如何使用颤振插件显示多个通知：flutter_local_notifications答案

【问题标题】：How to display multiple notifications using flutter plugin : flutter_local_notifications如何使用颤振插件显示多个通知：flutter_local_notifications
【发布时间】：2021-09-28 12:30:46
【问题描述】：

下面是我的代码：

const AndroidNotificationChannel notificationChannel = AndroidNotificationChannel(
  'high_importance_channel',
  'high importance Notificaion',
  'this channel is used for import notification',
  importance: Importance.high,
  playSound: true,
);

FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();


Future<void> firebaseBackgroundMessageHandler(RemoteMessage message) async {
  await firebaseMessageHandler(message);
}

Future<void> firebaseForegroundMessageHandler(RemoteMessage message) async {
  await firebaseMessageHandler(message);
}

Future<void> firebaseMessageHandler(RemoteMessage message) async {
  await Firebase.initializeApp();

  try {
    flutterLocalNotificationsPlugin.show(
          message.notification.hashCode,
          message.data["title"].toString(),
          message.data["body"].toString(),
          NotificationDetails(
            android: AndroidNotificationDetails(notificationChannel.id, notificationChannel.name, notificationChannel.description),
          ));
  } catch (_err) {}

}


Future<void> main() async {

  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();

  FirebaseMessaging.onBackgroundMessage(firebaseBackgroundMessageHandler);
  FirebaseMessaging.onMessage.listen(firebaseForegroundMessageHandler);
  //FirebaseMessaging.onMessageOpenedApp.listen(firebaseMessageHandler);

  final AndroidInitializationSettings initializationSettingsAndroid = AndroidInitializationSettings('e_app');

  final InitializationSettings initializationSettings = InitializationSettings(android: initializationSettingsAndroid);

  await flutterLocalNotificationsPlugin.initialize(initializationSettings);

  await flutterLocalNotificationsPlugin.resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>()?.createNotificationChannel(notificationChannel);

  await FirebaseMessaging.instance.setForegroundNotificationPresentationOptions(alert: true, badge: true, sound: true);
}

代码对于单个通知工作正常，但每当我向 android 发送多个通知时，它只会在状态栏中显示最后一个通知。

谁能帮我如何使用颤振本地通知插件在状态栏中显示多个通知？

【问题讨论】：

标签： flutter flutter-local-notification

【解决方案1】：

如果你想对通知进行分组，flutter_local_notifications 中有一个选项可以做到这一点。为此，您可以在代码中添加以下内容

对于 ios：IOSNotificationDetails 中的线程标识符

对于安卓：groupChannelId、groupChannelName、groupChannelDescription，

您可以在此处的文档中找到这些：https://pub.dev/packages/flutter_local_notifications#displaying-a-notification 在“分组通知”下。

基本上相同threadId或groupId下的通知都会被分组显示

【讨论】：