Question

在扑朔迷离中，我正在使用adhara_socket_io打开套接字并从服务器接收数据，以使用flutter_local_notifications推送通知，并且在应用程序运行时可以正常工作，现在我需要进行此运行在后台运行，因此当我的应用程序未运行时，它仍从服务器接收数据并推送通知，是否仍然需要在后台进行操作？

   void initSocket() async {
    final deviceInfo = await Constants.getDeviceDetails();
    final String deviceId = deviceInfo[2];
    Uuid uuid = Uuid();
    print(deviceInfo);
    final id = uuid.v5(Uuid.NAMESPACE_URL, deviceId);
    print('id ' + id);

    SocketIOManager manager = SocketIOManager();
    SocketIO socket = await manager.createInstance(
      SocketOptions(URI,
          enableLogging: false,
          transports: [Transports.WEB_SOCKET /*, Transports.POLLING*/]),
    );
    socket.onConnect((data) {
      print("connected...");
      print(data);
      socket.emit('settings', [
        {'device_id': id}
      ]);
    });
    socket.onConnectError((_) => print('connect error'));
    socket.onConnectTimeout((_) => print('timeout'));
    socket.onError((_) => print('error'));
    socket.onDisconnect((_) => print('disconnect'));
    socket.on('notif', (data) {
      print('notif');
      _showNotificationWithDefaultSound(data['heading'],data['content']);
    });
    socket.connect();
  }

  initNotifications() {
    var initializationSettingsAndroid = AndroidInitializationSettings('@mipmap/ic_launcher');
    var initializationSettingsIOS = IOSInitializationSettings();
    var initializationSettings = InitializationSettings(initializationSettingsAndroid,initializationSettingsIOS);
    flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
    flutterLocalNotificationsPlugin.initialize(initializationSettings,onSelectNotification: onSelectNotification);
  }

  Future onSelectNotification(String payload)async{
    print('payload');
  }

  Future _showNotificationWithDefaultSound(heading,content) async {
  var androidPlatformChannelSpecifics = new AndroidNotificationDetails(
      'your channel id', 'your channel name', 'your channel description',
      importance: Importance.Max, priority: Priority.High);
  var iOSPlatformChannelSpecifics = new IOSNotificationDetails();
  var platformChannelSpecifics = new NotificationDetails(
      androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
  await flutterLocalNotificationsPlugin.show(
    0,
    heading,
    content,
    platformChannelSpecifics,
    payload: 'Default_Sound',
  );
}

Answer 1

https://medium.com/vrt-digital-studio/flutter-workmanager-81e0cfbd6f6e
希望这会有所帮助，或者您可以使用fcm https://fireship.io/lessons/flutter-push-notifications-fcm-guide/

但是我是乞讨者。如果这不能帮助您，我对此不太了解。

即使关闭我的应用程序，也可以在后台运行dart代码

1 个答案: