Full Screen Notification only showing as a Heads Up

Question

I have been banging my head against the table with this problem for 3 days now, please tell me where I have strayed.

When I am getting an incoming VoIP call, I am try

Answer 1

If I understood your question correctly, you forgot to add flag WindowManager.LayoutParams.FLAG_FULLSCREEN in IncomingCallActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    int flags = WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
            | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
            | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
            | WindowManager.LayoutParams.FLAG_FULLSCREEN;

    getWindow().addFlags(flags);

This combination needed to show activity while screen is locked. Hope it helps.