为什么 navigationBars() 返回全屏 activity？

Question

我 Android API 30 岁以上，我想制作一个全屏应用程序。我在这里禁用了 navigationBars() :

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    binding = ActivitySplashscreenBinding.inflate(getLayoutInflater());
    setContentView(binding.getRoot());
    mContentView = binding.fullscreenContent;
    mContentView.getWindowInsetsController().hide(WindowInsets.Type.navigationBars());

但是，当我点击任何地方时，navigationBars() 返回。

如果我做第二个click/touch，它又消失了，每次都是这种情况。

有什么想法吗？

Answer 1

几个小时后，我找到了解决方案：

@Override
public void onWindowFocusChanged(boolean hasFocus) {
   super.onWindowFocusChanged(hasFocus);
   if(hasFocus)
   {
       fullSceen(getWindow().getDecorView());
   }
   else {
       try {
           Object wmgInstance = Class.forName("android.view.WindowManagerGlobal").getMethod("getInstance").invoke(null);
           Field viewsField = Class.forName("android.view.WindowManagerGlobal").getDeclaredField("mViews");

           viewsField.setAccessible(true);
           ArrayList<View> views = (ArrayList<View>) viewsField.get(wmgInstance);
           for (View view: views) {
               fullSceen(view);

               view.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
                   @Override
                   public void onSystemUiVisibilityChange(int visibility) {
                       fullSceen(view);
                   }
               });
           }
       } catch (Exception e) {
           e.printStackTrace();
       }
       AppUtils.console(this,TAG, "hasFocus == false");
   }
}
private void fullSceen(View view){
   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);
}

自 Android 30+ 以来贬值。对于最后 API，使用 :

        binding = ActivityBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());
        mContentView = binding.fullscreenContent;
        mContentView.getWindowInsetsController().setSystemBarsBehavior(WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
        mContentView.getWindowInsetsController().hide(WindowInsets.Type.navigationBars());

感谢@Hong Nguyen

为什么 navigationBars() 返回全屏 activity？

Why does the navigationBars() come back on Fullscreen activity?

java

android

uinavigationbar

android-api-30