Android Dialog弹出时不显示导航栏(沉浸式)

我们的app是全屏沉浸式的,发现activity在设置了全屏后,弹出dialog底部会跳出导航栏虚拟键。具体原因是因为Dialog的Window抢走了焦点,Window 中的 DecorView 状态改变导致了退出。 解决方法,在Dialog中:

private void fullScreenImmersive(View view) {
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
         int uiOptions = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
             | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
             | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
             | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
             | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
             | View.SYSTEM_UI_FLAG_FULLSCREEN;
         view.setSystemUiVisibility(uiOptions);
     }
 }

 @Override
 public void show() {
     this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
     super.show();
     fullScreenImmersive(getWindow().getDecorView());
     this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
 }