我的應用程序是sticky immersive mode因為system navigation bar（我稱之為 SNB）隱藏在我的應用程序的運行時間中。它運行良好但存在一個問題，就是每次我顯示 a 時DialogFragment，都會出現 SNB。我怎么能隱藏它。我在活動類中編寫了幾行代碼，使我的應用程序變為全屏和sticky immersive mode.MyActivity.java@Overrideprotected void onResume() {    super.onResume();    hideSystemUI();}@Overridepublic void onWindowFocusChanged(boolean hasFocus) {    super.onWindowFocusChanged(hasFocus);    hideSystemUI();}public void hideSystemUI() {    // Enables regular immersive sticky mode.    View decorView = getWindow().getDecorView();    decorView.setSystemUiVisibility(            View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION                    );}MyDialog.javapublic class MyDialog extends DialogFragment{    @NonNull    @Override    public Dialog onCreateDialog(Bundle savedInstanceState) {        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());        AlertDialog alertD = builder.create();        alertD.setView(view);        return alertD;    }    public void show() {        Activity activity = getActivity();        show(activity.getSupportFragmentManager(), "dialog");    }    @Override    public void onResume() {        super.onResume();        ViewGroup.LayoutParams params = getDialog().getWindow().getAttributes();        params.width = ViewGroup.LayoutParams.MATCH_PARENT;        params.height = ViewGroup.LayoutParams.WRAP_CONTENT;        getDialog().getWindow().setAttributes((WindowManager.LayoutParams) params);    }}我按照答案顯示對話框而不顯示 SNB：https ://stackoverflow.com/a/33589793/10467639但它沒有按預期工作MyDialog dialog = new MyDialog();// Set the dialog to not focusable.getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);dialog.show();// Set the dialog to focusable again.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);