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

        // Trigger the initial hide() shortly after the activity has been
        // created, to briefly hint to the user that UI controls
        // are available.
        delayedHide(100);
    }
Some older devices needs a small delay between UI widget updates
and a change of the status and navigation bar.
app/src/main/java/home/smart/fly/animations/ui/activity/FullscreenADActivity.java