Android Spinner：如何在全屏状态下隐藏状态栏？

Question

我使用此代码来隐藏导航栏：

View root = findViewById(android.R.id.content);
root.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN);     
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

但是当触摸微调器时，状态栏会显示在屏幕顶部。

此解决方案似乎在 android:spinnerMode="dropdown" 时有效

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);
    }
}

android:spinnerMode="dialog" 有解决方案吗？

Answer 1

当重新创建弹出窗口时，每次单击微调器时都需要清除焦点；但不幸的是没有直接的 API 来监听这个事件。

为了克服这个问题，您可以创建一个自定义 Spinner &重写其 performClick()，当单击微调器以显示菜单时会触发该函数。然后您就可以在分享时清除焦点。

public class DialogSpinner extends Spinner {
    public DialogSpinner(Context context) {
        super(context);
    }

    public DialogSpinner(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public DialogSpinner(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }


    @Override
    public boolean performClick() {

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

        return super.performClick();

    }


}