Merge "Partial revert of ag/7508382 to retain back button responsiveness in BiomtericPrompt" into qt-dev am: 4024769fd1

am: a8040cce98

Change-Id: If2b8cd646275f77f8d17099fd3a728c551fd9c3c

packages/SystemUI/src/com/android/systemui/biometrics/BiometricDialogView.java

@@ -228,6 +228,10 @@ public abstract class BiometricDialogView extends LinearLayout {
             showTryAgainButton(false /* show */);
             mCallback.onTryAgainPressed();
         });
+
+        // Must set these in order for the back button events to be received.
+        mLayout.setFocusableInTouchMode(true);
+        mLayout.requestFocus();
     }
 
     public void onSaveState(Bundle bundle) {