WIP: Making 'scan' UI more solid

F-Droid/res/layout/swap_bluetooth_header.xml

@@ -12,42 +12,50 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/device_name_prefix"
-            android:text="Your device is"
+            android:text="@string/swap_bluetooth_your_device"
-            tools:text="Your device is"
+            android:gravity="center_horizontal"
-            android:textAlignment="center"
+            style="@style/SwapTheme.BluetoothDeviceList.Heading"
-            style="@style/SwapTheme.BluetoothDeviceList.Heading" android:paddingTop="10dp"
+            android:paddingTop="10dp"
-            android:paddingBottom="10dp" android:textSize="24sp"/>
+            android:paddingBottom="10dp"
+            android:textSize="24sp"/>
 
     <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/device_name"
-            android:text="Pete's Nexus 4"
+            tools:text="Phone v2.0"
-            tools:text="Pete's Nexus 4"
+            android:gravity="center_horizontal"
-            android:textAlignment="center"
+            style="@style/SwapTheme.BluetoothDeviceList.Heading"
-            style="@style/SwapTheme.BluetoothDeviceList.Heading" android:paddingBottom="10dp"/>
+            android:paddingBottom="10dp"/>
 
     <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/device_address"
-            android:text="(01:02:03:ab:cd:ef)"
             tools:text="(01:02:03:ab:cd:ef)"
-            android:textAlignment="center"
+            android:gravity="center_horizontal"
-            style="@style/SwapTheme.BluetoothDeviceList.Heading" android:paddingBottom="20dp" android:textSize="24sp"/>
+            style="@style/SwapTheme.BluetoothDeviceList.Heading"
+            android:paddingBottom="20dp"
+            android:textSize="24sp"/>
 
     <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="Select from devices below, or tap here to scan for more devices..."
+            android:text="@string/swap_bluetooth_select_or_scan"
-            tools:text="Select from devices below, or tap here to scan for more devices..."
+            android:gravity="center_horizontal"
-            android:textAlignment="center"
+            style="@style/SwapTheme.BluetoothDeviceList.Text"
-            style="@style/SwapTheme.BluetoothDeviceList.Text" android:paddingLeft="20dp" android:paddingRight="20dp"
+            android:paddingLeft="20dp"
+            android:paddingRight="20dp"
             android:paddingBottom="10dp"/>
 
     <android.support.v4.widget.ContentLoadingProgressBar
-            android:layout_width="wrap_content"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:id="@+id/loading_indicator"/>
+            android:id="@+id/loading_indicator"
+            android:paddingLeft="5dp"
+            android:paddingRight="5dp"
+            android:visibility="gone"
+            android:indeterminate="true"
+            style="?android:attr/android:progressBarStyleHorizontal"/>
 
 </LinearLayout>

F-Droid/res/menu/swap_scan.xml

@@ -0,0 +1,14 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <item
+        android:id="@+id/action_scan"
+        android:title="Scan for devices"
+        android:titleCondensed="Scan"/>
+
+    <item
+        android:id="@+id/action_cancel"
+        android:title="Cancel scan"
+        android:titleCondensed="@string/cancel"
+        android:visible="false"/>
+
+</menu>

F-Droid/res/values/strings.xml

@@ -329,4 +329,6 @@
     <string name="wifi_warning_public">May work</string>
     <string name="wifi_warning_private">Promising</string>
     <string name="wifi_warning_personal">Best bet</string>
+    <string name="swap_bluetooth_your_device">Your device is</string>
+    <string name="swap_bluetooth_select_or_scan">Select from devices below, or press \"Scan\" from the menu to find more devices.</string>
 </resources>

F-Droid/res/values/styles.xml

@@ -46,10 +46,10 @@
     <style name="SwapTheme.StartSwap.Text" parent="@style/SwapTheme.StartSwap">
     </style>
 
-    <style name="SwapTheme.BluetoothDeviceList" parent="@style/SwapTheme.StartSwap">
+    <style name="SwapTheme.BluetoothDeviceList" parent="@style/SwapTheme.Wizard">
     </style>
 
-    <style name="SwapTheme.BluetoothDeviceList.ListItem" parent="AppThemeLightWithDarkActionBar">
+    <style name="SwapTheme.BluetoothDeviceList.ListItem" parent="AppThemeDark">
     </style>
 
     <style name="SwapTheme.BluetoothDeviceList.Text" parent="@style/SwapTheme.BluetoothDeviceList">

F-Droid/src/org/fdroid/fdroid/views/swap/BluetoothDeviceListFragment.java

@@ -7,10 +7,14 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
+import android.support.v4.view.MenuItemCompat;
 import android.support.v4.widget.ContentLoadingProgressBar;
 import android.util.Log;
 import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
@@ -29,14 +33,42 @@ import java.util.List;
 
 public class BluetoothDeviceListFragment extends ThemeableListFragment {
 
-    private static final String TAG = "org.fdroid.fdroid.views.swap.BluetoothDeviceListFragment";
+    private static final String TAG = "fdroid.BluetoothList";
 
     private Adapter adapter = null;
 
+    private MenuItem scanMenuItem;
+    private MenuItem cancelMenuItem;
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setHasOptionsMenu(false);
+        setHasOptionsMenu(true);
+    }
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
+        menuInflater.inflate(R.menu.swap_scan, menu);
+
+        final int flags = MenuItemCompat.SHOW_AS_ACTION_ALWAYS | MenuItemCompat.SHOW_AS_ACTION_WITH_TEXT;
+
+        scanMenuItem = menu.findItem(R.id.action_scan);
+        scanMenuItem.setVisible(true);
+        MenuItemCompat.setShowAsAction(scanMenuItem, flags);
+
+        cancelMenuItem = menu.findItem(R.id.action_cancel);
+        cancelMenuItem.setVisible(false);
+        MenuItemCompat.setShowAsAction(cancelMenuItem, flags);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == R.id.action_scan) {
+            initiateBluetoothScan();
+        } else if (item.getItemId() == R.id.action_cancel) {
+            cancelBluetoothScan();
+        }
+        return super.onOptionsItemSelected(item);
     }
 
     @Override
@@ -50,7 +82,7 @@ public class BluetoothDeviceListFragment extends ThemeableListFragment {
             R.layout.select_local_apps_list_item
         );
 
-        populateDeviceList();
+        populateBondedDevices();
 
         setListAdapter(adapter);
         setListShown(false); // start out with a progress indicator
@@ -63,25 +95,54 @@ public class BluetoothDeviceListFragment extends ThemeableListFragment {
         if (headerView == null) {
             Log.e(TAG, "Could not find header view, although we expected one to exist.");
         } else {
-            headerView.setOnTouchListener(new View.OnTouchListener() {
+            final BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
-                @Override
+
-                public boolean onTouch(View v, MotionEvent event) {
+            final TextView deviceName = (TextView)headerView.findViewById(R.id.device_name);
-                    initiateBluetoothScan();
+            deviceName.setText(bluetooth.getName());
-                    return true;
+
-                }
+            final TextView address = (TextView)headerView.findViewById(R.id.device_address);
-            });
+            address.setText(bluetooth.getAddress());
         }
         return view;
     }
 
+    private void cancelBluetoothScan() {
+
+        Log.d(TAG, "Cancelling bluetooth scan.");
+
+        cancelMenuItem.setVisible(false);
+        scanMenuItem.setVisible(true);
+
+        final BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
+        bluetooth.cancelDiscovery();
+
+        getLoadingIndicator().hide();
+
+    }
+
+    private ContentLoadingProgressBar getLoadingIndicator() {
+        return ((ContentLoadingProgressBar)getView().findViewById(R.id.loading_indicator));
+    }
+
     private void initiateBluetoothScan()
     {
-        BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
+        Log.d(TAG, "Starting bluetooth scan...");
-        BroadcastReceiver deviceFoundReceiver = new BroadcastReceiver() {
+
+        cancelMenuItem.setVisible(true);
+        scanMenuItem.setVisible(false);
+
+        final ContentLoadingProgressBar loadingBar = getLoadingIndicator();
+
+        loadingBar.show();
+
+
+        final BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
+        final BroadcastReceiver deviceFoundReceiver = new BroadcastReceiver() {
             @Override
             public void onReceive(Context context, Intent intent) {
                 if (BluetoothDevice.ACTION_FOUND.equals(intent.getAction())) {
                     BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+                    Log.d(TAG, "Found bluetooth device: " + device.toString());
                     boolean exists = false;
                     for (int i = 0; i < adapter.getCount(); i ++) {
                         if (adapter.getItem(i).getAddress().equals(device.getAddress())) {
@@ -97,8 +158,18 @@ public class BluetoothDeviceListFragment extends ThemeableListFragment {
             }
         };
 
-        ((ContentLoadingProgressBar)getView().findViewById(R.id.loading_indicator)).show();
+        final BroadcastReceiver scanCompleteReceiver = new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                Log.d(TAG, "Scan complete: " + intent.getAction());
+                loadingBar.hide();
+                cancelMenuItem.setVisible(false);
+                scanMenuItem.setVisible(true);
+            }
+        };
+
         getActivity().registerReceiver(deviceFoundReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));
+        getActivity().registerReceiver(scanCompleteReceiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED));
 
         if (!bluetooth.startDiscovery()) {
             // TODO: Discovery did not start for some reason :(
@@ -106,7 +177,7 @@ public class BluetoothDeviceListFragment extends ThemeableListFragment {
         }
     }
 
-    private void populateDeviceList()
+    private void populateBondedDevices()
     {
         for (BluetoothDevice device : BluetoothAdapter.getDefaultAdapter().getBondedDevices()) {
             adapter.add(device);
@@ -220,7 +291,7 @@ public class BluetoothDeviceListFragment extends ThemeableListFragment {
             TextView addressView = (TextView)view.findViewById(android.R.id.text2);
             TextView descriptionView = (TextView)view.findViewById(R.id.text3);
 
-            nameView.setText(device.getName());
+            nameView.setText(device.getName() == null ? getString(R.string.unknown) : device.getName());
             addressView.setText(device.getAddress());
             descriptionView.setText(bondStateToLabel(device.getBondState()));