图库浏览虚拟导航栏隐藏进入全屏模式弹出退出全屏模式提示框

frameworks\base\services\core\java\com\android\server\policy\ImmersiveModeConfirmation.java

@Override
public void onAttachedToWindow() {
    super.onAttachedToWindow();

    DisplayMetrics metrics = new DisplayMetrics();
    mWindowManager.getDefaultDisplay().getMetrics(metrics);
    float density = metrics.density;

    getViewTreeObserver().addOnComputeInternalInsetsListener(mInsetsListener);

    // create the confirmation cling
    mClingLayout = (ViewGroup)
            View.inflate(getContext(), R.layout.immersive_mode_cling, null);

    final Button ok = (Button) mClingLayout.findViewById(R.id.ok);
    ok.setOnClickListener(new OnClickListener() {
        @Override

点击了OK按钮则不会再提示。