按下微调器下拉菜单时，禁用全屏模式答案

【问题标题】：when pressed the spinner drop down, full screen mode disabled按下微调器下拉菜单时，禁用全屏模式
【发布时间】：2019-09-05 14:11:44
【问题描述】：

我将 Java 用于 android 项目，因为我必须在全屏模式下使用应用程序，当我按下下拉菜单（微调器）时，全屏模式被禁用。你有什么办法可以防止这种情况发生吗？即使我按下下拉菜单，我也不想退出全屏。我已经完成了所有选项，包括

//method for full screen
private void hideSystemUI() {

    View decorView = getWindow().getDecorView();
    decorView.setSystemUiVisibility(
            View.SYSTEM_UI_FLAG_IMMERSIVE

                    | 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);
}

  ArrayAdapter<String> adapter = new ArrayAdapter<String>(Main_Menu.this,
                R.layout.custom_spinner, paths);

        adapter.setDropDownViewResource(R.layout.custom_spinner_drop_down_item);
        btnlanguage.setAdapter(adapter);


        btnlanguage.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {

                //   Toast.makeText(Main_Menu.this, urlinformation.HomeURL(btnlanguage.getSelectedItem().toString(), slug), Toast.LENGTH_LONG).show();
                mywebview.loadUrl(urlinformation.HomeURL(btnlanguage.getSelectedItem().toString(), slug));

            }

            @Override
            public void onNothingSelected(AdapterView<?> parentView) {

            }

        });

【问题讨论】：

标签： java android android-spinner

【解决方案1】：

这里是解决方法，把这个方法放在你的代码中，在给微调器添加数据后调用onCreate方法。

   public static void apply(Spinner spinner) {
    try {
        Field listPopupField = Spinner.class.getDeclaredField("mPopup");
        listPopupField.setAccessible(true);
        Object listPopup = listPopupField.get(spinner);
        if (listPopup instanceof ListPopupWindow) {
            Field popupField = ListPopupWindow.class.getDeclaredField("mPopup");
            popupField.setAccessible(true);
            Object popup = popupField.get((ListPopupWindow) listPopup);
            if (popup instanceof PopupWindow) {
                ((PopupWindow) popup).setFocusable(false);
            }
        }
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
}

【讨论】：