当onBackgroundMessage被执行时，在颤动中打开弹出窗口

dependencies:
  flutter_local_notifications: ^5.0.0

import 'package:flutter_local_notifications/flutter_local_notifications.dart';

Future<void> backgroundMessageHandler(RemoteMessage message) async {
  FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();

  const AndroidInitializationSettings initializationSettingsAndroid =
      AndroidInitializationSettings('app_icon');
  final InitializationSettings initializationSettings =
      InitializationSettings(android: initializationSettingsAndroid);
  await flutterLocalNotificationsPlugin.initialize(initializationSettings);

  const AndroidNotificationDetails androidPlatformChannelSpecifics =
      AndroidNotificationDetails(
    'your channel id',
    'your channel name',
    'your channel description',
    importance: Importance.max,
    priority: Priority.high,
  );
  const NotificationDetails platformChannelSpecifics =
      NotificationDetails(android: androidPlatformChannelSpecifics);

  await flutterLocalNotificationsPlugin.show(
    0,
    'Notification Title',
    'Notification Body',
    platformChannelSpecifics,
    payload: 'item x',
  );
}

<uses-permission android:name="android.permission.VIBRATE" />