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android - Flutter：前台通知在 Firebase 消息传递中不起作用

问题描述

当应用程序在前台时，我需要使用本地通知显示 Firebase 通知，但它不起作用。

  FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin=new FlutterLocalNotificationsPlugin();

  static  FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
  static StreamController<Map<String, dynamic>> _onMessageStreamController =
  StreamController.broadcast();
  static StreamController<Map<String, dynamic>> _streamController =
  StreamController.broadcast();
  static final Stream<Map<String, dynamic>> onFcmMessage =
      _streamController.stream;

  @override
  void initState() {
    super.initState();

    var android=AndroidInitializationSettings('mipmap/ic_launcher.png');
    var ios=IOSInitializationSettings();
    var platform=new  InitializationSettings(android,ios);
    flutterLocalNotificationsPlugin.initialize(platform);

    firebaseCloudMessaging_Listeners();
  }

这是 Firebase 代码

 void firebaseCloudMessaging_Listeners() {

if (Platform.isIOS) iOS_Permission();

_firebaseMessaging.getToken().then((token) {
  print("FCM TOKEN--" + token);
});
_firebaseMessaging.configure(
  onMessage: (Map<String, dynamic> message) async {
    print('on message $message');
    showNotification(message);
  },
  onResume: (Map<String, dynamic> message) async {
    print('on resume $message');
  },
  onLaunch: (Map<String, dynamic> message) async {
    print('on launch $message');
  },
);


}

这是showNotification方法

 void showNotification(Map<String, dynamic> msg) async{
    print(msg);
    var android = new AndroidNotificationDetails(
        'my_package', 'my_organization', 'notification_channel', importance: Importance.Max, priority: Priority.High);
    var iOS = new IOSNotificationDetails();
    var platform=new NotificationDetails(android, iOS);
    await flutterLocalNotificationsPlugin.show(
      0,'My title', 'This is my custom Notification', platform,);
  }

和 Firebase 响应

{通知：{title：测试标题，正文：测试通知文本}，数据：{orderid：2，click_action：FLUTTER_NOTIFICATION_CLICK，订单名称：farhana}}

标签： androidpush-notificationdartflutterfirebase-cloud-messaging

解决方案

您可以在 FlutterFire 文档 https://firebase.flutter.dev/docs/migration/#messaging中找到答案

您只需将以下行添加到您的代码中

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

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