Merge branch 'suite-of-crash-fixes' into 'master'

Suite of crash fixes

See merge request fdroid/fdroidclient!810

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

@@ -60,8 +60,17 @@ class MainViewController extends RecyclerView.ViewHolder {
         new CategoriesViewBinder(activity, frame);
     }
 
+    /**
+     * {@link android.os.Environment#isExternalStorageRemovable()} sometimes
+     * throughs {@link IllegalArgumentException}s when it can't find the
+     * storage.
+     */
     public void bindSwapView() {
+        try {
             new NearbyViewBinder(activity, frame);
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        }
     }
 
     /**

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

@@ -81,8 +81,6 @@ class NearbyViewBinder {
         });
 
         if (Build.VERSION.SDK_INT >= 21) {
-            Log.i(TAG, "Environment.isExternalStorageRemovable(activity.getExternalFilesDir(\"\")) " +
-                    Environment.isExternalStorageRemovable(activity.getExternalFilesDir("")));
             File[] dirs = activity.getExternalFilesDirs("");
             if (dirs != null) {
                 for (File dir : dirs) {

app/src/full/java/org/fdroid/fdroid/views/swap/SwapAppsView.java

@@ -288,9 +288,9 @@ public class SwapAppsView extends ListView implements
                 @Override
                 public void onChange(boolean selfChange) {
                     Activity activity = getActivity();
-                    if (activity != null) {
+                    if (activity != null && app != null) {
                         app = AppProvider.Helper.findSpecificApp(
-                                getActivity().getContentResolver(),
+                                activity.getContentResolver(),
                                 app.packageName,
                                 app.repoId,
                                 AppMetadataTable.Cols.ALL);

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

@@ -19,7 +19,6 @@
 package org.fdroid.fdroid;
 
 import android.app.AlarmManager;
-import android.app.IntentService;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.job.JobInfo;
@@ -33,8 +32,6 @@ import android.content.IntentFilter;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Build;
-import android.os.Handler;
-import android.os.Looper;
 import android.os.Process;
 import android.os.SystemClock;
 import android.support.annotation.NonNull;
@@ -87,7 +84,6 @@ public class UpdateService extends JobIntentService {
     private static final int NOTIFY_ID_UPDATING = 0;
 
     private static UpdateService updateService;
-    private static Handler toastHandler;
 
     private NotificationManager notificationManager;
     private NotificationCompat.Builder notificationBuilder;
@@ -391,22 +387,6 @@ public class UpdateService extends JobIntentService {
         }
     }
 
-    /**
-     * In order to send a {@link Toast} from a {@link IntentService}, we have to do these tricks.
-     */
-    private void sendNoInternetToast() {
-        if (toastHandler == null) {
-            toastHandler = new Handler(Looper.getMainLooper());
-        }
-        toastHandler.post(new Runnable() {
-            @Override
-            public void run() {
-                Toast.makeText(getApplicationContext(),
-                        R.string.warning_no_internet, Toast.LENGTH_SHORT).show();
-            }
-        });
-    }
-
     private static boolean isLocalRepoAddress(String address) {
         return address != null &&
                 (address.startsWith(BluetoothDownloader.SCHEME)
@@ -453,7 +433,7 @@ public class UpdateService extends JobIntentService {
                 if (!foundLocalRepo) {
                     Utils.debugLog(TAG, "No internet, cannot update");
                     if (manualUpdate) {
-                        sendNoInternetToast();
+                        Utils.showToastFromService(this, getString(R.string.warning_no_internet), Toast.LENGTH_SHORT);
                     }
                     return;
                 }

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

@@ -27,6 +27,8 @@ import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Build;
+import android.os.Handler;
+import android.os.Looper;
 import android.os.StatFs;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
@@ -42,6 +44,7 @@ import android.text.style.TypefaceSpan;
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.util.TypedValue;
+import android.widget.Toast;
 import com.nostra13.universalimageloader.core.DisplayImageOptions;
 import com.nostra13.universalimageloader.core.assist.ImageScaleType;
 import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
@@ -101,6 +104,8 @@ public final class Utils {
 
     private static Pattern safePackageNamePattern;
 
+    private static Handler toastHandler;
+
     public static final String FALLBACK_ICONS_DIR = "/icons/";
 
     /*
@@ -578,7 +583,8 @@ public final class Utils {
         Date result;
         try {
             result = format.parse(str);
-        } catch (ParseException e) {
+        } catch (ArrayIndexOutOfBoundsException | NumberFormatException | ParseException e) {
+            e.printStackTrace();
             result = fallback;
         }
         return result;
@@ -839,4 +845,21 @@ public final class Utils {
             Utils.debugLog(logTag, "[" + duration + "ms] " + message);
         }
     }
+
+    /**
+     * In order to send a {@link Toast} from a {@link android.app.Service}, we
+     * have to do these tricks.
+     */
+    public static void showToastFromService(final Context context, final String msg, final int length) {
+        if (toastHandler == null) {
+            toastHandler = new Handler(Looper.getMainLooper());
+        }
+        toastHandler.post(new Runnable() {
+
+            @Override
+            public void run() {
+                Toast.makeText(context.getApplicationContext(), msg, length).show();
+            }
+        });
+    }
 }

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

@@ -1112,7 +1112,10 @@ public class App extends ValueObject implements Comparable<App>, Parcelable {
                 }
                 eventType = xml.nextToken();
             }
-        } catch (PackageManager.NameNotFoundException | IOException | XmlPullParserException e) {
+        } catch (PackageManager.NameNotFoundException
+                | IOException
+                | XmlPullParserException
+                | NumberFormatException e) {
             Log.e(TAG, "Could not get min/max sdk version", e);
         }
         if (targetSdkVersion < minSdkVersion) {

app/src/main/java/org/fdroid/fdroid/views/main/MainActivity.java

@@ -57,6 +57,7 @@ import org.fdroid.fdroid.UpdateService;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.data.NewRepoConfig;
 import org.fdroid.fdroid.localrepo.SDCardScannerService;
+import org.fdroid.fdroid.net.WifiStateChangeService;
 import org.fdroid.fdroid.views.AppDetailsActivity;
 import org.fdroid.fdroid.views.ManageReposActivity;
 import org.fdroid.fdroid.views.apps.AppListActivity;
@@ -249,6 +250,7 @@ public class MainActivity extends AppCompatActivity implements BottomNavigationB
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { // NOCHECKSTYLE LineLength
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
         if (requestCode == REQUEST_LOCATION_PERMISSIONS) {
+            WifiStateChangeService.start(this, null);
             startActivity(new Intent(this, SwapWorkflowActivity.class));
         } else if (requestCode == REQUEST_STORAGE_PERMISSIONS) {
             Toast.makeText(this,