gistfile1.txt

	@Override public void onCreate(Bundle state) {
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
			hideSystemUI();
		}
		getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
	}
  
  @Override public void onWindowFocusChanged(boolean hasFocus) {
		super.onWindowFocusChanged(hasFocus);
		if (hasFocus) {
			hideSystemUI();
		}
	}

	private void hideSystemUI() {
		// Enables sticky immersive mode.
		this.view.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
		);
	}