View decorView = getWindow().getDecorView();
decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
               | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
               | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
               | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
               | View.SYSTEM_UI_FLAG_FULLSCREEN
               | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);