Merge "Fix NPE in AudioSwitchPreferenceController" into main

src/com/android/settings/sound/AudioSwitchPreferenceController.java

@@ -242,6 +242,10 @@ public abstract class AudioSwitchPreferenceController extends BasePreferenceCont
             return connectedDevices;
         }
         final List<BluetoothDevice> devices = leAudioProfile.getConnectedDevices();
+        if (devices == null) {
+          Log.d(TAG, "No connected LeAudioProfile devices");
+          return connectedDevices;
+        }
         for (BluetoothDevice device : devices) {
             if (device.isConnected() && isDeviceInCachedList(device)) {
                 connectedDevices.add(device);

tests/robotests/src/com/android/settings/sound/AudioOutputSwitchPreferenceControllerTest.java

@@ -516,6 +516,15 @@ public class AudioOutputSwitchPreferenceControllerTest {
         assertThat(mEmptyDevices).containsExactly(connectedBtLeAduioDevice1);
     }
 
+    @Test
+    public void getConnectedLeAudioDevices_nullConnectedDevices_returnEmptyList() {
+      when(mLeAudioProfile.getConnectedDevices()).thenReturn(null);
+
+      List<BluetoothDevice> connectedDevices = mController.getConnectedLeAudioDevices();
+
+      assertThat(connectedDevices.isEmpty()).isTrue();
+    }
+
     @Test
     public void findActiveLeAudioDevice_noActiveDevice_returnNull() {
         mLeAudioActiveDevices.clear();