Android

Question

我想在单击按钮时关闭弹出窗口 window，但关闭功能似乎不起作用并且 window 没有关闭。我做错了什么？

（我是初学者，所以代码可能是'weird'。请理解...）

public class AlarmPopup extends Activity {
    private PopupWindow popup;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        onShowPopup();
    }

    public void onShowPopup(){
        LayoutInflater inflater = (LayoutInflater)     getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        final View view = inflater.inflate(R.layout.alarm_popup, null, false);
        final PopupWindow popup = new PopupWindow(view, 400, 300, true);

        setContentView(R.layout.alarm_popup);

        view.findViewById(R.id.button).post(new Runnable() {
            @Override
            public void run() {
                popup.showAtLocation(view, Gravity.CENTER, 0, 0);
            }
        });

        findViewById(R.id.button).setOnClickListener(mClickListener);
    }

    Button.OnClickListener mClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) { // dismiss and stop the alarm function on other class
            Intent i = new Intent(AlarmPopup.this, AlarmService.class);
            stopService(i); // this function is working...
            popup.dismiss();
        }
    };
}

Answer 1

您已将弹出窗口声明为全局弹出窗口，并在您的 onShowPopup 内部为弹出窗口创建新对象，这样本地弹出窗口将永远无法从侦听器访问，因此请进行如下更改：

public void onShowPopup(){
    LayoutInflater inflater = (LayoutInflater)     getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    final View view = inflater.inflate(R.layout.alarm_popup, null, false);
    popup = new PopupWindow(view, 400, 300, true);

    setContentView(R.layout.alarm_popup);

    view.findViewById(R.id.button).post(new Runnable() {
        @Override
        public void run() {
            popup.showAtLocation(view, Gravity.CENTER, 0, 0);
        }
    });

    view.findViewById(R.id.button).setOnClickListener(mClickListener);
}

Answer 2

您用来关闭弹出窗口的弹出变量 window 尚未在您发布的代码中初始化。您在方法内部创建的最终变量是本地变量，无法在该方法外部访问。所以初始化你的变量或者在方法中使用相同的变量。

Android - 弹出窗口 window 未关闭

Android - Popup window is not closing

popupwindow