有没有办法检测Android中何时出现弹出窗口？

public class MyAccessibilityService extends AccessibilityService {
    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        // 监听窗口状态变化事件
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
            // 获取当前窗口的包名和类名
            String packageName = event.getPackageName().toString();
            String className = event.getClassName().toString();

            // 判断是否是弹出窗口
            if (className.equals("android.widget.PopupWindow")) {
                // 弹出窗口的处理逻辑
                // ...
            }
        }
    }

    @Override
    public void onInterrupt() {
        // 中断服务时的处理逻辑
    }
}

<service
    android:name=".MyAccessibilityService"
    android:label="My Accessibility Service"
    android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
    <intent-filter>
        <action android:name="android.accessibilityservice.AccessibilityService" />
    </intent-filter>
    <meta-data
        android:name="android.accessibilityservice"
        android:resource="@xml/accessibility_service_config" />
</service>

<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeWindowStateChanged"
    android:accessibilityFeedbackType="feedbackGeneric"
    android:accessibilityFlags="flagDefault"
    android:canRetrieveWindowContent="true"
    android:description="@string/accessibility_service_description"
    android:notificationTimeout="100"
    android:packageNames="com.example.app" />