No feedback when attempting to transfer to an unpowered BT device

-Set title and subtitle when connecting state changes
-Add test cases

Bug: 152606143
Test: make -j42 RunSettingsRoboTests
Change-Id: I1c482e8f45752d658d7898de760594fd3ec7164d

src/com/android/settings/media/MediaOutputSlice.java

@@ -197,6 +197,8 @@ public class MediaOutputSlice implements CustomSliceable {
                 }
                 listBuilder.addInputRange(builder);
             } else {
+                Log.d(TAG, "addRow device = " + device.getName() + " MaxVolume = "
+                        + device.getMaxVolume());
                 final ListBuilder.RowBuilder builder = getMediaDeviceRow(device);
                 // Check end item visibility
                 if (device.getDeviceType() == MediaDevice.MediaDeviceType.TYPE_CAST_DEVICE
@@ -266,16 +268,24 @@ public class MediaOutputSlice implements CustomSliceable {
 
         if (device.getDeviceType() == MediaDevice.MediaDeviceType.TYPE_BLUETOOTH_DEVICE
                 && !device.isConnected()) {
+            if (device.getState() == LocalMediaManager.MediaDeviceState.STATE_CONNECTING) {
+                rowBuilder.setTitle(deviceName);
+                rowBuilder.setPrimaryAction(SliceAction.create(broadcastAction, deviceIcon,
+                        ListBuilder.ICON_IMAGE, deviceName));
+                rowBuilder.setSubtitle(mContext.getText(R.string.media_output_switching));
+            } else {
                 // Append status to title only for the disconnected Bluetooth device.
                 final SpannableString spannableTitle = new SpannableString(
                         mContext.getString(R.string.media_output_disconnected_status, deviceName));
                 spannableTitle.setSpan(new ForegroundColorSpan(
-                    Utils.getColorAttrDefaultColor(mContext, android.R.attr.textColorSecondary)),
+                                Utils.getColorAttrDefaultColor(mContext,
+                                        android.R.attr.textColorSecondary)),
                         deviceName.length(),
                         spannableTitle.length(), SPAN_EXCLUSIVE_EXCLUSIVE);
                 rowBuilder.setTitle(spannableTitle);
                 rowBuilder.setPrimaryAction(SliceAction.create(broadcastAction, deviceIcon,
                         ListBuilder.ICON_IMAGE, spannableTitle));
+            }
         } else {
             rowBuilder.setTitle(deviceName);
             rowBuilder.setPrimaryAction(SliceAction.create(broadcastAction, deviceIcon,

tests/robotests/src/com/android/settings/media/MediaOutputSliceTest.java

@@ -473,6 +473,43 @@ public class MediaOutputSliceTest {
                 R.string.bluetooth_pairing_pref_title))).isEqualTo(-1);
     }
 
+    @Test
+    public void getSlice_disconnectedBtOnTransferring_containTransferringSubtitle() {
+        final List<MediaDevice> mSelectedDevices = new ArrayList<>();
+        final List<MediaDevice> mSelectableDevices = new ArrayList<>();
+        mDevices.clear();
+        final MediaDevice device = mock(MediaDevice.class);
+        when(device.getName()).thenReturn(TEST_DEVICE_1_NAME);
+        when(device.getIcon()).thenReturn(mTestDrawable);
+        when(device.getMaxVolume()).thenReturn(100);
+        when(device.isConnected()).thenReturn(true);
+        when(device.getDeviceType()).thenReturn(MediaDevice.MediaDeviceType.TYPE_BLUETOOTH_DEVICE);
+        when(device.getId()).thenReturn(TEST_DEVICE_1_ID);
+        final MediaDevice device2 = mock(MediaDevice.class);
+        when(device2.getName()).thenReturn(TEST_DEVICE_2_NAME);
+        when(device2.getIcon()).thenReturn(mTestDrawable);
+        when(device2.getMaxVolume()).thenReturn(100);
+        when(device2.isConnected()).thenReturn(false);
+        when(device2.getState()).thenReturn(LocalMediaManager.MediaDeviceState.STATE_CONNECTING);
+        when(device2.getDeviceType()).thenReturn(MediaDevice.MediaDeviceType.TYPE_BLUETOOTH_DEVICE);
+        when(device2.getId()).thenReturn(TEST_DEVICE_2_ID);
+        mSelectedDevices.add(device);
+        mSelectableDevices.add(device2);
+        when(mLocalMediaManager.getCurrentConnectedDevice()).thenReturn(device);
+        mDevices.add(device);
+        mDevices.add(device2);
+        when(mLocalMediaManager.getSelectedMediaDevice()).thenReturn(mSelectedDevices);
+        when(mLocalMediaManager.getSelectableMediaDevice()).thenReturn(mSelectableDevices);
+        mMediaDeviceUpdateWorker.onDeviceListUpdate(mDevices);
+
+        final Slice mediaSlice = mMediaOutputSlice.getSlice();
+        final String sliceInfo = SliceQuery.findAll(mediaSlice, FORMAT_SLICE, HINT_LIST_ITEM,
+                null).toString();
+
+        assertThat(TextUtils.indexOf(sliceInfo, mContext.getText(R.string.media_output_switching)))
+                .isNotEqualTo(-1);
+    }
+
     @Test
     public void onNotifyChange_foundMediaDevice_connect() {
         mDevices.clear();