status bar flicker when exiting fullscreen activity

Question

I noticed a pretty irritating flicker that happens in the following scenario: display a fullscreen activity and then launch another activity that is not fullscreen.

In my app I use an action bar at the top of the second activity and I clearly see how a flickering is done when switching between the activities.

When the status bar appears, it doesn't smoothly push my activity down, but very quickly and with this annoying flicker.

Is there some API I can use to control this behaviour? Or some other workaround?

Stratovision

Answer 1

I had same issue. Below workaround fixed it, put this code before finishing your first activity.

Handler handler = new Handler();
handler.post(new Runnable() {
    @Override
    public void run() {
        YourActivity.this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
    }
});

Dextroamphetamine

If it fix your problem you can accept this as answer – Dextroamphetamine

This was the only answer that worked. I put the following code in the Oncreate before setContentView. ... if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY); } ... And don't forget to put it in onWindowFocusChanged override method as well. – Gunpowder