Question 75314 in Flutter Question posted in
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How to show stream chat notification background using FirebaseMessaging.onBackgroundMessage – Flutter

I’m using stream chat for my app’s chat functionality. In which I’m implementing notification.

So when I’m receiving notification in background

FirebaseMessaging.onBackgroundMessage(firebaseMessagingBackgroundHandler);

  • Above is the function which I call in main.dart.

  • Below is the handler of background message.

Future<void> firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  showLog("firebaseMessagingBackgroundHandler message ===> ${message.data}");
  await Firebase.initializeApp();
  
  final chatClient = StreamChat.of(context).client; //in this line I need context but I can't pass the argument.
  try {
    showLog("in background message received");

    showStreamNotification(message, chatClient);
  } catch (e) {
    showLog(e.toString());
  }
}
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2

Answers


  1. Chosen as BEST ANSWER
    0

    Below thing has solved my issue.

    My mistake is that I'm not doing chatClient.connectUser in background message handler.

    Future<void> firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  showLog("firebaseMessagingBackgroundHandler message ===> ${message.data}");
  await Firebase.initializeApp();
  
  final chatClient = StreamChatClient(apiKey);

  chatClient.connectUser(
    User(id: userId),
    userToken,  //JWT token
    connectWebSocket: false,
  );

  try {
    showLog("in background message received");

    showStreamNotification(message, chatClient);
  } catch (e) {
    showLog(e.toString());
  }
}

  2. 0

    You could create a Global key and set it to your MaterialApp and then you could access to the app context from every where in your app.

    // create a Global key to be a global variable
final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();

// set it to your MaterialApp
MaterialApp(
      title: 'App title',
      navigatorKey: navigatorKey,
      ...
    );

// get your app context
final chatClient = StreamChat.of(navigatorKey.currentContext!).client;

    Hope this helps.

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