After the android application settings hide the bottom navigation bar, the dialog pops up to get the focus and the bottom navigation bar comes out again.

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);
  }

Paste the customized dialog, the order in show() cannot be changed.

 

 

The resource comes from the network, and it only solves a single dialog. Spinner does not refer to the dialog, but it can be done.

Popupwindow is better to use than dialog, and the idea is to go to the focus.