@ -12,8 +12,7 @@ import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.text.TextUtils;
 import android.util.Log;
-import androidx.annotation.NonNull;
+
-import androidx.annotation.Nullable;
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.Hasher;
 import org.fdroid.fdroid.IndexUpdater;
@@ -50,6 +49,9 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
 /**
  * The {@link SwapService} deals with managing the entire workflow from selecting apps to
  * swap, to invoking this class to prepare the webroot, to enabling various communication protocols.

app/src/full/java/org/fdroid/fdroid/nearby/LocalRepoService.java

@@ -4,7 +4,7 @@ import android.app.IntentService;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Process;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.Utils;
@@ -15,6 +15,8 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.Set;
 
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 /**
  * Handles setting up and generating the local repo used to swap apps, including
  * the {@code index.jar}, the symlinks to the shared APKs, etc.

app/src/full/java/org/fdroid/fdroid/nearby/SDCardScannerService.java

@@ -29,7 +29,7 @@ import android.os.Build;
 import android.os.Environment;
 import android.os.Process;
 import android.util.Log;
-import androidx.core.content.ContextCompat;
+
 import org.fdroid.fdroid.IndexUpdater;
 import org.fdroid.fdroid.IndexV1Updater;
 import org.fdroid.fdroid.Utils;
@@ -44,6 +44,8 @@ import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 
+import androidx.core.content.ContextCompat;
+
 /**
  * An {@link IntentService} subclass for scanning removable "external storage"
  * for F-Droid package repos, e.g. SD Cards. This is intended to support

app/src/full/java/org/fdroid/fdroid/nearby/SelectAppsView.java

@@ -4,7 +4,6 @@ import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
-import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
@@ -21,6 +20,10 @@ import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;
 
+import org.fdroid.fdroid.R;
+import org.fdroid.fdroid.data.InstalledAppProvider;
+import org.fdroid.fdroid.data.Schema.InstalledAppTable;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.content.ContextCompat;
@@ -29,10 +32,6 @@ import androidx.loader.app.LoaderManager;
 import androidx.loader.content.CursorLoader;
 import androidx.loader.content.Loader;
 
-import org.fdroid.fdroid.R;
-import org.fdroid.fdroid.data.InstalledAppProvider;
-import org.fdroid.fdroid.data.Schema.InstalledAppTable;
-
 public class SelectAppsView extends SwapView implements LoaderManager.LoaderCallbacks<Cursor> {
 
     public SelectAppsView(Context context) {
@@ -200,8 +199,6 @@ public class SelectAppsView extends SwapView implements LoaderManager.LoaderCall
                     }
                 });
             }
-
-            updateCheckedIndicatorView(view, listView.isItemChecked(listPosition));
         }
 
         public void updateCheckedIndicatorView(int position, boolean checked) {
@@ -210,24 +207,6 @@ public class SelectAppsView extends SwapView implements LoaderManager.LoaderCall
 
             if (position >= firstListItemPosition && position <= lastListItemPosition) {
                 final int childIndex = position - firstListItemPosition;
-                updateCheckedIndicatorView(listView.getChildAt(childIndex), checked);
-            }
-        }
-
-        private void updateCheckedIndicatorView(View view, boolean checked) {
-            ImageView imageView = (ImageView) view.findViewById(R.id.checked);
-            if (imageView != null) {
-                int resource;
-                int colour;
-                if (checked) {
-                    resource = R.drawable.ic_check_circle;
-                    colour = ContextCompat.getColor(getContext(), R.color.swap_bright_blue);
-                } else {
-                    resource = R.drawable.ic_add_circle_outline;
-                    colour = 0xFFD0D0D4;
-                }
-                imageView.setImageDrawable(ContextCompat.getDrawable(getContext(), resource));
-                imageView.setColorFilter(colour, PorterDuff.Mode.MULTIPLY);
             }
         }
     }

app/src/full/java/org/fdroid/fdroid/nearby/StartSwapView.java

@@ -20,11 +20,6 @@ import android.widget.ListView;
 import android.widget.ProgressBar;
 import android.widget.TextView;
 
-import androidx.annotation.Nullable;
-import androidx.appcompat.widget.SwitchCompat;
-import androidx.core.content.ContextCompat;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.Utils;
@@ -32,6 +27,10 @@ import org.fdroid.fdroid.nearby.peers.Peer;
 
 import java.util.ArrayList;
 
+import androidx.annotation.Nullable;
+import com.google.android.material.switchmaterial.SwitchMaterial;
+import androidx.core.content.ContextCompat;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import cc.mvdan.accesspoint.WifiApControl;
 
 @SuppressWarnings("LineLength")
@@ -80,7 +79,7 @@ public class StartSwapView extends SwapView {
     @Nullable /* Emulators typically don't have bluetooth adapters */
     private final BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
 
-    private SwitchCompat bluetoothSwitch;
+    private SwitchMaterial bluetoothSwitch;
     private TextView viewBluetoothId;
     private TextView textBluetoothVisible;
     private TextView viewWifiId;
@@ -176,7 +175,7 @@ public class StartSwapView extends SwapView {
 
             textBluetoothVisible = findViewById(R.id.bluetooth_visible);
 
-            bluetoothSwitch = (SwitchCompat) findViewById(R.id.switch_bluetooth);
+            bluetoothSwitch = (SwitchMaterial) findViewById(R.id.switch_bluetooth);
             bluetoothSwitch.setOnCheckedChangeListener(onBluetoothSwitchToggled);
             bluetoothSwitch.setChecked(SwapService.getBluetoothVisibleUserPreference());
             bluetoothSwitch.setEnabled(true);

app/src/full/java/org/fdroid/fdroid/nearby/SwapService.java

@@ -1,6 +1,5 @@
 package org.fdroid.fdroid.nearby;
 
-import android.annotation.SuppressLint;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.app.Service;
@@ -13,17 +12,17 @@ import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.net.Uri;
 import android.net.wifi.WifiManager;
-import android.os.AsyncTask;
 import android.os.IBinder;
 import android.text.TextUtils;
 import android.util.Log;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.ServiceCompat;
 import androidx.core.content.ContextCompat;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-import cc.mvdan.accesspoint.WifiApControl;
+
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.NotificationHelper;
 import org.fdroid.fdroid.Preferences;
@@ -36,7 +35,6 @@ import org.fdroid.fdroid.data.Schema;
 import org.fdroid.fdroid.nearby.peers.Peer;
 import org.fdroid.fdroid.net.Downloader;
 
-import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.net.HttpURLConnection;
@@ -47,6 +45,12 @@ import java.util.Set;
 import java.util.Timer;
 import java.util.TimerTask;
 
+import cc.mvdan.accesspoint.WifiApControl;
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.Completable;
+import io.reactivex.rxjava3.disposables.CompositeDisposable;
+import io.reactivex.rxjava3.schedulers.Schedulers;
+
 /**
  * Central service which manages all of the different moving parts of swap which are required
  * to enable p2p swapping of apps.
@@ -107,46 +111,6 @@ public class SwapService extends Service {
         UpdateService.updateRepoNow(this, peer.getRepoAddress());
     }
 
-    @SuppressLint("StaticFieldLeak")
-    private void askServerToSwapWithUs(final Repo repo) {
-        new AsyncTask<Void, Void, Void>() {
-            @Override
-            protected Void doInBackground(Void... args) {
-                String swapBackUri = Utils.getLocalRepoUri(FDroidApp.repo).toString();
-                HttpURLConnection conn = null;
-                try {
-                    URL url = new URL(repo.address.replace("/fdroid/repo", "/request-swap"));
-                    conn = (HttpURLConnection) url.openConnection();
-                    conn.setRequestMethod("POST");
-                    conn.setDoInput(true);
-                    conn.setDoOutput(true);
-
-                    OutputStream outputStream = conn.getOutputStream();
-                    OutputStreamWriter writer = new OutputStreamWriter(outputStream);
-                    writer.write("repo=" + swapBackUri);
-                    writer.flush();
-                    writer.close();
-                    outputStream.close();
-
-                    int responseCode = conn.getResponseCode();
-                    Utils.debugLog(TAG, "Asking server at " + repo.address + " to swap with us in return (by " +
-                            "POSTing to \"/request-swap\" with repo \"" + swapBackUri + "\"): " + responseCode);
-                } catch (IOException e) {
-                    Log.e(TAG, "Error while asking server to swap with us", e);
-                    Intent intent = new Intent(Downloader.ACTION_INTERRUPTED);
-                    intent.setData(Uri.parse(repo.address));
-                    intent.putExtra(Downloader.EXTRA_ERROR_MESSAGE, e.getLocalizedMessage());
-                    LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(intent);
-                } finally {
-                    if (conn != null) {
-                        conn.disconnect();
-                    }
-                }
-                return null;
-            }
-        }.execute();
-    }
-
     private Repo ensureRepoExists(@NonNull Peer peer) {
         // TODO: newRepoConfig.getParsedUri() will include a fingerprint, which may not match with
         // the repos address in the database. Not sure on best behaviour in this situation.
@@ -340,12 +304,15 @@ public class SwapService extends Service {
     @Nullable
     private Timer timer;
 
+    private final CompositeDisposable compositeDisposable = new CompositeDisposable();
+
     public class Binder extends android.os.Binder {
         public SwapService getService() {
             return SwapService.this;
         }
     }
 
+    @Override
     public void onCreate() {
         super.onCreate();
         startForeground(NOTIFICATION, createNotification());
@@ -395,6 +362,45 @@ public class SwapService extends Service {
         BonjourManager.setVisible(this, getWifiVisibleUserPreference() || getHotspotActivatedUserPreference());
     }
 
+    private void askServerToSwapWithUs(final Repo repo) {
+        compositeDisposable.add(
+                Completable.fromAction(() -> {
+                    String swapBackUri = Utils.getLocalRepoUri(FDroidApp.repo).toString();
+                    HttpURLConnection conn = null;
+                    try {
+                        URL url = new URL(repo.address.replace("/fdroid/repo", "/request-swap"));
+                        conn = (HttpURLConnection) url.openConnection();
+                        conn.setRequestMethod("POST");
+                        conn.setDoInput(true);
+                        conn.setDoOutput(true);
+
+                        try (OutputStream outputStream = conn.getOutputStream();
+                             OutputStreamWriter writer = new OutputStreamWriter(outputStream)) {
+                            writer.write("repo=" + swapBackUri);
+                            writer.flush();
+                        }
+
+                        int responseCode = conn.getResponseCode();
+                        Utils.debugLog(TAG, "Asking server at " + repo.address + " to swap with us in return (by " +
+                                "POSTing to \"/request-swap\" with repo \"" + swapBackUri + "\"): " + responseCode);
+                    } finally {
+                        if (conn != null) {
+                            conn.disconnect();
+                        }
+                    }
+                })
+                        .subscribeOn(Schedulers.io())
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .doOnError(e -> {
+                            Intent intent = new Intent(Downloader.ACTION_INTERRUPTED);
+                            intent.setData(Uri.parse(repo.address));
+                            intent.putExtra(Downloader.EXTRA_ERROR_MESSAGE, e.getLocalizedMessage());
+                            LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(intent);
+                        })
+                        .subscribe()
+        );
+    }
+
     /**
      * This is for setting things up for when the {@code SwapService} was
      * started by the user clicking on the initial start button. The things
@@ -418,6 +424,8 @@ public class SwapService extends Service {
 
     @Override
     public void onDestroy() {
+        compositeDisposable.dispose();
+
         Utils.debugLog(TAG, "Destroying service, will disable swapping if required, and unregister listeners.");
         Preferences.get().unregisterLocalRepoHttpsListeners(httpsEnabledListener);
         localBroadcastManager.unregisterReceiver(onWifiChange);

app/src/full/java/org/fdroid/fdroid/nearby/SwapSuccessView.java

@@ -1,7 +1,6 @@
 package org.fdroid.fdroid.nearby;
 
 import android.annotation.TargetApi;
-import androidx.appcompat.app.AppCompatActivity;
 import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -12,14 +11,6 @@ import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.core.content.ContextCompat;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.CursorLoader;
-import androidx.loader.content.Loader;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-import androidx.cursoradapter.widget.CursorAdapter;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -32,7 +23,9 @@ import android.widget.ListView;
 import android.widget.ProgressBar;
 import android.widget.TextView;
 import android.widget.Toast;
+
 import com.nostra13.universalimageloader.core.ImageLoader;
+
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.UpdateService;
 import org.fdroid.fdroid.Utils;
@@ -49,6 +42,16 @@ import org.fdroid.fdroid.net.DownloaderService;
 
 import java.util.List;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
+import androidx.cursoradapter.widget.CursorAdapter;
+import androidx.loader.app.LoaderManager;
+import androidx.loader.content.CursorLoader;
+import androidx.loader.content.Loader;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 /**
  * This is a view that shows a listing of all apps in the swap repo that this
  * just connected to.  The app listing and search should be replaced by

app/src/full/java/org/fdroid/fdroid/nearby/SwapView.java

@@ -6,12 +6,12 @@ import android.content.res.TypedArray;
 import android.util.AttributeSet;
 import android.widget.RelativeLayout;
 
+import org.fdroid.fdroid.R;
+
 import androidx.annotation.ColorInt;
 import androidx.annotation.LayoutRes;
 import androidx.core.content.ContextCompat;
 
-import org.fdroid.fdroid.R;
-
 /**
  * A {@link android.view.View} that registers to handle the swap events from
  * {@link SwapService}.

app/src/full/java/org/fdroid/fdroid/nearby/SwapWorkflowActivity.java

@@ -1,7 +1,6 @@
 package org.fdroid.fdroid.nearby;
 
 import android.annotation.TargetApi;
-import androidx.appcompat.app.AppCompatActivity;
 import android.bluetooth.BluetoothAdapter;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
@@ -42,11 +41,11 @@ import androidx.annotation.StringRes;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.SearchView;
-import androidx.appcompat.widget.SwitchCompat;
-import androidx.appcompat.widget.Toolbar;
 import androidx.core.content.ContextCompat;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 
+import com.google.android.material.appbar.MaterialToolbar;
+import com.google.android.material.switchmaterial.SwitchMaterial;
 import com.google.zxing.integration.android.IntentIntegrator;
 import com.google.zxing.integration.android.IntentResult;
 
@@ -66,7 +65,6 @@ import org.fdroid.fdroid.net.BluetoothDownloader;
 import org.fdroid.fdroid.net.Downloader;
 import org.fdroid.fdroid.net.HttpDownloader;
 import org.fdroid.fdroid.qr.CameraCharacteristicsChecker;
-import org.fdroid.fdroid.qr.QrGenAsyncTask;
 import org.fdroid.fdroid.views.main.MainActivity;
 
 import java.util.Date;
@@ -78,6 +76,7 @@ import java.util.Timer;
 import java.util.TimerTask;
 
 import cc.mvdan.accesspoint.WifiApControl;
+import io.reactivex.rxjava3.disposables.CompositeDisposable;
 
 import static org.fdroid.fdroid.views.main.MainActivity.ACTION_REQUEST_SWAP;
 
@@ -107,7 +106,7 @@ public class SwapWorkflowActivity extends AppCompatActivity {
     private static final int REQUEST_WRITE_SETTINGS_PERMISSION = 5;
     private static final int STEP_INTRO = 1;  // TODO remove this special case, only use layoutResIds
 
-    private Toolbar toolbar;
+    private MaterialToolbar toolbar;
     private SwapView currentView;
     private boolean hasPreparedLocalRepo;
     private boolean newIntent;
@@ -120,6 +119,8 @@ public class SwapWorkflowActivity extends AppCompatActivity {
     @LayoutRes
     private int currentSwapViewLayoutRes = STEP_INTRO;
 
+    private final CompositeDisposable compositeDisposable = new CompositeDisposable();
+
     public static void requestSwap(Context context, String repo) {
         requestSwap(context, Uri.parse(repo));
     }
@@ -201,7 +202,11 @@ public class SwapWorkflowActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-        ((FDroidApp) getApplication()).setSecureWindow(this);
+        FDroidApp fdroidApp = (FDroidApp) getApplication();
+        fdroidApp.setSecureWindow(this);
+
+        fdroidApp.applyPureBlackBackgroundInDarkTheme(this);
+
         super.onCreate(savedInstanceState);
 
         currentView = new SwapView(this); // dummy placeholder to avoid NullPointerExceptions;
@@ -214,10 +219,8 @@ public class SwapWorkflowActivity extends AppCompatActivity {
 
         setContentView(R.layout.swap_activity);
 
-        toolbar = (Toolbar) findViewById(R.id.toolbar);
+        toolbar = findViewById(R.id.toolbar);
-        toolbar.setTitleTextAppearance(getApplicationContext(), R.style.SwapTheme_Wizard_Text_Toolbar);
         setSupportActionBar(toolbar);
-        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
 
         container = (ViewGroup) findViewById(R.id.container);
 
@@ -235,6 +238,7 @@ public class SwapWorkflowActivity extends AppCompatActivity {
 
     @Override
     protected void onDestroy() {
+        compositeDisposable.dispose();
         localBroadcastManager.unregisterReceiver(downloaderInterruptedReceiver);
         unbindService(serviceConnection);
         super.onDestroy();
@@ -495,7 +499,6 @@ public class SwapWorkflowActivity extends AppCompatActivity {
         currentView.setLayoutResId(viewRes);
         currentSwapViewLayoutRes = viewRes;
 
-        toolbar.setBackgroundColor(currentView.getToolbarColour());
         toolbar.setTitle(currentView.getToolbarTitle());
         toolbar.setNavigationOnClickListener(new View.OnClickListener() {
             @Override
@@ -776,7 +779,7 @@ public class SwapWorkflowActivity extends AppCompatActivity {
     private final BroadcastReceiver bluetoothScanModeChanged = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            SwitchCompat bluetoothSwitch = container.findViewById(R.id.switch_bluetooth);
+            SwitchMaterial bluetoothSwitch = container.findViewById(R.id.switch_bluetooth);
             TextView textBluetoothVisible = container.findViewById(R.id.bluetooth_visible);
             if (bluetoothSwitch == null || textBluetoothVisible == null
                     || !BluetoothManager.ACTION_STATUS.equals(intent.getAction())) {
@@ -930,18 +933,23 @@ public class SwapWorkflowActivity extends AppCompatActivity {
         ImageView qrImage = container.findViewById(R.id.wifi_qr_code);
         if (qrUriString != null && qrImage != null) {
             Utils.debugLog(TAG, "Encoded swap URI in QR Code: " + qrUriString);
-            new QrGenAsyncTask(SwapWorkflowActivity.this, R.id.wifi_qr_code).execute(qrUriString);
 
-            // Replace all blacks with the background blue.
+            compositeDisposable.add(Utils.generateQrBitmap(this, qrUriString)
-            qrImage.setColorFilter(new LightingColorFilter(0xffffffff, ContextCompat.getColor(this,
+                    .subscribe(qrBitmap -> {
-                    R.color.swap_blue)));
+                        qrImage.setImageBitmap(qrBitmap);
 
-            final View qrWarningMessage = container.findViewById(R.id.warning_qr_scanner);
+                        // Replace all blacks with the background blue.
-            if (CameraCharacteristicsChecker.getInstance(this).hasAutofocus()) {
+                        qrImage.setColorFilter(new LightingColorFilter(0xffffffff,
-                qrWarningMessage.setVisibility(View.GONE);
+                                ContextCompat.getColor(this, R.color.swap_blue)));
-            } else {
+
-                qrWarningMessage.setVisibility(View.VISIBLE);
+                        final View qrWarningMessage = container.findViewById(R.id.warning_qr_scanner);
-            }
+                        if (CameraCharacteristicsChecker.getInstance(this).hasAutofocus()) {
+                            qrWarningMessage.setVisibility(View.GONE);
+                        } else {
+                            qrWarningMessage.setVisibility(View.VISIBLE);
+                        }
+                    })
+            );
         }
     }
 
@@ -988,7 +996,7 @@ public class SwapWorkflowActivity extends AppCompatActivity {
             }
         });
 
-        SwitchCompat wifiSwitch = findViewById(R.id.switch_wifi);
+        SwitchMaterial wifiSwitch = findViewById(R.id.switch_wifi);
         wifiSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
@@ -1112,7 +1120,7 @@ public class SwapWorkflowActivity extends AppCompatActivity {
     private final BroadcastReceiver bluetoothStatus = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            SwitchCompat bluetoothSwitch = container.findViewById(R.id.switch_bluetooth);
+            SwitchMaterial bluetoothSwitch = container.findViewById(R.id.switch_bluetooth);
             TextView textBluetoothVisible = container.findViewById(R.id.bluetooth_visible);
             TextView textDeviceIdBluetooth = container.findViewById(R.id.device_id_bluetooth);
             TextView peopleNearbyText = container.findViewById(R.id.text_people_nearby);

app/src/full/java/org/fdroid/fdroid/nearby/TreeUriScannerIntentService.java

@@ -29,7 +29,7 @@ import android.os.Build;
 import android.os.Process;
 import android.util.Log;
 import android.widget.Toast;
-import androidx.documentfile.provider.DocumentFile;
+
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
 import org.fdroid.fdroid.AddRepoIntentService;
@@ -49,6 +49,8 @@ import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.jar.JarInputStream;
 
+import androidx.documentfile.provider.DocumentFile;
+
 /**
  * An {@link IntentService} subclass for handling asynchronous scanning of a
  * removable storage device like an SD Card or USB OTG thumb drive using the

app/src/full/java/org/fdroid/fdroid/nearby/TreeUriUtils.java

@@ -8,13 +8,13 @@ import android.os.Build;
 import android.os.storage.StorageManager;
 import android.provider.DocumentsContract;
 
-import androidx.annotation.Nullable;
-import androidx.core.content.ContextCompat;
-
 import java.io.File;
 import java.lang.reflect.Array;
 import java.lang.reflect.Method;
 
+import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
+
 
 /**
  * @see <a href="https://stackoverflow.com/a/36162691">Android 5.0 DocumentFile from tree URI</a>

app/src/full/java/org/fdroid/fdroid/nearby/UsbDeviceAttachedReceiver.java

@@ -31,9 +31,11 @@ import android.os.Build;
 import android.os.Handler;
 import android.text.TextUtils;
 import android.util.Log;
-import androidx.annotation.RequiresApi;
+
 import org.fdroid.fdroid.views.main.NearbyViewBinder;
 
+import androidx.annotation.RequiresApi;
+
 
 /**
  * This is just a shim to receive {@link UsbManager#ACTION_USB_ACCESSORY_ATTACHED}

app/src/full/java/org/fdroid/fdroid/nearby/UsbDeviceDetachedReceiver.java

@@ -29,11 +29,13 @@ import android.net.Uri;
 import android.os.Build;
 import android.text.TextUtils;
 import android.util.Log;
-import androidx.annotation.RequiresApi;
+
 import org.fdroid.fdroid.views.main.NearbyViewBinder;
 
 import java.util.HashMap;
 
+import androidx.annotation.RequiresApi;
+
 /**
  * This is just a shim to receive {@link UsbManager#ACTION_USB_DEVICE_DETACHED}
  * events.

app/src/full/java/org/fdroid/fdroid/nearby/UsbDeviceMediaMountedReceiver.java

@@ -4,6 +4,7 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Environment;
+
 import org.fdroid.fdroid.views.main.NearbyViewBinder;
 
 public class UsbDeviceMediaMountedReceiver extends BroadcastReceiver {

app/src/full/java/org/fdroid/fdroid/nearby/WifiStateChangeReceiver.java

@@ -4,6 +4,7 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.net.wifi.WifiManager;
+
 import org.fdroid.fdroid.Utils;
 
 public class WifiStateChangeReceiver extends BroadcastReceiver {

app/src/full/java/org/fdroid/fdroid/nearby/WifiStateChangeService.java

@@ -10,12 +10,13 @@ import android.net.wifi.WifiConfiguration;
 import android.net.wifi.WifiInfo;
 import android.net.wifi.WifiManager;
 import android.os.Build;
+import android.text.TextUtils;
+import android.util.Log;
+
 import androidx.annotation.Nullable;
 import androidx.core.content.ContextCompat;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-import android.text.TextUtils;
+
-import android.util.Log;
-import cc.mvdan.accesspoint.WifiApControl;
 import org.apache.commons.net.util.SubnetUtils;
 import org.fdroid.fdroid.BuildConfig;
 import org.fdroid.fdroid.FDroidApp;
@@ -34,6 +35,9 @@ import java.security.cert.Certificate;
 import java.util.Enumeration;
 import java.util.Locale;
 
+import cc.mvdan.accesspoint.WifiApControl;
+import io.reactivex.rxjava3.disposables.CompositeDisposable;
+
 /**
  * Handle state changes to the device's wifi, storing the required bits.
  * The {@link Intent} that starts it either has no extras included,
@@ -68,6 +72,8 @@ public class WifiStateChangeService extends IntentService {
     private static int previousWifiState = Integer.MIN_VALUE;
     private static int wifiState;
 
+    private final CompositeDisposable compositeDisposable = new CompositeDisposable();
+
     public WifiStateChangeService() {
         super("WifiStateChangeService");
     }
@@ -80,6 +86,12 @@ public class WifiStateChangeService extends IntentService {
         context.startService(intent);
     }
 
+    @Override
+    public void onDestroy() {
+        compositeDisposable.dispose();
+        super.onDestroy();
+    }
+
     @Override
     protected void onHandleIntent(Intent intent) {
         android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_LOWEST);
@@ -107,7 +119,7 @@ public class WifiStateChangeService extends IntentService {
             }
 
             if (Build.VERSION.SDK_INT < 21 && wifiState == WifiManager.WIFI_STATE_ENABLED) {
-                UpdateService.scheduleIfStillOnWifi(this);
+                compositeDisposable.add(UpdateService.scheduleIfStillOnWifi(this).subscribe());
             }
         }
     }

app/src/full/java/org/fdroid/fdroid/nearby/peers/BluetoothPeer.java

@@ -5,10 +5,10 @@ import android.bluetooth.BluetoothDevice;
 import android.os.Parcel;
 import android.text.TextUtils;
 
-import androidx.annotation.Nullable;
-
 import org.fdroid.fdroid.R;
 
+import androidx.annotation.Nullable;
+
 public class BluetoothPeer implements Peer {
 
     private static final String BLUETOOTH_NAME_TAG = "FDroid:";

app/src/full/java/org/fdroid/fdroid/nearby/peers/BonjourPeer.java

@@ -2,13 +2,15 @@ package org.fdroid.fdroid.nearby.peers;
 
 import android.net.Uri;
 import android.os.Parcel;
-import androidx.annotation.Nullable;
 import android.text.TextUtils;
+
 import org.fdroid.fdroid.FDroidApp;
 
 import javax.jmdns.ServiceInfo;
 import javax.jmdns.impl.FDroidServiceInfo;
 
+import androidx.annotation.Nullable;
+
 public class BonjourPeer extends WifiPeer {
     private static final String TAG = "BonjourPeer";
 

app/src/full/java/org/fdroid/fdroid/nearby/peers/Peer.java

@@ -1,6 +1,7 @@
 package org.fdroid.fdroid.nearby.peers;
 
 import android.os.Parcelable;
+
 import androidx.annotation.DrawableRes;
 
 /**

app/src/full/java/org/fdroid/fdroid/panic/CalculatorActivity.java

@@ -1,17 +1,21 @@
 package org.fdroid.fdroid.panic;
 
 import android.os.Bundle;
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.appcompat.widget.Toolbar;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;
+
+import com.google.android.material.appbar.MaterialToolbar;
+
+import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.R;
 
 import java.util.regex.Pattern;
 
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
 /**
  * A very hacky calculator which is barely functional.
  * It is just meant to pass a very casual inspection.
@@ -35,10 +39,13 @@ public class CalculatorActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
+        FDroidApp fdroidApp = (FDroidApp) getApplication();
+        fdroidApp.applyPureBlackBackgroundInDarkTheme(this);
+
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_calculator);
 
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        MaterialToolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
         textView = (TextView) findViewById(R.id.textView);

app/src/full/java/org/fdroid/fdroid/panic/DestructiveCheckBoxPreference.java

@@ -3,13 +3,13 @@ package org.fdroid.fdroid.panic;
 import android.content.Context;
 import android.util.AttributeSet;
 
+import org.fdroid.fdroid.FDroidApp;
+import org.fdroid.fdroid.R;
+
 import androidx.core.content.ContextCompat;
 import androidx.preference.CheckBoxPreference;
 import androidx.preference.PreferenceViewHolder;
 
-import org.fdroid.fdroid.FDroidApp;
-import org.fdroid.fdroid.R;
-
 public class DestructiveCheckBoxPreference extends CheckBoxPreference {
     public DestructiveCheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);

app/src/full/java/org/fdroid/fdroid/panic/DestructivePreference.java

@@ -3,13 +3,13 @@ package org.fdroid.fdroid.panic;
 import android.content.Context;
 import android.util.AttributeSet;
 
+import org.fdroid.fdroid.FDroidApp;
+import org.fdroid.fdroid.R;
+
 import androidx.core.content.ContextCompat;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceViewHolder;
 
-import org.fdroid.fdroid.FDroidApp;
-import org.fdroid.fdroid.R;
-
 public class DestructivePreference extends Preference {
     public DestructivePreference(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);

app/src/full/java/org/fdroid/fdroid/panic/ExitActivity.java

@@ -3,6 +3,7 @@ package org.fdroid.fdroid.panic;
 import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
+
 import androidx.appcompat.app.AppCompatActivity;
 
 public class ExitActivity extends AppCompatActivity {

app/src/full/java/org/fdroid/fdroid/panic/HidingManager.java

@@ -7,12 +7,14 @@ import android.content.Intent;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ServiceInfo;
-import androidx.core.app.NotificationManagerCompat;
+
-import androidx.appcompat.app.AlertDialog;
 import org.fdroid.fdroid.BuildConfig;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.views.main.MainActivity;
 
+import androidx.appcompat.app.AlertDialog;
+import androidx.core.app.NotificationManagerCompat;
+
 /**
  * This class is encapsulating all methods related to hiding the app from the launcher
  * and restoring it.

app/src/full/java/org/fdroid/fdroid/panic/PanicPreferencesActivity.java

@@ -1,37 +1,32 @@
 package org.fdroid.fdroid.panic;
 
 import android.os.Bundle;
-import androidx.appcompat.app.ActionBar;
+import android.view.View;
-import androidx.appcompat.app.AppCompatActivity;
+
-import androidx.appcompat.widget.Toolbar;
+import com.google.android.material.appbar.MaterialToolbar;
-import android.view.MenuItem;
+
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.R;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public class PanicPreferencesActivity extends AppCompatActivity {
 
     @Override
     public void onCreate(Bundle bundle) {
-        ((FDroidApp) getApplication()).applyTheme(this);
+        FDroidApp fdroidApp = (FDroidApp) getApplication();
+        fdroidApp.applyPureBlackBackgroundInDarkTheme(this);
+
         super.onCreate(bundle);
         setContentView(R.layout.activity_panic_settings);
 
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        MaterialToolbar toolbar = findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
+        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
-        ActionBar ab = getSupportActionBar();
+            @Override
-        if (ab != null) {
+            public void onClick(View view) {
-            ab.setDisplayShowHomeEnabled(true);
+                // Handle navigation icon press
-            ab.setDisplayHomeAsUpEnabled(true);
+                onBackPressed();
-        }
+            }
+        });
     }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        if (item.getItemId() == android.R.id.home) {
-            onBackPressed();
-            return true;
-        }
-        return super.onOptionsItemSelected(item);
-    }
-
 }

app/src/full/java/org/fdroid/fdroid/panic/PanicPreferencesFragment.java

@@ -1,6 +1,5 @@
 package org.fdroid.fdroid.panic;
 
-import androidx.appcompat.app.AppCompatActivity;
 import android.content.ComponentName;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -16,16 +15,6 @@ import android.os.Bundle;
 import android.text.TextUtils;
 import android.util.TypedValue;
 
-import androidx.annotation.ColorInt;
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AlertDialog;
-import androidx.core.content.ContextCompat;
-import androidx.preference.CheckBoxPreference;
-import androidx.preference.ListPreference;
-import androidx.preference.Preference;
-import androidx.preference.PreferenceCategory;
-import androidx.preference.PreferenceFragmentCompat;
-
 import org.fdroid.fdroid.Preferences;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.installer.PrivilegedInstaller;
@@ -33,6 +22,16 @@ import org.fdroid.fdroid.installer.PrivilegedInstaller;
 import java.util.ArrayList;
 import java.util.Set;
 
+import androidx.annotation.ColorInt;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
+import androidx.preference.CheckBoxPreference;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceCategory;
+import androidx.preference.PreferenceFragmentCompat;
 import info.guardianproject.panic.Panic;
 import info.guardianproject.panic.PanicResponder;
 

app/src/full/java/org/fdroid/fdroid/panic/PanicResponderActivity.java

@@ -1,17 +1,13 @@
 package org.fdroid.fdroid.panic;
 
-import androidx.appcompat.app.AppCompatActivity;
 import android.content.BroadcastReceiver;
 import android.content.ContentValues;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
-import info.guardianproject.panic.Panic;
+
-import info.guardianproject.panic.PanicResponder;
 import org.fdroid.fdroid.Preferences;
 import org.fdroid.fdroid.data.Apk;
 import org.fdroid.fdroid.data.DBHelper;
@@ -31,6 +27,11 @@ import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+import info.guardianproject.panic.Panic;
+import info.guardianproject.panic.PanicResponder;
+
 /**
  * This {@link AppCompatActivity} is purely to run events in response to a panic trigger.
  * It needs to be an {@code AppCompatActivity} rather than a {@link android.app.Service}

app/src/full/java/org/fdroid/fdroid/panic/SelectInstalledAppListAdapter.java

@@ -1,9 +1,8 @@
 package org.fdroid.fdroid.panic;
 
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.annotation.NonNull;
 import android.view.View;
 import android.view.ViewGroup;
+
 import org.fdroid.fdroid.Preferences;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.views.installed.InstalledAppListAdapter;
@@ -11,6 +10,9 @@ import org.fdroid.fdroid.views.installed.InstalledAppListItemController;
 
 import java.util.Set;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+
 public class SelectInstalledAppListAdapter extends InstalledAppListAdapter {
     private final Set<String> selectedApps;
 

app/src/full/java/org/fdroid/fdroid/panic/SelectInstalledAppListItemController.java

@@ -1,9 +1,7 @@
 package org.fdroid.fdroid.panic;
 
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import android.view.View;
+
 import org.fdroid.fdroid.AppUpdateStatusManager;
 import org.fdroid.fdroid.data.App;
 import org.fdroid.fdroid.views.apps.AppListItemState;
@@ -11,6 +9,10 @@ import org.fdroid.fdroid.views.installed.InstalledAppListItemController;
 
 import java.util.Set;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
 /**
  * Shows the currently installed apps as a selectable list.
  */

app/src/full/java/org/fdroid/fdroid/panic/SelectInstalledAppsActivity.java

@@ -27,15 +27,7 @@ import android.view.MenuItem;
 import android.view.View;
 import android.widget.TextView;
 
-import androidx.annotation.NonNull;
+import com.google.android.material.appbar.MaterialToolbar;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.appcompat.widget.Toolbar;
-import androidx.core.content.ContextCompat;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.CursorLoader;
-import androidx.loader.content.Loader;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
 
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.Preferences;
@@ -43,6 +35,14 @@ import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.data.InstalledAppProvider;
 import org.fdroid.fdroid.views.installed.InstalledAppListAdapter;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.loader.app.LoaderManager;
+import androidx.loader.content.CursorLoader;
+import androidx.loader.content.Loader;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
 public class SelectInstalledAppsActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor> {
 
     private InstalledAppListAdapter adapter;
@@ -54,13 +54,14 @@ public class SelectInstalledAppsActivity extends AppCompatActivity implements Lo
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        FDroidApp fdroidApp = (FDroidApp) getApplication();
+        fdroidApp.applyPureBlackBackgroundInDarkTheme(this);
 
-        ((FDroidApp) getApplication()).applyTheme(this);
         super.onCreate(savedInstanceState);
 
         setContentView(R.layout.installed_apps_layout);
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
+        MaterialToolbar toolbar = findViewById(R.id.toolbar);
         toolbar.setTitle(getString(R.string.panic_add_apps_to_uninstall));
         setSupportActionBar(toolbar);
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);

app/src/full/java/org/fdroid/fdroid/views/main/CategoriesViewBinder.java

@@ -6,15 +6,9 @@ import android.os.Bundle;
 import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.TextView;
-import androidx.annotation.NonNull;
+
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.CursorLoader;
-import androidx.loader.content.Loader;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
 import org.fdroid.fdroid.Preferences;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.UpdateService;
@@ -31,6 +25,15 @@ import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.loader.app.LoaderManager;
+import androidx.loader.content.CursorLoader;
+import androidx.loader.content.Loader;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+
 /**
  * Responsible for ensuring that the categories view is inflated and then populated correctly.
  * Will start a loader to get the list of categories from the database and populate a recycler

app/src/full/java/org/fdroid/fdroid/views/main/MainViewController.java

@@ -2,15 +2,15 @@ package org.fdroid.fdroid.views.main;
 
 import android.widget.FrameLayout;
 
+import org.fdroid.fdroid.R;
+import org.fdroid.fdroid.views.PreferencesFragment;
+import org.fdroid.fdroid.views.updates.UpdatesViewBinder;
+
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.RecyclerView;
 
-import org.fdroid.fdroid.R;
-import org.fdroid.fdroid.views.PreferencesFragment;
-import org.fdroid.fdroid.views.updates.UpdatesViewBinder;
-
 /**
  * Decides which view on the main screen to attach to a given {@link FrameLayout}. This class
  * doesn't know which view it will be rendering at the time it is constructed. Rather, at some

app/src/full/java/org/fdroid/fdroid/views/main/NearbyViewBinder.java

@@ -1,7 +1,6 @@
 package org.fdroid.fdroid.views.main;
 
 import android.Manifest;
-import androidx.appcompat.app.AppCompatActivity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.UriPermission;
@@ -22,9 +21,7 @@ import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
-import androidx.annotation.RequiresApi;
+
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
 import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.nearby.SDCardScannerService;
@@ -34,6 +31,11 @@ import org.fdroid.fdroid.nearby.TreeUriScannerIntentService;
 import java.io.File;
 import java.util.List;
 
+import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
 /**
  * A splash screen encouraging people to start the swap process. The swap
  * process is quite heavy duty in that it fires up Bluetooth and/or WiFi

app/src/full/res/drawable/ic_check_circle.xml

@@ -1,12 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24"
-    android:tint="?attr/colorControlNormal"
-    tools:ignore="VectorRaster">
-  <path
-      android:fillColor="#FFFFFF"
-      android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM9.29,16.29L5.7,12.7c-0.39,-0.39 -0.39,-1.02 0,-1.41 0.39,-0.39 1.02,-0.39 1.41,0L10,14.17l6.88,-6.88c0.39,-0.39 1.02,-0.39 1.41,0 0.39,0.39 0.39,1.02 0,1.41l-7.59,7.59c-0.38,0.39 -1.02,0.39 -1.41,0z"/>
-</vector>

app/src/full/res/drawable/ic_nearby.xml

@@ -1,19 +1,33 @@
-<vector android:height="24dp" android:viewportHeight="48.0"
+<vector android:height="24dp"
+    android:viewportHeight="48.0"
     android:tint="?attr/colorControlNormal"
-    android:viewportWidth="48.0" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    android:viewportWidth="48.0"
-    <path android:fillColor="#ffffff"
+    android:width="24dp"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <path
+        android:fillColor="#ffffff"
         android:pathData="m22.75,12.78c-6.19,0 -11.22,5.03 -11.22,11.22 0,0.55 0.05,1.08 0.13,1.61 1.71,0.27 3.29,0.93 4.64,1.91 -0.57,-1.05 -0.9,-2.24 -0.9,-3.52 0,-4.05 3.3,-7.35 7.35,-7.35 4.05,0 7.35,3.3 7.35,7.35 0,4.05 -3.3,7.35 -7.35,7.35 -1.38,0 -2.66,-0.39 -3.77,-1.05 0.92,1.39 1.53,2.99 1.73,4.73 0.66,0.12 1.34,0.2 2.04,0.2 6.19,0 11.22,-5.03 11.22,-11.22 0,-6.19 -5.03,-11.22 -11.22,-11.22"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
+        android:strokeColor="#00000000"
-    <path android:fillColor="#ffffff"
+        android:strokeWidth="1" />
+    <path
+        android:fillColor="#ffffff"
         android:pathData="m42.28,25.4c-0.36,0 -0.71,-0.02 -1.06,-0.06 -0.69,9.6 -8.71,17.2 -18.48,17.2 -1.28,0 -2.53,-0.13 -3.74,-0.38 -0.83,1.26 -1.91,2.33 -3.18,3.15 2.18,0.71 4.5,1.1 6.91,1.1 12.03,0 21.87,-9.54 22.38,-21.45 -0.9,0.29 -1.85,0.44 -2.84,0.44"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
+        android:strokeColor="#00000000"
-    <path android:fillColor="#ffffff"
+        android:strokeWidth="1" />
+    <path
+        android:fillColor="#ffffff"
         android:pathData="m42.28,10.64c-2.96,0 -5.36,2.41 -5.36,5.36 0,2.96 2.41,5.36 5.36,5.36 2.96,0 5.36,-2.41 5.36,-5.36 0,-2.96 -2.41,-5.36 -5.36,-5.36"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
+        android:strokeColor="#00000000"
-    <path android:fillColor="#ffffff"
+        android:strokeWidth="1" />
+    <path
+        android:fillColor="#ffffff"
         android:pathData="m10,29.5c-3.72,0 -6.75,3.03 -6.75,6.75 0,3.72 3.03,6.75 6.75,6.75 3.72,0 6.75,-3.03 6.75,-6.75 0,-3.72 -3.03,-6.75 -6.75,-6.75"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
+        android:strokeColor="#00000000"
-    <path android:fillAlpha="1" android:fillColor="#ffffff"
+        android:strokeWidth="1" />
+    <path
+        android:fillAlpha="1"
+        android:fillColor="#ffffff"
         android:pathData="m4.47,27.01c-0.16,-0.98 -0.25,-1.98 -0.25,-3.01 0,-10.22 8.31,-18.53 18.53,-18.53 4.68,0 8.97,1.75 12.23,4.63C35.81,9.08 36.85,8.24 38.03,7.64 34.02,3.9 28.65,1.6 22.75,1.6 10.4,1.6 0.35,11.65 0.35,24c0,2.1 0.3,4.13 0.84,6.05 0.87,-1.23 1.99,-2.27 3.28,-3.04"
-        android:strokeColor="#00000000" android:strokeWidth="1"/>
+        android:strokeColor="#00000000"
+        android:strokeWidth="1" />
 </vector>

app/src/full/res/layout-sw480dp/start_swap_header.xml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
         android:id="@+id/header"
         android:layout_width="match_parent"
         android:layout_height="130dp"
@@ -12,7 +13,7 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:scaleType="centerCrop"
-            android:src="@drawable/swap_start_header"/>
+            app:srcCompat="@drawable/swap_start_header"/>
 
     <TextView
             android:layout_width="wrap_content"

app/src/full/res/layout-v11/select_local_apps_list_item.xml

@@ -1,78 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2010 The Android Open Source Project
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-          http://www.apache.org/licenses/LICENSE-2.0
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:minHeight="?android:attr/listPreferredItemHeight"
-    android:paddingBottom="2dip"
-    android:paddingTop="2dip">
-
-    <ImageView
-        android:id="@android:id/icon"
-        android:layout_width="48dip"
-        android:layout_height="48dip"
-        android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-        android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
-        android:layout_marginTop="6dip"
-        android:layout_alignParentStart="true"
-        android:layout_alignParentLeft="true"
-        tools:src="@drawable/ic_launcher"
-        tools:ignore="ContentDescription" />
-
-    <!-- Suppress InconsistentLayout because the lower API levels use a checkbox rather than this -->
-    <ImageView
-        android:id="@+id/checked"
-        android:layout_width="32dip"
-        android:layout_height="32dip"
-        android:layout_marginRight="?attr/listPreferredItemPaddingLeft"
-        android:layout_marginEnd="?android:attr/listPreferredItemPaddingStart"
-        android:layout_alignParentRight="true"
-        android:layout_alignParentEnd="true"
-        android:layout_centerVertical="true"
-        tools:suppress="InconsistentLayout"
-        android:src="@drawable/ic_add_circle_outline" />
-
-    <TwoLineListItem
-        android:layout_toRightOf="@android:id/icon"
-        android:layout_toEndOf="@android:id/icon"
-        android:layout_toLeftOf="@id/checked"
-        android:layout_toStartOf="@id/checked"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:mode="twoLine" >
-
-        <TextView
-            android:id="@+id/application_label"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
-            android:layout_marginTop="6dip"
-            android:textAppearance="?android:attr/textAppearanceMedium"
-            tools:text="F-Droid" />
-
-        <TextView
-            android:id="@+id/package_name"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_alignStart="@+id/application_label"
-            android:layout_alignLeft="@+id/application_label"
-            android:layout_below="@+id/application_label"
-            android:textAppearance="?android:attr/textAppearanceSmall"
-            tools:text="Application Manager" />
-    </TwoLineListItem>
-
-</RelativeLayout>

app/src/full/res/layout-v17/select_local_apps_list_item.xml

@@ -1,70 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2010 The Android Open Source Project
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-          http://www.apache.org/licenses/LICENSE-2.0
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:minHeight="?android:attr/listPreferredItemHeight"
-    android:paddingBottom="2dip"
-    android:paddingTop="2dip">
-
-    <ImageView
-        android:id="@android:id/icon"
-        android:layout_width="48dip"
-        android:layout_height="48dip"
-        android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
-        android:layout_marginTop="6dip"
-        android:layout_alignParentStart="true"
-        tools:src="@drawable/ic_launcher"
-        tools:ignore="ContentDescription" />
-
-    <!-- Suppress InconsistentLayout because the lower API levels use a checkbox rather than this -->
-    <ImageView
-        android:id="@+id/checked"
-        android:layout_width="32dip"
-        android:layout_height="32dip"
-        android:layout_marginEnd="?android:attr/listPreferredItemPaddingStart"
-        android:layout_alignParentEnd="true"
-        android:layout_centerVertical="true"
-        tools:suppress="InconsistentLayout"
-        android:src="@drawable/ic_add_circle_outline" />
-
-    <TwoLineListItem
-        android:layout_toEndOf="@android:id/icon"
-        android:layout_toStartOf="@id/checked"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:mode="twoLine" >
-
-        <TextView
-            android:id="@+id/application_label"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
-            android:layout_marginTop="6dip"
-            android:textAppearance="?android:attr/textAppearanceMedium"
-            tools:text="F-Droid" />
-
-        <TextView
-            android:id="@+id/package_name"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_alignStart="@+id/application_label"
-            android:layout_below="@+id/application_label"
-            android:textAppearance="?android:attr/textAppearanceSmall"
-            tools:text="Application Manager" />
-    </TwoLineListItem>
-
-</RelativeLayout>

app/src/full/res/layout/activity_calculator.xml

@@ -1,291 +1,302 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
+        xmlns:tools="http://schemas.android.com/tools"
-    android:layout_height="match_parent"
-    tools:context=".panic.CalculatorActivity">
-
-    <androidx.appcompat.widget.Toolbar
-        android:id="@+id/toolbar"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
-        android:background="?attr/colorPrimary"
+        tools:context=".panic.CalculatorActivity"
-        app:layout_constraintEnd_toEndOf="parent"
+        android:fitsSystemWindows="true">
-        app:layout_constraintStart_toStartOf="parent"
+
-        app:layout_constraintTop_toTopOf="parent"
+    <com.google.android.material.appbar.AppBarLayout
-        app:theme="?attr/actionBarTheme" />
+            android:id="@+id/topAppBarLayout"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:fitsSystemWindows="true"
+            app:liftOnScroll="true"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent">
+
+        <com.google.android.material.appbar.MaterialToolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:navigationIcon="@drawable/ic_back"
+                style="@style/Widget.MaterialComponents.Toolbar.PrimarySurface" />
+
+    </com.google.android.material.appbar.AppBarLayout>
 
     <TextView
-        android:id="@+id/textView"
+            android:id="@+id/textView"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="0dp"
+            android:layout_height="0dp"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginEnd="8dp"
+            android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:layout_marginTop="8dp"
+            android:layout_marginTop="8dp"
-        android:gravity="bottom|end"
+            android:gravity="bottom|end"
-        android:padding="5dp"
+            android:padding="5dp"
-        android:textAlignment="textEnd"
+            android:textAlignment="textEnd"
-        android:textSize="22sp"
+            android:textSize="22sp"
-        android:typeface="monospace"
+            android:typeface="monospace"
-        app:layout_constraintBottom_toTopOf="@+id/ce"
+            app:layout_constraintBottom_toTopOf="@+id/ce"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/toolbar"
+            app:layout_constraintTop_toBottomOf="@+id/topAppBarLayout"
-        tools:text="1337+42" />
+            tools:text="1337+42" />
 
     <Button
-        android:id="@+id/times"
+            android:id="@+id/times"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="op"
+            android:onClick="op"
-        android:text="×"
+            android:text="×"
-        app:layout_constraintBottom_toTopOf="@+id/seven"
+            app:layout_constraintBottom_toTopOf="@+id/seven"
-        app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/divided"
+            android:id="@+id/divided"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="op"
+            android:onClick="op"
-        android:text="÷"
+            android:text="÷"
-        app:layout_constraintBottom_toTopOf="@+id/eight"
+            app:layout_constraintBottom_toTopOf="@+id/eight"
-        app:layout_constraintStart_toEndOf="@+id/times"
+            app:layout_constraintStart_toEndOf="@+id/times"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/c"
+            android:id="@+id/c"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="c"
+            android:onClick="c"
-        android:text="C"
+            android:text="C"
-        app:layout_constraintBottom_toTopOf="@+id/nine"
+            app:layout_constraintBottom_toTopOf="@+id/nine"
-        app:layout_constraintStart_toEndOf="@+id/divided"
+            app:layout_constraintStart_toEndOf="@+id/divided"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/seven"
+            android:id="@+id/seven"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="7"
+            android:text="7"
-        app:layout_constraintBottom_toTopOf="@+id/four"
+            app:layout_constraintBottom_toTopOf="@+id/four"
-        app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/eight"
+            android:id="@+id/eight"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="8"
+            android:text="8"
-        app:layout_constraintBottom_toTopOf="@+id/five"
+            app:layout_constraintBottom_toTopOf="@+id/five"
-        app:layout_constraintStart_toEndOf="@+id/seven"
+            app:layout_constraintStart_toEndOf="@+id/seven"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/nine"
+            android:id="@+id/nine"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="9"
+            android:text="9"
-        app:layout_constraintBottom_toTopOf="@+id/six"
+            app:layout_constraintBottom_toTopOf="@+id/six"
-        app:layout_constraintStart_toEndOf="@+id/eight"
+            app:layout_constraintStart_toEndOf="@+id/eight"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/ce"
+            android:id="@+id/ce"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginEnd="8dp"
+            android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="ce"
+            android:onClick="ce"
-        android:text="CE"
+            android:text="CE"
-        app:layout_constraintBottom_toTopOf="@+id/plus"
+            app:layout_constraintBottom_toTopOf="@+id/plus"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/nine"
+            app:layout_constraintStart_toEndOf="@+id/nine"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/four"
+            android:id="@+id/four"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="4"
+            android:text="4"
-        app:layout_constraintBottom_toTopOf="@+id/one"
+            app:layout_constraintBottom_toTopOf="@+id/one"
-        app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/five"
+            android:id="@+id/five"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="5"
+            android:text="5"
-        app:layout_constraintBottom_toTopOf="@+id/two"
+            app:layout_constraintBottom_toTopOf="@+id/two"
-        app:layout_constraintStart_toEndOf="@+id/four"
+            app:layout_constraintStart_toEndOf="@+id/four"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/six"
+            android:id="@+id/six"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="6"
+            android:text="6"
-        app:layout_constraintBottom_toTopOf="@+id/three"
+            app:layout_constraintBottom_toTopOf="@+id/three"
-        app:layout_constraintStart_toEndOf="@+id/five"
+            app:layout_constraintStart_toEndOf="@+id/five"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/plus"
+            android:id="@+id/plus"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginEnd="8dp"
+            android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="op"
+            android:onClick="op"
-        android:text="+"
+            android:text="+"
-        app:layout_constraintBottom_toTopOf="@+id/minus"
+            app:layout_constraintBottom_toTopOf="@+id/minus"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/six"
+            app:layout_constraintStart_toEndOf="@+id/six"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/minus"
+            android:id="@+id/minus"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginEnd="8dp"
+            android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="op"
+            android:onClick="op"
-        android:text="-"
+            android:text="-"
-        app:layout_constraintBottom_toTopOf="@+id/equals"
+            app:layout_constraintBottom_toTopOf="@+id/equals"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/three"
+            app:layout_constraintStart_toEndOf="@+id/three"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/one"
+            android:id="@+id/one"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="1"
+            android:text="1"
-        app:layout_constraintBottom_toTopOf="@+id/zero"
+            app:layout_constraintBottom_toTopOf="@+id/zero"
-        app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/two"
+            android:id="@+id/two"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="2"
+            android:text="2"
-        app:layout_constraintBottom_toTopOf="@+id/comma"
+            app:layout_constraintBottom_toTopOf="@+id/comma"
-        app:layout_constraintStart_toEndOf="@+id/one"
+            app:layout_constraintStart_toEndOf="@+id/one"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/three"
+            android:id="@+id/three"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="3"
+            android:text="3"
-        app:layout_constraintBottom_toTopOf="@+id/percent"
+            app:layout_constraintBottom_toTopOf="@+id/percent"
-        app:layout_constraintStart_toEndOf="@+id/two"
+            app:layout_constraintStart_toEndOf="@+id/two"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/zero"
+            android:id="@+id/zero"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="0"
+            android:text="0"
-        app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/comma"
+            android:id="@+id/comma"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="number"
+            android:onClick="number"
-        android:text="."
+            android:text="."
-        app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/zero"
+            app:layout_constraintStart_toEndOf="@+id/zero"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/percent"
+            android:id="@+id/percent"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginLeft="8dp"
+            android:layout_marginLeft="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="op"
+            android:onClick="op"
-        android:text="%"
+            android:text="%"
-        app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/comma"
+            app:layout_constraintStart_toEndOf="@+id/comma"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
     <Button
-        android:id="@+id/equals"
+            android:id="@+id/equals"
-        android:layout_width="0dp"
+            android:layout_width="0dp"
-        android:layout_height="0dp"
+            android:layout_height="0dp"
-        android:layout_marginBottom="8dp"
+            android:layout_marginBottom="8dp"
-        android:layout_marginEnd="8dp"
+            android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
+            android:layout_marginStart="8dp"
-        android:onClick="op"
+            android:onClick="op"
-        android:text="="
+            android:text="="
-        app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintHorizontal_bias="0.0"
-        app:layout_constraintStart_toEndOf="@+id/three"
+            app:layout_constraintStart_toEndOf="@+id/three"
-        app:layout_constraintTop_toTopOf="@+id/three"
+            app:layout_constraintTop_toTopOf="@+id/three"
-        tools:ignore="HardcodedText" />
+            tools:ignore="HardcodedText" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/full/res/layout/activity_panic_settings.xml

@@ -1,21 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_height="match_parent"
-    android:orientation="vertical">
-
-    <androidx.appcompat.widget.Toolbar
-        android:id="@+id/toolbar"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
-        android:background="?attr/colorPrimary"
+        android:orientation="vertical"
-        app:theme="?attr/actionBarTheme" />
+        android:fitsSystemWindows="true">
 
-    <fragment xmlns:android="http://schemas.android.com/apk/res/android"
+    <com.google.android.material.appbar.AppBarLayout
-        android:id="@+id/fragment_container"
+            android:layout_width="match_parent"
-        class="org.fdroid.fdroid.panic.PanicPreferencesFragment"
+            android:layout_height="wrap_content"
-        android:layout_width="match_parent"
+            android:fitsSystemWindows="true"
-        android:layout_height="match_parent" />
+            app:liftOnScroll="true">
+
+        <com.google.android.material.appbar.MaterialToolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:title="@string/panic_settings"
+                app:navigationIcon="@drawable/ic_back"
+                style="@style/Widget.MaterialComponents.Toolbar.PrimarySurface" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <androidx.fragment.app.FragmentContainerView
+            android:id="@+id/fragment_container"
+            class="org.fdroid.fdroid.panic.PanicPreferencesFragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
 
 </LinearLayout>

app/src/full/res/layout/main_tab_categories.xml

@@ -5,7 +5,8 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true">
 
     <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
         android:layout_width="match_parent"
@@ -16,7 +17,7 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent">
 
-            <org.fdroid.fdroid.views.BannerUpdatingRepos
+            <org.fdroid.fdroid.views.StatusBanner
                 android:id="@+id/banner_updating_repos"
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"

app/src/full/res/layout/main_tab_swap.xml

@@ -11,7 +11,7 @@
             android:id="@+id/image"
             android:layout_width="0dp"
             android:layout_height="0dp"
-            android:src="@drawable/nearby_splash"
+            app:srcCompat="@drawable/nearby_splash"
             android:importantForAccessibility="no"
             app:layout_constraintRight_toRightOf="parent"
             app:layout_constraintLeft_toLeftOf="parent"

app/src/full/res/layout/select_local_apps_list_item.xml

@@ -16,7 +16,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:minHeight="?android:attr/listPreferredItemHeight"
+    android:minHeight="?attr/listPreferredItemHeight"
     android:paddingBottom="2dip"
     android:paddingTop="2dip">
 
@@ -25,10 +25,9 @@
         android:layout_width="48dip"
         android:layout_height="48dip"
         android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-        android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+        android:layout_marginStart="?attr/listPreferredItemPaddingStart"
         android:layout_marginTop="6dip"
         android:layout_alignParentStart="true"
-        android:layout_alignParentLeft="true"
         tools:src="@drawable/ic_launcher"
         tools:ignore="ContentDescription" />
 
@@ -37,15 +36,13 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-        android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+        android:layout_marginStart="?attr/listPreferredItemPaddingStart"
         android:layout_alignParentRight="true"
         android:layout_alignParentEnd="true"
         android:layout_centerVertical="true" />
 
     <TwoLineListItem
-        android:layout_toRightOf="@android:id/icon"
         android:layout_toEndOf="@android:id/icon"
-        android:layout_toLeftOf="@id/checkbox"
         android:layout_toStartOf="@id/checkbox"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
@@ -56,7 +53,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+            android:layout_marginStart="?attr/listPreferredItemPaddingStart"
             android:layout_marginTop="6dip"
             android:textAppearance="?android:attr/textAppearanceMedium"
             tools:text="F-Droid" />
@@ -66,7 +63,6 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_alignStart="@+id/application_label"
-            android:layout_alignLeft="@+id/application_label"
             android:layout_below="@+id/application_label"
             android:textAppearance="?android:attr/textAppearanceSmall"
             tools:text="Application Manager" />

app/src/full/res/layout/swap_activity.xml

@@ -1,24 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:tools="http://schemas.android.com/tools"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:orientation="vertical">
+        xmlns:app="http://schemas.android.com/apk/res-auto"
-
+        android:orientation="vertical"
-    <androidx.appcompat.widget.Toolbar
+        android:fitsSystemWindows="true">
-            android:id="@+id/toolbar"
+    <com.google.android.material.appbar.AppBarLayout
-            android:layout_height="wrap_content"
             android:layout_width="match_parent"
-            android:titleTextAppearance="@style/SwapTheme.Wizard.Text"
+            android:layout_height="wrap_content"
-            titleTextAppearance="@style/SwapTheme.Wizard.Text"
+            android:fitsSystemWindows="true"
-            android:minHeight="?attr/actionBarSize"
+            app:liftOnScroll="true">
-            android:background="?attr/colorPrimary"
+
-            tools:ignore="UnusedAttribute"/>
+        <com.google.android.material.appbar.MaterialToolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:navigationIcon="@drawable/ic_back"
+                style="@style/Widget.MaterialComponents.Toolbar.PrimarySurface" />
+
+    </com.google.android.material.appbar.AppBarLayout>
 
     <FrameLayout
             android:id="@+id/container"
             android:layout_width="fill_parent"
-            android:layout_height="fill_parent"/>
+            android:layout_height="fill_parent" />
 
 </LinearLayout>

app/src/full/res/layout/swap_app_list_item.xml

@@ -4,7 +4,7 @@
         xmlns:tools="http://schemas.android.com/tools"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:minHeight="?android:attr/listPreferredItemHeight"
+        android:minHeight="?attr/listPreferredItemHeight"
         android:paddingBottom="2dip"
         android:paddingTop="2dip">
 
@@ -12,7 +12,7 @@
             android:id="@android:id/icon"
             android:layout_width="48dip"
             android:layout_height="48dip"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+            android:layout_marginStart="?attr/listPreferredItemPaddingStart"
             android:layout_marginLeft="10dp"
             android:layout_marginTop="6dip"
             android:layout_alignParentStart="true"
@@ -28,7 +28,7 @@
             android:layout_centerInParent="true"
             android:orientation="vertical"
             android:gravity="end"
-            android:layout_marginEnd="?android:attr/listPreferredItemPaddingEnd"
+            android:layout_marginEnd="?attr/listPreferredItemPaddingEnd"
             android:layout_marginRight="10dp">
 
         <Button
@@ -68,7 +68,7 @@
             android:layout_toLeftOf="@+id/button_or_text"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+            android:layout_marginStart="?attr/listPreferredItemPaddingStart"
             android:layout_marginLeft="10dp"
             android:layout_marginTop="6dip"
             android:layout_marginBottom="6dip"

app/src/full/res/layout/swap_confirm_receive.xml

@@ -14,7 +14,7 @@
 
     <ImageView
             android:id="@+id/icon"
-            android:src="@drawable/ic_launcher"
+            swap:srcCompat="@drawable/ic_launcher"
             android:contentDescription="@string/icon"
             android:layout_alignParentTop="true"
             android:layout_width="117.6dp"

app/src/full/res/layout/swap_join_wifi.xml

@@ -25,7 +25,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/wifi_icon"
-            android:src="@drawable/ic_wifi"
+            swap:srcCompat="@drawable/ic_wifi"
             android:layout_below="@+id/text_description"
             android:layout_centerHorizontal="true"/>
 

app/src/full/res/layout/swap_nfc.xml

@@ -14,7 +14,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/icon_nfc"
-            android:src="@drawable/nfc_touch"
+            swap:srcCompat="@drawable/nfc_touch"
             android:layout_alignParentTop="true"
             android:layout_centerHorizontal="true"/>
 

app/src/full/res/layout/swap_peer_list_item.xml

@@ -14,13 +14,13 @@
             android:layout_width="32dp"
             android:layout_height="32dp"
             android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+            android:layout_marginStart="?attr/listPreferredItemPaddingStart"
             android:layout_gravity="center_vertical">
 
         <ImageView
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                android:src="@drawable/circle"
+                app:srcCompat="@drawable/circle"
                 app:tint="@color/swap_light_grey_icon"/>
 
         <ImageView
@@ -38,7 +38,7 @@
             android:layout_height="wrap_content"
             android:layout_gravity="center_vertical"
             android:layout_marginLeft="?attr/listPreferredItemPaddingLeft"
-            android:layout_marginStart="?android:attr/listPreferredItemPaddingStart"
+            android:layout_marginStart="?attr/listPreferredItemPaddingStart"
             android:textSize="20sp"
             android:textAppearance="?android:attr/textAppearanceMedium"
             tools:text="Nexus 4"/>

app/src/full/res/layout/swap_start_swap.xml

@@ -26,7 +26,7 @@
                 android:layout_width="24dp"
                 android:layout_height="24dp"
                 android:contentDescription="@string/use_bluetooth"
-                android:src="@drawable/ic_bluetooth_searching"/>
+                swap:srcCompat="@drawable/ic_bluetooth_searching"/>
 
         <LinearLayout
                 android:layout_width="0dp"
@@ -53,7 +53,7 @@
 
         </LinearLayout>
 
-        <androidx.appcompat.widget.SwitchCompat
+        <com.google.android.material.switchmaterial.SwitchMaterial
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:enabled="false"
@@ -74,7 +74,7 @@
                 android:layout_width="24dp"
                 android:layout_height="24dp"
                 android:contentDescription="@string/wifi"
-                android:src="@drawable/ic_wifi"/>
+                swap:srcCompat="@drawable/ic_wifi"/>
 
         <LinearLayout
                 android:layout_width="0dp"
@@ -110,7 +110,7 @@
 
         </LinearLayout>
 
-        <androidx.appcompat.widget.SwitchCompat
+        <com.google.android.material.switchmaterial.SwitchMaterial
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:id="@+id/switch_wifi"/>
@@ -155,7 +155,7 @@
 
         <Button
             android:id="@+id/btn_send_fdroid"
-            style="@style/Widget.MaterialComponents.Button.TextButton"
+            style="@style/Widget.App.Button.TextButton"
             android:layout_width="wrap_content"
             swap:icon="@drawable/ic_fdroid_grey"
             android:layout_height="wrap_content"
@@ -163,7 +163,7 @@
 
         <Button
             android:id="@+id/btn_scan_qr"
-            style="@style/Widget.MaterialComponents.Button.TextButton"
+            style="@style/Widget.App.Button.TextButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="@string/swap_scan_qr"

app/src/full/res/menu/main_activity_screens.xml

@@ -1,22 +1,42 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
-      xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
-      xmlns:tools="http://schemas.android.com/tools"
+    xmlns:tools="http://schemas.android.com/tools"
-      tools:ignore="MenuTitle">
+    tools:ignore="MenuTitle">
     <!-- android:title and android:icon are set dynamically in MainActivity -->
     <item
-            app:showAsAction="ifRoom|withText"
+        android:id="@+id/latest"
-            android:id="@+id/latest"/>
+        android:enabled="true"
+        android:icon="@drawable/ic_latest"
+        android:orderInCategory="0"
+        android:title="@string/main_menu__latest_apps"
+        app:showAsAction="ifRoom|withText" />
     <item
-            app:showAsAction="ifRoom|withText"
+        android:id="@+id/categories"
-            android:id="@+id/categories"/>
+        android:enabled="true"
+        android:icon="@drawable/ic_categories"
+        android:orderInCategory="1"
+        android:title="@string/main_menu__categories"
+        app:showAsAction="ifRoom|withText" />
     <item
-            app:showAsAction="ifRoom|withText"
+        android:id="@+id/nearby"
-            android:id="@+id/nearby"/>
+        android:enabled="true"
+        android:icon="@drawable/ic_nearby"
+        android:orderInCategory="2"
+        android:title="@string/main_menu__swap_nearby"
+        app:showAsAction="ifRoom|withText" />
     <item
-            app:showAsAction="ifRoom|withText"
+        android:id="@+id/updates"
-            android:id="@+id/updates"/>
+        android:enabled="true"
+        android:icon="@drawable/ic_updates"
+        android:orderInCategory="3"
+        android:title="@string/main_menu__updates"
+        app:showAsAction="ifRoom|withText" />
     <item
-            app:showAsAction="ifRoom|withText"
+        android:id="@+id/settings"
-            android:id="@+id/settings"/>
+        android:enabled="true"
+        android:icon="@drawable/ic_settings"
+        android:orderInCategory="4"
+        android:title="@string/menu_settings"
+        app:showAsAction="ifRoom|withText" />
 </menu>

app/src/full/res/values-v17/styles.xml

@@ -4,7 +4,7 @@
     <style name="SwapTheme.AppList.SwapSuccess" parent="SwapTheme.AppList.SwapSuccessBase">
         <item name="android:textAlignment">center</item>
         <item name="android:gravity">center</item>
-        <item name="android:fontFamily">sans-serif-light</item>
+        <item name="fontFamily">sans-serif-light</item>
     </style>
 
     <style name="SwapTheme.AppList.SwapSuccessDetails" parent="SwapTheme.AppList.SwapSuccessDetailsBase">
@@ -23,7 +23,7 @@
     </style>
 
     <style name="SwapTheme.Wizard.MainText" parent="SwapTheme.Wizard.MainTextBase">
-        <item name="android:fontFamily">sans-serif-light</item>
+        <item name="fontFamily">sans-serif-light</item>
     </style>
 
 </resources>

app/src/full/res/values-v21/styles.xml

@@ -2,7 +2,7 @@
 <resources>
 
     <style name="SwapTheme.Wizard" parent="Theme.AppCompat.Light.NoActionBar">
-        <item name="android:colorButtonNormal">#04b9e6</item>
+        <item name="colorButtonNormal">#04b9e6</item>
     </style>
 
 </resources>

app/src/full/res/values/styles.xml

@@ -3,13 +3,9 @@
 
     <style name="SwapTheme.Wizard" parent="Theme.AppCompat.Light.NoActionBar">
         <item name="colorButtonNormal">@color/swap_bright_blue</item>
-        <item name="actionButtonStyle">@style/SwapTheme.Wizard.ActionButton</item>
-        <item name="actionBarStyle">@style/Widget.AppCompat.ActionBar.Solid</item>
     </style>
 
-    <style name="SwapTheme.StartSwap" parent="AppThemeLight">
+    <style name="SwapTheme.StartSwap" parent="Theme.App"/>
-        <item name="android:background">@android:color/white</item>
-    </style>
 
     <style name="SwapTheme.StartSwap.Text" parent="@style/SwapTheme.StartSwap">
     </style>
@@ -17,10 +13,10 @@
     <style name="SwapTheme.BluetoothDeviceList" parent="@style/SwapTheme.Wizard">
     </style>
 
-    <style name="SwapTheme.AppList" parent="AppThemeLight">
+    <style name="SwapTheme.AppList" parent="Base.Theme.App">
     </style>
 
-    <style name="SwapTheme.AppList.ListItem" parent="AppThemeLight">
+    <style name="SwapTheme.AppList.ListItem" parent="Theme.App">
     </style>
 
     <style name="SwapTheme.AppList.SwapSuccessBase">

app/src/main/AndroidManifest.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
+
 <!--
  * Copyright (C) 2010-2012 Ciaran Gultnieks
  * Copyright (C) 2013-2017 Peter Serwylo
@@ -22,397 +23,328 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          xmlns:tools="http://schemas.android.com/tools"
+    xmlns:tools="http://schemas.android.com/tools"
-          package="org.fdroid.fdroid"
+    package="org.fdroid.fdroid"
-          android:installLocation="auto">
+    android:installLocation="auto">
 
     <supports-screens
-            android:anyDensity="true"
+        android:anyDensity="true"
-            android:largeScreens="true"
+        android:largeScreens="true"
-            android:normalScreens="true"
+        android:normalScreens="true"
-            android:resizeable="true"
+        android:resizeable="true"
-            android:smallScreens="true"
+        android:smallScreens="true"
-            android:xlargeScreens="true"
+        android:xlargeScreens="true" />
-    />
 
     <uses-feature
-            android:name="android.hardware.telephony"
+        android:name="android.hardware.telephony"
-            android:required="false"/>
+        android:required="false" />
     <uses-feature
-            android:name="android.hardware.wifi"
+        android:name="android.hardware.wifi"
-            android:required="false"/>
+        android:required="false" />
-    <uses-feature
-            android:name="android.hardware.touchscreen"
-            android:required="false"/>
 
-    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-feature
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+        android:name="android.hardware.touchscreen"
-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
+        android:required="false" />
-    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.NFC"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.NFC" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
-            android:name=".FDroidApp"
+        android:name=".FDroidApp"
-            android:icon="@drawable/ic_launcher"
+        android:allowBackup="true"
-            android:label="@string/app_name"
+        android:description="@string/app_description"
-            android:description="@string/app_description"
+        android:fullBackupContent="@xml/backup_rules"
-            android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
-            android:fullBackupContent="@xml/backup_rules"
+        android:label="BobStore"
-            android:networkSecurityConfig="@xml/network_security_config"
+        android:networkSecurityConfig="@xml/network_security_config"
-            android:theme="@style/AppThemeLight"
+        android:supportsRtl="true"
-            android:supportsRtl="true">
+        android:theme="@style/Theme.App">
-
-        <provider
-                android:authorities="${applicationId}.data.AppProvider"
-                android:name="org.fdroid.fdroid.data.AppProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.RepoProvider"
-                android:name="org.fdroid.fdroid.data.RepoProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.ApkProvider"
-                android:name="org.fdroid.fdroid.data.ApkProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.TempApkProvider"
-                android:name="org.fdroid.fdroid.data.TempApkProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.TempAppProvider"
-                android:name="org.fdroid.fdroid.data.TempAppProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.InstalledAppProvider"
-                android:name="org.fdroid.fdroid.data.InstalledAppProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.AppPrefsProvider"
-                android:name="org.fdroid.fdroid.data.AppPrefsProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.PackageIdProvider"
-                android:name="org.fdroid.fdroid.data.PackageIdProvider"
-                android:exported="false"/>
-
-        <provider
-                android:authorities="${applicationId}.data.CategoryProvider"
-                android:name="org.fdroid.fdroid.data.CategoryProvider"
-                android:exported="false"/>
-
-        <provider
-                android:name="org.fdroid.fdroid.installer.ApkFileProvider"
-                android:authorities="${applicationId}.installer.ApkFileProvider"
-                android:exported="false"
-                android:grantUriPermissions="true">
-            <meta-data
-                    android:name="android.support.FILE_PROVIDER_PATHS"
-                    android:resource="@xml/apk_file_provider"/>
-        </provider>
-        <provider
-                android:name="androidx.core.content.FileProvider"
-                android:authorities="${applicationId}.installer"
-                android:exported="false"
-                android:grantUriPermissions="true">
-            <meta-data
-                    android:name="android.support.FILE_PROVIDER_PATHS"
-                    android:resource="@xml/installer_file_provider"/>
-        </provider>
 
         <activity
-                android:name=".privileged.views.InstallConfirmActivity"
+            android:name=".privileged.views.InstallConfirmActivity"
-                android:label="@string/menu_install"
+            android:configChanges="layoutDirection|locale"
-                android:theme="@style/MinWithDialogBaseThemeLight"
+            android:excludeFromRecents="true"
-                android:excludeFromRecents="true"
+            android:label="@string/menu_install"
-                android:parentActivityName=".views.main.MainActivity"
+            android:parentActivityName=".views.main.MainActivity">
-                android:configChanges="layoutDirection|locale">
             <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
+                android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.main.MainActivity"/>
+                android:value=".views.main.MainActivity" />
-        </activity>
-        <activity
-                android:name=".privileged.views.UninstallDialogActivity"
-                android:excludeFromRecents="true"
-                android:theme="@style/AppThemeTransparent"/>
-        <activity
-                android:name=".views.ManageReposActivity"
-                android:label="@string/menu_manage"
-                android:launchMode="singleTask"
-                android:parentActivityName=".views.main.MainActivity"
-                android:configChanges="layoutDirection|locale">
-            <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.main.MainActivity"/>
-        </activity>
-        <activity
-                android:name=".NfcNotEnabledActivity"
-                android:noHistory="true"
-                android:configChanges="layoutDirection|locale"/>
-        <activity
-                android:name=".views.RepoDetailsActivity"
-                android:label="@string/repo_details"
-                android:parentActivityName=".views.ManageReposActivity"
-                android:windowSoftInputMode="stateHidden"
-                android:configChanges="layoutDirection|locale">
-            <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.ManageReposActivity"/>
         </activity>
 
         <activity
-                android:name=".views.AppDetailsActivity"
+            android:name=".privileged.views.UninstallDialogActivity"
-                android:label="@string/app_details"
+            android:excludeFromRecents="true" />
-                android:exported="true"
+
-                android:parentActivityName=".views.main.MainActivity"
+        <activity
-                android:configChanges="layoutDirection|locale">
+            android:name=".views.ManageReposActivity"
+            android:configChanges="layoutDirection|locale"
+            android:label="@string/menu_manage"
+            android:launchMode="singleTask"
+            android:parentActivityName=".views.main.MainActivity">
             <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
+                android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.main.MainActivity"/>
+                android:value=".views.main.MainActivity" />
         </activity>
-        <activity
-                android:name=".acra.CrashReportActivity"
-                android:theme="@style/AppThemeDark"
-                android:process=":error_report"
-                android:launchMode="singleInstance"
-                android:excludeFromRecents="true"
-                android:finishOnTaskLaunch="true"/>
-        <activity android:name=".views.ScreenShotsActivity"/>
-        <!-- Note: AppThemeTransparent, this activity shows dialogs only -->
-        <activity android:name=".data.ObbUrlActivity"
-                  android:theme="@android:style/Theme.NoDisplay"/>
-        <!-- Note: AppThemeTransparent, this activity shows dialogs only -->
-        <activity
-                android:name=".installer.DefaultInstallerActivity"
-                android:theme="@style/AppThemeTransparent"/>
-        <!-- Note: AppThemeTransparent, this activity shows dialogs only -->
-        <activity
-                android:name=".installer.ErrorDialogActivity"
-                android:theme="@style/AppThemeTransparent"/>
-
-        <receiver android:name=".receiver.StartupReceiver">
-            <intent-filter>
-                <action android:name="android.intent.action.BOOT_COMPLETED"/>
-
-                <category android:name="android.intent.category.HOME"/>
-            </intent-filter>
-        </receiver>
-
-        <receiver android:name=".receiver.PackageManagerReceiver">
-            <intent-filter>
-                <action android:name="android.intent.action.PACKAGE_ADDED"/>
-                <action android:name="android.intent.action.PACKAGE_CHANGED"/>
-                <action android:name="android.intent.action.PACKAGE_REMOVED"/>
-
-                <data android:scheme="package"/>
-            </intent-filter>
-        </receiver>
-
-        <receiver android:name=".NotificationBroadcastReceiver" android:exported="false">
-            <!-- Doesn't require an intent-filter because it is explicitly invoked via Intent.setClass() -->
-        </receiver>
-
-        <receiver android:name=".receiver.DeviceStorageReceiver">
-            <intent-filter>
-                <action android:name="android.intent.action.DEVICE_STORAGE_LOW"/>
-            </intent-filter>
-        </receiver>
-
-        <service
-                android:name=".UpdateService"
-                android:permission="android.permission.BIND_JOB_SERVICE"
-                android:exported="false"/>
-        <service
-                android:name=".UpdateJobService"
-                android:exported="false"
-                android:permission="android.permission.BIND_JOB_SERVICE"/>
-        <service
-                android:name=".net.DownloaderService"
-                android:exported="false"/>
-        <service
-                android:name=".installer.InstallerService"
-                android:permission="android.permission.BIND_JOB_SERVICE"
-                android:exported="false"/>
-        <service
-                android:name=".DeleteCacheService"
-                android:permission="android.permission.BIND_JOB_SERVICE"
-                android:exported="false"/>
-        <service
-                android:name=".net.ConnectivityMonitorService"
-                android:permission="android.permission.BIND_JOB_SERVICE"
-                android:exported="false"/>
-        <service
-                android:name=".installer.InstallManagerService"
-                android:exported="false"/>
-        <service
-                android:name=".installer.InstallHistoryService"
-                android:exported="false"/>
-        <service
-                android:name=".installer.ObfInstallerService"
-                android:exported="false"/>
-        <service
-                android:name=".data.InstalledAppProviderService"
-                android:permission="android.permission.BIND_JOB_SERVICE"
-                android:exported="false"/>
-        <service
-                android:name=".AddRepoIntentService"
-                android:exported="false"/>
-
-        <provider
-                android:name="androidx.work.impl.WorkManagerInitializer"
-                android:authorities="${applicationId}.workmanager-init"
-                android:exported="false"
-                tools:node="remove" />
 
         <activity
-                android:name=".views.main.MainActivity"
+            android:name=".NfcNotEnabledActivity"
-                android:launchMode="singleTop"
+            android:configChanges="layoutDirection|locale"
-                android:windowSoftInputMode="adjustResize">
+            android:noHistory="true" />
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
 
-                <category android:name="android.intent.category.LAUNCHER"/>
+        <activity
+            android:name=".views.RepoDetailsActivity"
+            android:configChanges="layoutDirection|locale"
+            android:label="@string/repo_details"
+            android:parentActivityName=".views.ManageReposActivity"
+            android:windowSoftInputMode="stateHidden">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".views.ManageReposActivity" />
+        </activity>
+
+        <activity
+            android:name=".views.AppDetailsActivity"
+            android:configChanges="layoutDirection|locale"
+            android:exported="true"
+            android:label="@string/app_details"
+            android:parentActivityName=".views.main.MainActivity">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".views.main.MainActivity" />
+        </activity>
+
+        <activity
+            android:name=".acra.CrashReportActivity"
+            android:excludeFromRecents="true"
+            android:finishOnTaskLaunch="true"
+            android:launchMode="singleInstance"
+            android:process=":error_report" />
+
+        <activity android:name=".views.ScreenShotsActivity" />
+
+        <activity
+            android:name=".data.ObbUrlActivity"
+            android:theme="@android:style/Theme.NoDisplay" />
+
+        <activity
+            android:name=".installer.DefaultInstallerActivity"
+            android:theme="@style/AppThemeTransparent" />
+        <activity
+            android:name=".installer.ErrorDialogActivity"
+            android:theme="@style/AppThemeTransparent" />
+
+        <activity
+            android:name=".views.main.MainActivity"
+            android:launchMode="singleTop"
+            android:windowSoftInputMode="adjustResize">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
 
 
             <!-- App URLs -->
 
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="fdroid.app"/>
+                <data android:scheme="fdroid.app" />
             </intent-filter>
 
             <intent-filter android:autoVerify="false">
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="https"/>
+                <data android:scheme="https" />
-                <data android:host="f-droid.org"/>
+                <data android:host="f-droid.org" />
-                <data android:host="www.f-droid.org"/>
+                <data android:host="www.f-droid.org" />
-                <data android:host="staging.f-droid.org"/>
+                <data android:host="staging.f-droid.org" />
-                <data android:pathPrefix="/app/"/>
+                <data android:pathPrefix="/app/" />
-                <data android:pathPrefix="/packages/"/>
+                <data android:pathPrefix="/packages/" />
-                <data android:pathPrefix="/repository/browse"/>
+                <data android:pathPrefix="/repository/browse" />
                 <!-- support localized URLs -->
-                <data android:pathPattern="/.*/packages/.*"/>
+                <data android:pathPattern="/.*/packages/.*" />
-                <data android:pathPattern="/.*/packages/.*/"/>
+                <data android:pathPattern="/.*/packages/.*/" />
             </intent-filter>
 
             <intent-filter android:autoVerify="false">
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="http"/>
+                <data android:scheme="http" />
-                <data android:host="f-droid.org"/>
+                <data android:host="f-droid.org" />
-                <data android:host="www.f-droid.org"/>
+                <data android:host="www.f-droid.org" />
-                <data android:host="staging.f-droid.org"/>
+                <data android:host="staging.f-droid.org" />
-                <data android:pathPrefix="/app/"/>
+                <data android:pathPrefix="/app/" />
-                <data android:pathPrefix="/packages/"/>
+                <data android:pathPrefix="/packages/" />
-                <data android:pathPrefix="/repository/browse"/>
+                <data android:pathPrefix="/repository/browse" />
                 <!-- support localized URLs -->
-                <data android:pathPattern="/.*/packages/.*"/>
+                <data android:pathPattern="/.*/packages/.*" />
-                <data android:pathPattern="/.*/packages/.*/"/>
+                <data android:pathPattern="/.*/packages/.*/" />
             </intent-filter>
 
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="market" android:host="details"/>
+                <data
+                    android:host="details"
+                    android:scheme="market" />
             </intent-filter>
 
             <intent-filter android:autoVerify="false">
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="http"/>
+                <data android:scheme="http" />
-                <data android:scheme="https"/>
+                <data android:scheme="https" />
-                <data android:host="play.google.com"/> <!-- they don't do www. -->
+                <data android:host="play.google.com" /> <!-- they don't do www. -->
-                <data android:path="/store/apps/details"/>
+                <data android:path="/store/apps/details" />
             </intent-filter>
 
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="amzn" android:host="apps" android:path="/android"/>
+                <data
+                    android:host="apps"
+                    android:path="/android"
+                    android:scheme="amzn" />
             </intent-filter>
 
             <intent-filter android:autoVerify="false">
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="http"/>
+                <data android:scheme="http" />
-                <data android:scheme="https"/>
+                <data android:scheme="https" />
-                <data android:host="amazon.com"/>
+                <data android:host="amazon.com" />
-                <data android:host="www.amazon.com"/>
+                <data android:host="www.amazon.com" />
-                <data android:path="/gp/mas/dl/android"/>
+                <data android:path="/gp/mas/dl/android" />
             </intent-filter>
 
 
             <!-- Search URLs -->
 
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="fdroid.search"/>
+                <data android:scheme="fdroid.search" />
             </intent-filter>
 
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="market" android:host="search"/>
+                <data
+                    android:host="search"
+                    android:scheme="market" />
             </intent-filter>
 
             <intent-filter android:autoVerify="false">
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
 
-                <data android:scheme="http"/>
+                <data android:scheme="http" />
-                <data android:scheme="https"/>
+                <data android:scheme="https" />
-                <data android:host="play.google.com"/> <!-- they don't do www. -->
+                <data android:host="play.google.com" /> <!-- they don't do www. -->
-                <data android:path="/store/search"/>
+                <data android:path="/store/search" />
             </intent-filter>
 
             <intent-filter>
-                <action android:name="android.intent.action.SEARCH"/>
+                <action android:name="android.intent.action.SEARCH" />
             </intent-filter>
 
-            <meta-data
+            <intent-filter android:autoVerify="false">
-                    android:name="android.app.searchable"
+                <action android:name="android.intent.action.VIEW" />
-                    android:resource="@xml/searchable"/>
+
+                <category android:name="android.intent.category.BROWSABLE" />
+                <category android:name="android.intent.category.DEFAULT" />
+
+                <!--
+                Android's scheme matcher is case-sensitive, so include
+                ALL CAPS versions to support ALL CAPS URLs in QR Codes.
+                QR Codes have a special ALL CAPS mode that uses a reduced
+                character set, making for more compact QR Codes.
+                -->
+                <data android:scheme="http" />
+                <data
+                    android:scheme="HTTP"
+                    tools:ignore="AppLinkUrlError" />
+                <data android:scheme="https" />
+                <data
+                    android:scheme="HTTPS"
+                    tools:ignore="AppLinkUrlError" />
+
+                <data android:host="*" />
+
+                <!--
+                The pattern matcher here is poorly implemented, in particular the * is
+                non-greedy, so you have to do stupid tricks to match patterns that have
+                repeat characters in them. http://stackoverflow.com/a/8599921/306864
+                -->
+                <data android:path="/fdroid/repo" />
+                <data android:pathPattern="/fdroid/repo/*" />
+                <data android:pathPattern="/.*/fdroid/repo" />
+                <data android:pathPattern="/.*/fdroid/repo/*" />
+                <data android:pathPattern="/.*/.*/fdroid/repo" />
+                <data android:pathPattern="/.*/.*/fdroid/repo/*" />
+                <data android:pathPattern="/.*/.*/.*/fdroid/repo" />
+                <data android:pathPattern="/.*/.*/.*/fdroid/repo/*" />
+                <data android:pathPattern="/.*/.*/.*/.*/fdroid/repo" />
+                <data android:pathPattern="/.*/.*/.*/.*/fdroid/repo/*" />
+                <data android:pathPattern="/.*/.*/.*/.*/.*/fdroid/repo" />
+                <data android:pathPattern="/.*/.*/.*/.*/.*/fdroid/repo/*" />
+                <data android:pathPattern="/.*/.*/.*/.*/.*/.*/fdroid/repo" />
+                <data android:pathPattern="/.*/.*/.*/.*/.*/.*/fdroid/repo/*" />
+                <data android:path="/fdroid/archive" />
+                <data android:pathPattern="/fdroid/archive/*" />
+                <data android:pathPattern="/.*/fdroid/archive" />
+                <data android:pathPattern="/.*/fdroid/archive/*" />
+                <data android:pathPattern="/.*/.*/fdroid/archive" />
+                <data android:pathPattern="/.*/.*/fdroid/archive/*" />
+                <data android:pathPattern="/.*/.*/.*/fdroid/archive" />
+                <data android:pathPattern="/.*/.*/.*/fdroid/archive/*" />
+                <data android:pathPattern="/.*/.*/.*/.*/fdroid/archive" />
+                <data android:pathPattern="/.*/.*/.*/.*/fdroid/archive/*" />
+                <!--
+                Some QR Code scanners don't respect custom schemes like fdroidrepo://,
+                so this is a workaround, since the local repo URL is all uppercase in
+                the QR Code for sending the local repo to another device.
+                -->
+                <data android:path="/FDROID/REPO" />
+                <data android:pathPattern="/.*/FDROID/REPO" />
+                <data android:pathPattern="/.*/.*/FDROID/REPO" />
+                <data android:pathPattern="/.*/.*/.*/FDROID/REPO" />
+            </intent-filter>
 
 
             <!-- Repo URLs -->
@@ -432,11 +364,11 @@
             This filter supports HTTP and HTTPS schemes. There is an additional filter for
             fdroidrepo:// and fdroidrepos://
             -->
-            <intent-filter android:autoVerify="false">
+            <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.intent.action.VIEW" />
 
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.BROWSABLE" />
-                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.DEFAULT" />
 
                 <!--
                 Android's scheme matcher is case-sensitive, so include
@@ -444,51 +376,14 @@
                 QR Codes have a special ALL CAPS mode that uses a reduced
                 character set, making for more compact QR Codes.
                 -->
-                <data android:scheme="http"/>
+                <data android:scheme="fdroidrepo" />
-                <data android:scheme="HTTP" tools:ignore="AppLinkUrlError"/>
+                <data
-                <data android:scheme="https"/>
+                    android:scheme="FDROIDREPO"
-                <data android:scheme="HTTPS" tools:ignore="AppLinkUrlError"/>
+                    tools:ignore="AppLinkUrlError" />
-
+                <data android:scheme="fdroidrepos" />
-                <data android:host="*"/>
+                <data
-
+                    android:scheme="FDROIDREPOS"
-                <!--
+                    tools:ignore="AppLinkUrlError" />
-                The pattern matcher here is poorly implemented, in particular the * is
-                non-greedy, so you have to do stupid tricks to match patterns that have
-                repeat characters in them. http://stackoverflow.com/a/8599921/306864
-                -->
-                <data android:path="/fdroid/repo"/>
-                <data android:pathPattern="/fdroid/repo/*"/>
-                <data android:pathPattern="/.*/fdroid/repo"/>
-                <data android:pathPattern="/.*/fdroid/repo/*"/>
-                <data android:pathPattern="/.*/.*/fdroid/repo"/>
-                <data android:pathPattern="/.*/.*/fdroid/repo/*"/>
-                <data android:pathPattern="/.*/.*/.*/fdroid/repo"/>
-                <data android:pathPattern="/.*/.*/.*/fdroid/repo/*"/>
-                <data android:pathPattern="/.*/.*/.*/.*/fdroid/repo"/>
-                <data android:pathPattern="/.*/.*/.*/.*/fdroid/repo/*"/>
-                <data android:pathPattern="/.*/.*/.*/.*/.*/fdroid/repo"/>
-                <data android:pathPattern="/.*/.*/.*/.*/.*/fdroid/repo/*"/>
-                <data android:pathPattern="/.*/.*/.*/.*/.*/.*/fdroid/repo"/>
-                <data android:pathPattern="/.*/.*/.*/.*/.*/.*/fdroid/repo/*"/>
-                <data android:path="/fdroid/archive"/>
-                <data android:pathPattern="/fdroid/archive/*"/>
-                <data android:pathPattern="/.*/fdroid/archive"/>
-                <data android:pathPattern="/.*/fdroid/archive/*"/>
-                <data android:pathPattern="/.*/.*/fdroid/archive"/>
-                <data android:pathPattern="/.*/.*/fdroid/archive/*"/>
-                <data android:pathPattern="/.*/.*/.*/fdroid/archive"/>
-                <data android:pathPattern="/.*/.*/.*/fdroid/archive/*"/>
-                <data android:pathPattern="/.*/.*/.*/.*/fdroid/archive"/>
-                <data android:pathPattern="/.*/.*/.*/.*/fdroid/archive/*"/>
-                <!--
-                Some QR Code scanners don't respect custom schemes like fdroidrepo://,
-                so this is a workaround, since the local repo URL is all uppercase in
-                the QR Code for sending the local repo to another device.
-                -->
-                <data android:path="/FDROID/REPO"/>
-                <data android:pathPattern="/.*/FDROID/REPO"/>
-                <data android:pathPattern="/.*/.*/FDROID/REPO"/>
-                <data android:pathPattern="/.*/.*/.*/FDROID/REPO"/>
             </intent-filter>
 
             <!--
@@ -496,58 +391,186 @@
             looks for fdroidrepos://* and doesn't care what the path is.
             -->
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
+                <action android:name="android.nfc.action.NDEF_DISCOVERED" />
 
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.DEFAULT"/>
-
-                <!--
-                Android's scheme matcher is case-sensitive, so include
-                ALL CAPS versions to support ALL CAPS URLs in QR Codes.
-                QR Codes have a special ALL CAPS mode that uses a reduced
-                character set, making for more compact QR Codes.
-                -->
-                <data android:scheme="fdroidrepo"/>
-                <data android:scheme="FDROIDREPO" tools:ignore="AppLinkUrlError"/>
-                <data android:scheme="fdroidrepos"/>
-                <data android:scheme="FDROIDREPOS" tools:ignore="AppLinkUrlError"/>
-            </intent-filter>
-
-
-            <!-- Handle NFC tags detected from outside our application -->
-
-            <intent-filter>
-                <action android:name="android.nfc.action.NDEF_DISCOVERED"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
 
                 <!--
                 URIs that come in via NFC have scheme/host normalized to all lower case
                 https://developer.android.com/reference/android/nfc/NfcAdapter.html#ACTION_NDEF_DISCOVERED
                 -->
-                <data android:scheme="fdroidrepo"/>
+                <data android:scheme="fdroidrepo" />
-                <data android:scheme="fdroidrepos"/>
+                <data android:scheme="fdroidrepos" />
             </intent-filter>
 
-        </activity>
 
-        <activity android:name=".views.apps.AppListActivity"/>
+            <!-- Handle NFC tags detected from outside our application -->
 
-        <activity android:name=".views.installed.InstalledAppsActivity"
-                  android:parentActivityName=".views.main.MainActivity">
             <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
+                android:name="android.app.searchable"
-                    android:value=".views.main.MainActivity"/>
+                android:resource="@xml/searchable" />
-        </activity>
-        <activity android:name=".views.InstallHistoryActivity"
-                  android:parentActivityName=".views.main.MainActivity">
-            <meta-data
-                    android:name="android.support.PARENT_ACTIVITY"
-                    android:value=".views.main.MainActivity"/>
-        </activity>
 
-        <activity android:name=".AboutActivity" android:theme="@style/Theme.AppCompat.Light.Dialog"/>
+        </activity>
-        <activity android:name=".installer.FileInstallerActivity" android:theme="@style/AppThemeTransparent"/>
+        <activity android:name=".views.apps.AppListActivity" />
+        <activity
+            android:name=".views.installed.InstalledAppsActivity"
+            android:parentActivityName=".views.main.MainActivity">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".views.main.MainActivity" />
+        </activity>
+        <activity
+            android:name=".views.InstallHistoryActivity"
+            android:parentActivityName=".views.main.MainActivity">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".views.main.MainActivity" />
+        </activity>
+        <activity android:name=".AboutActivity" />
+
+        <activity
+            android:name=".installer.FileInstallerActivity"
+            android:theme="@style/AppThemeTransparent" />
+
+        <provider
+            android:name="org.fdroid.fdroid.data.AppProvider"
+            android:authorities="${applicationId}.data.AppProvider"
+            android:exported="false" />
+        <provider
+            android:name="org.fdroid.fdroid.data.RepoProvider"
+            android:authorities="${applicationId}.data.RepoProvider"
+            android:exported="false" />
+        <!-- Note: AppThemeTransparent, this activity shows dialogs only -->
+        <provider
+            android:name="org.fdroid.fdroid.data.ApkProvider"
+            android:authorities="${applicationId}.data.ApkProvider"
+            android:exported="false" />
+        <!-- Note: AppThemeTransparent, this activity shows dialogs only -->
+        <provider
+            android:name="org.fdroid.fdroid.data.TempApkProvider"
+            android:authorities="${applicationId}.data.TempApkProvider"
+            android:exported="false" />
+        <!-- Note: AppThemeTransparent, this activity shows dialogs only -->
+        <provider
+            android:name="org.fdroid.fdroid.data.TempAppProvider"
+            android:authorities="${applicationId}.data.TempAppProvider"
+            android:exported="false" />
+
+        <provider
+            android:name="org.fdroid.fdroid.data.InstalledAppProvider"
+            android:authorities="${applicationId}.data.InstalledAppProvider"
+            android:exported="false" />
+
+        <provider
+            android:name="org.fdroid.fdroid.data.AppPrefsProvider"
+            android:authorities="${applicationId}.data.AppPrefsProvider"
+            android:exported="false" />
+
+        <provider
+            android:name="org.fdroid.fdroid.data.PackageIdProvider"
+            android:authorities="${applicationId}.data.PackageIdProvider"
+            android:exported="false" />
+
+        <provider
+            android:name="org.fdroid.fdroid.data.CategoryProvider"
+            android:authorities="${applicationId}.data.CategoryProvider"
+            android:exported="false" />
+
+        <provider
+            android:name="org.fdroid.fdroid.installer.ApkFileProvider"
+            android:authorities="${applicationId}.installer.ApkFileProvider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/apk_file_provider" />
+        </provider>
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.installer"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/installer_file_provider" />
+        </provider>
+        <provider
+            android:name="androidx.work.impl.WorkManagerInitializer"
+            android:authorities="${applicationId}.workmanager-init"
+            android:exported="false"
+            tools:node="remove" />
+
+        <receiver android:name=".receiver.StartupReceiver">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+
+                <category android:name="android.intent.category.HOME" />
+            </intent-filter>
+        </receiver>
+        <receiver android:name=".receiver.PackageManagerReceiver">
+            <intent-filter>
+                <action android:name="android.intent.action.PACKAGE_ADDED" />
+                <action android:name="android.intent.action.PACKAGE_CHANGED" />
+                <action android:name="android.intent.action.PACKAGE_REMOVED" />
+
+                <data android:scheme="package" />
+            </intent-filter>
+        </receiver>
+        <receiver
+            android:name=".NotificationBroadcastReceiver"
+            android:exported="false">
+            <!-- Doesn't require an intent-filter because it is explicitly invoked via Intent.setClass() -->
+        </receiver>
+        <receiver android:name=".receiver.DeviceStorageReceiver">
+            <intent-filter>
+                <action android:name="android.intent.action.DEVICE_STORAGE_LOW" />
+            </intent-filter>
+        </receiver>
+
+        <service
+            android:name=".UpdateService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+        <service
+            android:name=".UpdateJobService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+        <service
+            android:name=".net.DownloaderService"
+            android:exported="false" />
+        <service
+            android:name=".installer.InstallerService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+
+        <service
+            android:name=".DeleteCacheService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+
+        <service
+            android:name=".net.ConnectivityMonitorService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+
+        <service
+            android:name=".installer.InstallManagerService"
+            android:exported="false" />
+
+        <service
+            android:name=".installer.InstallHistoryService"
+            android:exported="false" />
+        <service
+            android:name=".installer.ObfInstallerService"
+            android:exported="false" />
+
+        <service
+            android:name=".data.InstalledAppProviderService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+        <service
+            android:name=".AddRepoIntentService"
+            android:exported="false" />
 
     </application>
 

app/src/main/java/com/google/zxing/integration/android/IntentIntegrator.java

@@ -16,7 +16,6 @@
 
 package com.google.zxing.integration.android;
 
-import android.app.AlertDialog;
 import android.content.ActivityNotFoundException;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -26,6 +25,7 @@ import android.net.Uri;
 import android.os.Bundle;
 import android.util.Log;
 
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.fragment.app.Fragment;
 
@@ -336,7 +336,7 @@ public class IntentIntegrator {
      * @param intent Intent to start.
      * @param code Request code for the activity
      * @see android.app.AppCompatActivity#startActivityForResult(Intent, int)
-     * @see android.app.Fragment#startActivityForResult(Intent, int)
+     * @see Fragment#startActivityForResult(Intent, int)
      */
     protected void startActivityForResult(Intent intent, int code) {
         if (fragment == null) {

app/src/main/java/org/fdroid/fdroid/AboutActivity.java

@@ -1,32 +0,0 @@
-package org.fdroid.fdroid;
-
-import android.os.Bundle;
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AppCompatActivity;
-import android.view.View;
-import android.widget.TextView;
-
-public class AboutActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        FDroidApp fdroidApp = (FDroidApp) getApplication();
-        fdroidApp.applyDialogTheme(this);
-
-        super.onCreate(savedInstanceState);
-
-        setContentView(R.layout.about);
-
-        String versionName = Utils.getVersionName(this);
-        if (versionName != null) {
-            ((TextView) findViewById(R.id.version)).setText(versionName);
-        }
-
-        findViewById(R.id.ok_button).setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                finish();
-            }
-        });
-    }
-}

app/src/main/java/org/fdroid/fdroid/AddRepoIntentService.java

@@ -5,10 +5,9 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Log;
+
 import org.fdroid.fdroid.data.Repo;
 import org.fdroid.fdroid.data.RepoProvider;
 import org.fdroid.fdroid.views.ManageReposActivity;
@@ -18,6 +17,9 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.Locale;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
 /**
  * Handles requests to add new repos via URLs.  This is an {@code IntentService}
  * so that requests are queued, which is necessary when either

app/src/main/java/org/fdroid/fdroid/AppUpdateStatusManager.java

@@ -9,10 +9,7 @@ import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.os.Parcel;
 import android.os.Parcelable;
-import androidx.annotation.NonNull;
+
-import androidx.annotation.Nullable;
-import androidx.core.app.TaskStackBuilder;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import org.fdroid.fdroid.data.Apk;
 import org.fdroid.fdroid.data.App;
 import org.fdroid.fdroid.data.AppProvider;
@@ -28,6 +25,11 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.app.TaskStackBuilder;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 /**
  * Manages the state of APKs that are being installed or that have updates available.
  * This also ensures the state is saved across F-Droid restarts, and repopulates

app/src/main/java/org/fdroid/fdroid/CompatibilityChecker.java

@@ -4,7 +4,7 @@ import android.content.Context;
 import android.content.pm.FeatureInfo;
 import android.content.pm.PackageManager;
 import android.os.Build;
-import androidx.annotation.Nullable;
+
 import org.fdroid.fdroid.compat.SupportedArchitectures;
 import org.fdroid.fdroid.data.Apk;
 
@@ -14,6 +14,8 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
+import androidx.annotation.Nullable;
+
 // Call getIncompatibleReasons(apk) on an instance of this class to
 // find reasons why an apk may be incompatible with the user's device.
 public class CompatibilityChecker {

app/src/main/java/org/fdroid/fdroid/DeleteCacheService.java

@@ -3,14 +3,16 @@ package org.fdroid.fdroid;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Process;
-import androidx.annotation.NonNull;
-import androidx.core.app.JobIntentService;
-import androidx.core.content.ContextCompat;
 import android.util.Log;
+
 import org.apache.commons.io.FileUtils;
 
 import java.io.File;
 
+import androidx.annotation.NonNull;
+import androidx.core.app.JobIntentService;
+import androidx.core.content.ContextCompat;
+
 /**
  * An {@link JobIntentService} subclass for deleting the full cache for this app.
  */

app/src/main/java/org/fdroid/fdroid/FDroidApp.java

@@ -24,7 +24,6 @@
 package org.fdroid.fdroid;
 
 import android.annotation.TargetApi;
-import androidx.appcompat.app.AppCompatActivity;
 import android.app.ActivityManager;
 import android.app.ActivityManager.RunningAppProcessInfo;
 import android.app.Application;
@@ -46,10 +45,7 @@ import android.util.Log;
 import android.view.Display;
 import android.view.WindowManager;
 import android.widget.Toast;
-import androidx.annotation.NonNull;
+
-import androidx.annotation.Nullable;
-import androidx.collection.LongSparseArray;
-import androidx.core.content.ContextCompat;
 import com.nostra13.universalimageloader.cache.disc.DiskCache;
 import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiskCache;
 import com.nostra13.universalimageloader.cache.disc.impl.ext.LruDiskCache;
@@ -57,8 +53,7 @@ import com.nostra13.universalimageloader.core.DefaultConfigurationFactory;
 import com.nostra13.universalimageloader.core.ImageLoader;
 import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
 import com.nostra13.universalimageloader.core.process.BitmapProcessor;
-import info.guardianproject.netcipher.NetCipher;
+
-import info.guardianproject.netcipher.proxy.OrbotHelper;
 import org.acra.ACRA;
 import org.acra.ReportField;
 import org.acra.ReportingInteractionMode;
@@ -82,13 +77,23 @@ import org.fdroid.fdroid.net.ImageLoaderForUIL;
 import org.fdroid.fdroid.panic.HidingManager;
 import org.fdroid.fdroid.work.CleanCacheWorker;
 
-import javax.microedition.khronos.opengles.GL10;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.security.Security;
 import java.util.List;
 import java.util.UUID;
 
+import javax.microedition.khronos.opengles.GL10;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.collection.LongSparseArray;
+import androidx.core.content.ContextCompat;
+import info.guardianproject.netcipher.NetCipher;
+import info.guardianproject.netcipher.proxy.OrbotHelper;
+
 @ReportsCrashes(mailTo = BuildConfig.ACRA_REPORT_EMAIL,
         mode = ReportingInteractionMode.DIALOG,
         reportDialogClass = org.fdroid.fdroid.acra.CrashReportActivity.class,
@@ -152,30 +157,47 @@ public class FDroidApp extends Application implements androidx.work.Configuratio
 
     private static Theme curTheme = Theme.light;
 
-    public void reloadTheme() {
+    /**
-        curTheme = Preferences.get().getTheme();
+     * Apply pure black background in dark theme setting. Must be called in every activity's
-    }
+     * {@link AppCompatActivity#onCreate()}, before super.onCreate().
-
+     *
-    public void applyTheme(AppCompatActivity activity) {
+     * @param activity The activity to apply the setting.
-        activity.setTheme(getCurThemeResId());
+     */
-        setSecureWindow(activity);
+    public void applyPureBlackBackgroundInDarkTheme(AppCompatActivity activity) {
-    }
+        final boolean isPureBlack = Preferences.get().isPureBlack();
-
+        if (isPureBlack) {
-    public static int getCurThemeResId() {
+            activity.setTheme(R.style.Theme_App_Black);
-        switch (curTheme) {
-            case light:
-                return R.style.AppThemeLight;
-            case dark:
-                return R.style.AppThemeDark;
-            case night:
-                return R.style.AppThemeNight;
-            default:
-                return R.style.AppThemeLight;
         }
     }
 
+    public void applyTheme() {
+        curTheme = Preferences.get().getTheme();
+        switch (curTheme) {
+            case dark:
+                AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
+                break;
+            case light:
+                AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
+                break;
+            default:
+                // `Set by Battery Saver` for Q above (inclusive), `Use system default` for Q below
+                // https://medium.com/androiddevelopers/appcompat-v23-2-daynight-d10f90c83e94
+                if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.P) {
+                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY);
+                } else {
+                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
+                }
+                break;
+        }
+    }
+
+    //    TODO: ResId no longer exists.
+    public static int getCurThemeResId() {
+        return R.style.Theme_App;
+    }
+
     public static boolean isAppThemeLight() {
-        return curTheme == Theme.light;
+        return AppCompatDelegate.getDefaultNightMode() == AppCompatDelegate.MODE_NIGHT_NO;
     }
 
     public void applyDialogTheme(AppCompatActivity activity) {
@@ -191,10 +213,7 @@ public class FDroidApp extends Application implements androidx.work.Configuratio
 
     private static int getCurDialogThemeResId() {
         switch (curTheme) {
-            case light:
-                return R.style.MinWithDialogBaseThemeLight;
             case dark:
-                return R.style.MinWithDialogBaseThemeDark;
             case night:
                 return R.style.MinWithDialogBaseThemeDark;
             default:
@@ -202,24 +221,6 @@ public class FDroidApp extends Application implements androidx.work.Configuratio
         }
     }
 
-    /**
-     * Force reload the {@link AppCompatActivity to make theme changes take effect.}
-     * Same as {@link Languages#forceChangeLanguage(AppCompatActivity)}
-     *
-     * @param activity the {@code AppCompatActivity} to force reload
-     */
-    public static void forceChangeTheme(AppCompatActivity activity) {
-        Intent intent = activity.getIntent();
-        if (intent == null) { // when launched as LAUNCHER
-            return;
-        }
-        intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
-        activity.finish();
-        activity.overridePendingTransition(0, 0);
-        activity.startActivity(intent);
-        activity.overridePendingTransition(0, 0);
-    }
-
     public static void enableBouncyCastle() {
         Security.addProvider(BOUNCYCASTLE_PROVIDER);
     }
@@ -268,7 +269,7 @@ public class FDroidApp extends Application implements androidx.work.Configuratio
      * @see #getTimeout()
      * @see Repo#getRandomMirror(String)
      */
-    public static String getNewMirrorOnError(@Nullable String urlString, Repo repo2) throws IOException {
+    public static synchronized String getNewMirrorOnError(@Nullable String urlString, Repo repo2) throws IOException {
         if (repo2.hasMirrors()) {
             if (numTries <= 0) {
                 if (timeout == Downloader.DEFAULT_TIMEOUT) {
@@ -393,7 +394,8 @@ public class FDroidApp extends Application implements androidx.work.Configuratio
 
         PRNGFixes.apply();
 
-        curTheme = preferences.getTheme();
+        applyTheme();
+
         configureProxy(preferences);
 
 

app/src/main/java/org/fdroid/fdroid/IndexUpdater.java

@@ -27,9 +27,9 @@ import android.content.ContentResolver;
 import android.content.ContentValues;
 import android.content.Context;
 import android.content.pm.PackageInfo;
-import androidx.annotation.NonNull;
 import android.text.TextUtils;
 import android.util.Log;
+
 import org.fdroid.fdroid.data.Apk;
 import org.fdroid.fdroid.data.ApkProvider;
 import org.fdroid.fdroid.data.App;
@@ -48,9 +48,6 @@ import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;
 import org.xml.sax.XMLReader;
 
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.parsers.SAXParser;
-import javax.xml.parsers.SAXParserFactory;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
@@ -64,6 +61,12 @@ import java.util.List;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import androidx.annotation.NonNull;
+
 // TODO move to org.fdroid.fdroid.updater
 // TODO reduce visibility of methods once in .updater package (.e.g tests need it public now)
 

app/src/main/java/org/fdroid/fdroid/IndexV1Updater.java

@@ -25,9 +25,9 @@ package org.fdroid.fdroid;
 import android.content.ContentValues;
 import android.content.Context;
 import android.content.pm.PackageInfo;
-import androidx.annotation.NonNull;
 import android.text.TextUtils;
 import android.util.Log;
+
 import com.fasterxml.jackson.annotation.JsonAutoDetect;
 import com.fasterxml.jackson.annotation.PropertyAccessor;
 import com.fasterxml.jackson.core.JsonFactory;
@@ -36,6 +36,7 @@ import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.InjectableValues;
 import com.fasterxml.jackson.databind.ObjectMapper;
+
 import org.apache.commons.io.FileUtils;
 import org.fdroid.fdroid.data.Apk;
 import org.fdroid.fdroid.data.App;
@@ -47,10 +48,6 @@ import org.fdroid.fdroid.data.Schema;
 import org.fdroid.fdroid.net.Downloader;
 import org.fdroid.fdroid.net.DownloaderFactory;
 
-import javax.net.ssl.SSLHandshakeException;
-import javax.net.ssl.SSLKeyException;
-import javax.net.ssl.SSLPeerUnverifiedException;
-import javax.net.ssl.SSLProtocolException;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
@@ -71,6 +68,13 @@ import java.util.Map;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 
+import javax.net.ssl.SSLHandshakeException;
+import javax.net.ssl.SSLKeyException;
+import javax.net.ssl.SSLPeerUnverifiedException;
+import javax.net.ssl.SSLProtocolException;
+
+import androidx.annotation.NonNull;
+
 /**
  * Receives the index data about all available apps and packages via the V1
  * JSON data {@link #DATA_FILE_NAME}, embedded in a signed jar

app/src/main/java/org/fdroid/fdroid/Languages.java

@@ -8,8 +8,6 @@ import android.content.res.Resources;
 import android.os.Build;
 import android.text.TextUtils;
 
-import androidx.appcompat.app.AppCompatActivity;
-
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
@@ -18,6 +16,8 @@ import java.util.Map;
 import java.util.Set;
 import java.util.TreeMap;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public final class Languages {
     public static final String TAG = "Languages";
 

app/src/main/java/org/fdroid/fdroid/NfcHelper.java

@@ -1,7 +1,6 @@
 package org.fdroid.fdroid;
 
 import android.annotation.TargetApi;
-import androidx.appcompat.app.AppCompatActivity;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
@@ -12,6 +11,8 @@ import android.nfc.NfcAdapter;
 import android.os.Build;
 import android.util.Log;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public class NfcHelper {
 
     private static final String TAG = "NfcHelper";

app/src/main/java/org/fdroid/fdroid/NfcNotEnabledActivity.java

@@ -6,6 +6,7 @@ import android.nfc.NfcAdapter;
 import android.os.Build;
 import android.os.Bundle;
 import android.provider.Settings;
+
 import androidx.appcompat.app.AppCompatActivity;
 
 // aka Android 4.0 aka Ice Cream Sandwich
@@ -39,8 +40,9 @@ public class NfcNotEnabledActivity extends AppCompatActivity {
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
+        FDroidApp fdroidApp = (FDroidApp) getApplication();
+        fdroidApp.applyPureBlackBackgroundInDarkTheme(this);
 
-        ((FDroidApp) getApplication()).applyTheme(this);
         super.onCreate(savedInstanceState);
 
         final Intent intent = new Intent();

app/src/main/java/org/fdroid/fdroid/NotificationHelper.java

@@ -20,11 +20,6 @@ import android.text.TextUtils;
 import android.text.style.StyleSpan;
 import android.view.View;
 
-import androidx.core.app.NotificationCompat;
-import androidx.core.app.NotificationManagerCompat;
-import androidx.core.content.ContextCompat;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-
 import com.nostra13.universalimageloader.core.ImageLoader;
 import com.nostra13.universalimageloader.core.assist.FailReason;
 import com.nostra13.universalimageloader.core.assist.ImageSize;
@@ -38,6 +33,11 @@ import org.fdroid.fdroid.views.main.MainActivity;
 import java.util.ArrayList;
 import java.util.Arrays;
 
+import androidx.core.app.NotificationCompat;
+import androidx.core.app.NotificationManagerCompat;
+import androidx.core.content.ContextCompat;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+
 @SuppressWarnings("LineLength")
 public class NotificationHelper {
     public static final String CHANNEL_SWAPS = "swap-channel";

app/src/main/java/org/fdroid/fdroid/Preferences.java

@@ -30,8 +30,7 @@ import android.net.NetworkInfo;
 import android.os.Build;
 import android.text.format.DateUtils;
 import android.util.Log;
-import androidx.core.content.ContextCompat;
+
-import androidx.preference.PreferenceManager;
 import org.fdroid.fdroid.installer.PrivilegedInstaller;
 import org.fdroid.fdroid.net.ConnectivityMonitorService;
 
@@ -44,6 +43,9 @@ import java.util.Random;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
+import androidx.core.content.ContextCompat;
+import androidx.preference.PreferenceManager;
+
 /**
  * Handles shared preferences for FDroid, looking after the names of
  * preferences, default values and caching. Needs to be setup in the FDroidApp
@@ -87,6 +89,7 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
     public static final String PREF_AUTO_DOWNLOAD_INSTALL_UPDATES = "updateAutoDownload";
     public static final String PREF_UPDATE_NOTIFICATION_ENABLED = "updateNotify";
     public static final String PREF_THEME = "theme";
+    public static final String PREF_USE_PURE_BLACK_DARK_THEME = "usePureBlackDarkTheme";
     public static final String PREF_SHOW_INCOMPAT_VERSIONS = "incompatibleVersions";
     public static final String PREF_SHOW_ANTI_FEATURE_APPS = "showAntiFeatureApps";
     public static final String PREF_FORCE_TOUCH_APPS = "ignoreTouchscreen";
@@ -151,7 +154,8 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
     public enum Theme {
         light,
         dark,
-        night,
+        followSystem,
+        night, // Obsolete
         lightWithDarkActionBar, // Obsolete
     }
 
@@ -395,6 +399,10 @@ public final class Preferences implements SharedPreferences.OnSharedPreferenceCh
         return Theme.valueOf(preferences.getString(Preferences.PREF_THEME, null));
     }
 
+    public boolean isPureBlack() {
+        return preferences.getBoolean(Preferences.PREF_USE_PURE_BLACK_DARK_THEME, false);
+    }
+
     public boolean isLocalRepoHttpsEnabled() {
         return false; // disabled until it works well
     }

app/src/main/java/org/fdroid/fdroid/ProgressBufferedInputStream.java

@@ -1,11 +1,11 @@
 package org.fdroid.fdroid;
 
-import androidx.annotation.NonNull;
-
 import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 
+import androidx.annotation.NonNull;
+
 class ProgressBufferedInputStream extends BufferedInputStream {
 
     private final ProgressListener progressListener;
@@ -24,7 +24,7 @@ class ProgressBufferedInputStream extends BufferedInputStream {
     }
 
     @Override
-    public int read(@NonNull byte[] buffer, int byteOffset, int byteCount) throws IOException {
+    public synchronized int read(@NonNull byte[] buffer, int byteOffset, int byteCount) throws IOException {
         if (progressListener != null) {
             currentBytes += byteCount;
             /* don't send every change to keep things efficient.  333333 bytes to keep all

app/src/main/java/org/fdroid/fdroid/Provisioner.java

@@ -4,7 +4,9 @@ import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.util.Base64;
+
 import com.fasterxml.jackson.databind.ObjectMapper;
+
 import org.apache.commons.io.IOUtils;
 import org.fdroid.fdroid.data.Repo;
 import org.fdroid.fdroid.data.RepoProvider;

app/src/main/java/org/fdroid/fdroid/UpdateService.java

@@ -30,7 +30,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.net.Uri;
-import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Process;
 import android.os.SystemClock;
@@ -38,12 +37,6 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Toast;
 
-import androidx.annotation.NonNull;
-import androidx.core.app.JobIntentService;
-import androidx.core.app.NotificationCompat;
-import androidx.core.content.ContextCompat;
-import androidx.localbroadcastmanager.content.LocalBroadcastManager;
-
 import org.fdroid.fdroid.data.Apk;
 import org.fdroid.fdroid.data.ApkProvider;
 import org.fdroid.fdroid.data.App;
@@ -57,9 +50,18 @@ import org.fdroid.fdroid.installer.InstallManagerService;
 import org.fdroid.fdroid.net.BluetoothDownloader;
 import org.fdroid.fdroid.net.ConnectivityMonitorService;
 
-import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import androidx.annotation.NonNull;
+import androidx.core.app.JobIntentService;
+import androidx.core.app.NotificationCompat;
+import androidx.core.content.ContextCompat;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.Completable;
+import io.reactivex.rxjava3.schedulers.Schedulers;
 
 public class UpdateService extends JobIntentService {
 
@@ -81,6 +83,13 @@ public class UpdateService extends JobIntentService {
     public static final int STATUS_ERROR_LOCAL_SMALL = 4;
     public static final int STATUS_INFO = 5;
 
+    /**
+     * This number should never change, it is used by ROMs to trigger
+     * the first background update of F-Droid during setup.
+     *
+     * @see <a href="https://gitlab.com/fdroid/fdroidclient/-/issues/2147">Add a way to trigger an index update externally</a>
+     * @see <a href="https://review.calyxos.org/c/CalyxOS/platform_packages_apps_SetupWizard/+/3461"/>Schedule F-Droid index update on initialization and network connection</a>
+     */
     private static final int JOB_ID = 0xfedcba;
 
     private static final int NOTIFY_ID_UPDATING = 0;
@@ -208,42 +217,30 @@ public class UpdateService extends JobIntentService {
      * unlimited networks over metered networks for index updates and auto
      * downloads of app updates. Starting with {@code android-21}, this uses
      * {@link android.app.job.JobScheduler} instead.
+     *
+     * @return a {@link Completable} that schedules the update. If this process is already running,
+     * a {@code Completable} that completes immediately is returned.
      */
-    public static void scheduleIfStillOnWifi(Context context) {
+    @NonNull
+    public static Completable scheduleIfStillOnWifi(Context context) {
         if (Build.VERSION.SDK_INT >= 21) {
             throw new IllegalStateException("This should never be used on android-21 or newer!");
         }
         if (isScheduleIfStillOnWifiRunning || !Preferences.get().isBackgroundDownloadAllowed()) {
-            return;
+            return Completable.complete();
         }
         isScheduleIfStillOnWifiRunning = true;
-        new StillOnWifiAsyncTask(context).execute();
-    }
-
-    private static final class StillOnWifiAsyncTask extends AsyncTask<Void, Void, Void> {
-
-        private final WeakReference<Context> contextWeakReference;
-
-        private StillOnWifiAsyncTask(Context context) {
-            this.contextWeakReference = new WeakReference<>(context);
-        }
-
-        @Override
-        protected Void doInBackground(Void... voids) {
-            Context context = contextWeakReference.get();
-            try {
-                Thread.sleep(120000);
-                if (Preferences.get().isBackgroundDownloadAllowed()) {
-                    Utils.debugLog(TAG, "scheduling update because there is good internet");
-                    schedule(context);
-                }
-            } catch (Throwable e) { // NOPMD
-                Utils.debugLog(TAG, e.getMessage());
-            }
-            isScheduleIfStillOnWifiRunning = false;
-            return null;
-        }
 
+        return Completable.timer(2, TimeUnit.MINUTES)
+                .andThen(Completable.fromAction(() -> {
+                    if (Preferences.get().isBackgroundDownloadAllowed()) {
+                        Utils.debugLog(TAG, "scheduling update because there is good internet");
+                        schedule(context);
+                    }
+                    isScheduleIfStillOnWifiRunning = false;
+                }))
+                .subscribeOn(Schedulers.computation())
+                .observeOn(AndroidSchedulers.mainThread());
     }
 
     public static void stopNow(Context context) {
@@ -253,6 +250,37 @@ public class UpdateService extends JobIntentService {
         }
     }
 
+    /**
+     * Return a {@link List} of all {@link Repo}s that have either a local
+     * canonical URL or a local mirror URL.  These are repos that can be
+     * updated and used without using the Internet.
+     */
+    public static List<Repo> getLocalRepos(Context context) {
+        return getLocalRepos(RepoProvider.Helper.all(context));
+    }
+
+    /**
+     * Return the repos in the {@code repos} {@link List} that have either a
+     * local canonical URL or a local mirror URL.  These are repos that can be
+     * updated and used without using the Internet.
+     */
+    public static List<Repo> getLocalRepos(List<Repo> repos) {
+        ArrayList<Repo> localRepos = new ArrayList<>();
+        for (Repo repo : repos) {
+            if (isLocalRepoAddress(repo.address)) {
+                localRepos.add(repo);
+            } else {
+                for (String mirrorAddress : repo.getMirrorList()) {
+                    if (isLocalRepoAddress(mirrorAddress)) {
+                        localRepos.add(repo);
+                        break;
+                    }
+                }
+            }
+        }
+        return localRepos;
+    }
+
     @Override
     public void onCreate() {
         super.onCreate();
@@ -264,7 +292,7 @@ public class UpdateService extends JobIntentService {
                 .setSmallIcon(R.drawable.ic_refresh)
                 .setOngoing(true)
                 .setCategory(NotificationCompat.CATEGORY_SERVICE)
-                .setContentTitle(getString(R.string.update_notification_title));
+                .setContentTitle(getString(R.string.banner_updating_repositories));
         appUpdateStatusManager = AppUpdateStatusManager.getInstance(this);
     }
 
@@ -404,22 +432,11 @@ public class UpdateService extends JobIntentService {
             if (isLocalRepoAddress(address)) {
                 Utils.debugLog(TAG, "skipping internet check, this is local: " + address);
             } else if (netState == ConnectivityMonitorService.FLAG_NET_UNAVAILABLE) {
-                boolean foundLocalRepo = false;
+                // keep track of repos that have a local copy in case internet is not available
-                for (Repo repo : repos) {
+                List<Repo> localRepos = getLocalRepos(repos);
-                    if (isLocalRepoAddress(repo.address)) {
+                if (localRepos.size() > 0) {
-                        foundLocalRepo = true;
+                    repos = localRepos;
-                    } else {
+                } else {
-                        for (String mirrorAddress : repo.getMirrorList()) {
-                            if (isLocalRepoAddress(mirrorAddress)) {
-                                foundLocalRepo = true;
-                                //localRepos.add(repo);
-                                //FDroidApp.setLastWorkingMirror(repo.getId(), mirrorAddress);
-                                break;
-                            }
-                        }
-                    }
-                }
-                if (!foundLocalRepo) {
                     Utils.debugLog(TAG, "No internet, cannot update");
                     if (manualUpdate) {
                         Utils.showToastFromService(this, getString(R.string.warning_no_internet), Toast.LENGTH_SHORT);

app/src/main/java/org/fdroid/fdroid/Utils.java

@@ -27,6 +27,7 @@ import android.content.pm.Signature;
 import android.content.res.Resources;
 import android.database.Cursor;
 import android.graphics.Bitmap;
+import android.graphics.Point;
 import android.graphics.Rect;
 import android.net.Uri;
 import android.os.Build;
@@ -44,19 +45,21 @@ import android.text.style.TypefaceSpan;
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.util.TypedValue;
+import android.view.Display;
 import android.view.View;
 import android.view.ViewTreeObserver;
 import android.widget.ImageView;
 import android.widget.Toast;
-import androidx.annotation.NonNull;
+
-import androidx.annotation.Nullable;
+import com.google.zxing.BarcodeFormat;
-import androidx.annotation.RequiresApi;
+import com.google.zxing.encode.Contents;
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+import com.google.zxing.encode.QRCodeEncoder;
 import com.nostra13.universalimageloader.core.DisplayImageOptions;
 import com.nostra13.universalimageloader.core.ImageLoader;
 import com.nostra13.universalimageloader.core.assist.ImageScaleType;
 import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
 import com.nostra13.universalimageloader.utils.StorageUtils;
+
 import org.fdroid.fdroid.compat.FileCompat;
 import org.fdroid.fdroid.data.App;
 import org.fdroid.fdroid.data.Repo;
@@ -94,6 +97,15 @@ import java.util.TimeZone;
 import java.util.concurrent.TimeUnit;
 import java.util.regex.Pattern;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.Single;
+import io.reactivex.rxjava3.schedulers.Schedulers;
+
 public final class Utils {
 
     private static final String TAG = "Utils";
@@ -480,12 +492,7 @@ public final class Utils {
      */
     public static DisplayImageOptions.Builder getDefaultDisplayImageOptionsBuilder() {
         if (defaultDisplayImageOptionsBuilder == null) {
-            defaultDisplayImageOptionsBuilder = new DisplayImageOptions.Builder()
+            defaultDisplayImageOptionsBuilder = createDefaultDisplayImageOptionsBuilder();
-                    .cacheInMemory(true)
-                    .cacheOnDisk(true)
-                    .considerExifParams(false)
-                    .bitmapConfig(Bitmap.Config.RGB_565)
-                    .imageScaleType(ImageScaleType.EXACTLY);
         }
         return defaultDisplayImageOptionsBuilder;
     }
@@ -497,7 +504,7 @@ public final class Utils {
      */
     public static DisplayImageOptions getRepoAppDisplayImageOptions() {
         if (repoAppDisplayImageOptions == null) {
-            repoAppDisplayImageOptions = getDefaultDisplayImageOptionsBuilder()
+            repoAppDisplayImageOptions = createDefaultDisplayImageOptionsBuilder()
                     .showImageOnLoading(R.drawable.ic_repo_app_default)
                     .showImageForEmptyUri(R.drawable.ic_repo_app_default)
                     .showImageOnFail(R.drawable.ic_repo_app_default)
@@ -507,6 +514,15 @@ public final class Utils {
         return repoAppDisplayImageOptions;
     }
 
+    private static DisplayImageOptions.Builder createDefaultDisplayImageOptionsBuilder() {
+        return new DisplayImageOptions.Builder()
+                .cacheInMemory(true)
+                .cacheOnDisk(true)
+                .considerExifParams(false)
+                .bitmapConfig(Bitmap.Config.RGB_565)
+                .imageScaleType(ImageScaleType.EXACTLY);
+    }
+
     /**
      * If app has an iconUrl we feed that to UIL, otherwise we ask the PackageManager which will
      * return the app's icon directly when the app is installed.
@@ -979,6 +995,27 @@ public final class Utils {
         }
     }
 
+    @NonNull
+    public static Single<Bitmap> generateQrBitmap(@NonNull final AppCompatActivity activity,
+                                                  @NonNull final String qrData) {
+        return Single.fromCallable(() -> {
+            Display display = activity.getWindowManager().getDefaultDisplay();
+            Point outSize = new Point();
+            display.getSize(outSize);
+            final int x = outSize.x;
+            final int y = outSize.y;
+            final int qrCodeDimension = Math.min(x, y);
+            debugLog(TAG, "generating QRCode Bitmap of " + qrCodeDimension + "x" + qrCodeDimension);
+            QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(qrData, null,
+                    Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(), qrCodeDimension);
+
+            return qrCodeEncoder.encodeAsBitmap();
+        })
+                .subscribeOn(Schedulers.computation())
+                .observeOn(AndroidSchedulers.mainThread())
+                .doOnError(throwable -> Log.e(TAG, "Could not encode QR as bitmap", throwable));
+    }
+
     /**
      * Keep an instance of this class as an field in an AppCompatActivity for figuring out whether the on
      * screen keyboard is currently visible or not.

app/src/main/java/org/fdroid/fdroid/acra/CrashReportActivity.java

@@ -2,12 +2,15 @@ package org.fdroid.fdroid.acra;
 
 import android.content.DialogInterface;
 import android.os.Bundle;
-import androidx.appcompat.app.AlertDialog;
 import android.widget.EditText;
 
 import org.acra.dialog.BaseCrashReportDialog;
 import org.fdroid.fdroid.R;
 
+import androidx.appcompat.app.AlertDialog;
+
+import com.google.android.material.textfield.TextInputLayout;
+
 public class CrashReportActivity extends BaseCrashReportDialog
         implements DialogInterface.OnDismissListener, DialogInterface.OnClickListener {
 
@@ -29,7 +32,8 @@ public class CrashReportActivity extends BaseCrashReportDialog
         dialog.setOnDismissListener(this);
         dialog.show();
 
-        comment = (EditText) dialog.findViewById(android.R.id.input);
+        TextInputLayout commentLayout = dialog.findViewById(android.R.id.input);
+        comment = commentLayout.getEditText();
         if (savedInstanceState != null) {
             comment.setText(savedInstanceState.getString(STATE_COMMENT));
         }

app/src/main/java/org/fdroid/fdroid/acra/CrashReportSender.java

@@ -4,13 +4,15 @@ package org.fdroid.fdroid.acra;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
-import androidx.annotation.NonNull;
+
 import org.acra.ReportField;
 import org.acra.collections.ImmutableSet;
 import org.acra.collector.CrashReportData;
 import org.acra.config.ACRAConfiguration;
 import org.acra.sender.ReportSender;
 
+import androidx.annotation.NonNull;
+
 public class CrashReportSender implements ReportSender {
 
     private final ACRAConfiguration config;

app/src/main/java/org/fdroid/fdroid/acra/CrashReportSenderFactory.java

@@ -1,12 +1,13 @@
 package org.fdroid.fdroid.acra;
 
 import android.content.Context;
-import androidx.annotation.NonNull;
 
 import org.acra.config.ACRAConfiguration;
 import org.acra.sender.ReportSender;
 import org.acra.sender.ReportSenderFactory;
 
+import androidx.annotation.NonNull;
+
 public class CrashReportSenderFactory implements ReportSenderFactory {
     @NonNull
     @Override

app/src/main/java/org/fdroid/fdroid/compat/FileCompat.java

@@ -5,8 +5,6 @@ import android.os.Build;
 import android.system.ErrnoException;
 import android.util.Log;
 
-import androidx.annotation.RequiresApi;
-
 import org.fdroid.fdroid.FDroidApp;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.data.SanitizedFile;
@@ -14,6 +12,8 @@ import org.fdroid.fdroid.data.SanitizedFile;
 import java.io.IOException;
 import java.lang.reflect.Method;
 
+import androidx.annotation.RequiresApi;
+
 /**
  * This class works only with {@link SanitizedFile} instances to enforce
  * filtering of the file names from files downloaded from the internet.

app/src/main/java/org/fdroid/fdroid/data/Apk.java

@@ -12,11 +12,11 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
 import android.webkit.MimeTypeMap;
-import androidx.annotation.NonNull;
+
-import androidx.annotation.Nullable;
 import com.fasterxml.jackson.annotation.JacksonInject;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
+
 import org.fdroid.fdroid.BuildConfig;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.data.Schema.ApkTable.Cols;
@@ -30,6 +30,9 @@ import java.util.HashSet;
 import java.util.Locale;
 import java.util.zip.ZipFile;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
 /**
  * Represents a single package of an application. This represents one particular
  * package of a given application, for info about the app in general, see