I have implemented firebase_messaging in my flutter application. Notifications are received in both android and iOS. I am using the following function for receiving notification.
FirebaseMessaging.onMessage.listen((RemoteMessage message) {
print('onMessage: ${message.data}');
});
This function is getting called when notification is recevied in Android. But in iOS, this function is not getting called. Is there any fix available for this issue?
Related
I'm sending FCM notifications from Kotlin native code in a Flutter app.
How can I open a Flutter terminated app by clicking on the notification that I have send through Kotlin native code?
Is there any way to achieve it?
Solution: I have solved it by using
FirebaseMessaging.instance.getInitialMessage().then((message) {
if (message != null) { // your logic }
});
Flutter Incoming Callkit notifications are working fine on my iOS app in all states (foreground/background/terminated).
On iOS device, issue is when my app is in background or terminated state and if I open any other app after closing or minimizing my application , I stop getting callKit notification in both background/terminated state.
I don't know that which part can cause this issue i.e if its from my code or its the problem in iOS device itself. Because besides opening another app after closing/minimizing my app, I am getting call notifications in all states of my app.
[Note: Everything is working fine in the Android app]
This is the silent notification being received to the receiver from cloud function.
await admin.messaging().send({
token: token_o,
notification: {
},
data: {
imageUrl: requesterImageUrl,
chatRoomId: chatRoomId,
screenName: 'voiceScreen',
voiceCall: 'voiceCall',
callerName: requesterName,
callsDocId: callsDocId,
senderId: requesterId,
},
android: {
notification: {
click_action: "android.intent.action.MAIN"
},
},
apns: {
headers: {
apns_priority: "10",
},
payload: {
aps: {
badge: 1
},
notification: {
title: "iOVoiceCallNotification",
body: {},
},
mutable_content: true,
content_available : true,
}
}
}).then(value => {
functions.logger.log("Notification for AudioCall is sent to the Receiver");
}).catch((e) => {
functions.logger.log(e.toString());
});
I can provide anyother code or log if required.
I simply had to configure pushKit to awake iOS from background & terminated state.
Note: Even for pushKit, I had to create a token for iOS device from the getVoipToken() function that is present in flutter_call_kit incoming package.
Inorder to recieve callKit notifications perfectly in background/terminated states in IOS you have to do following necessary things:
Implement APNs (Apple push notifications) for IOS. Because IOS devices will not wake the phone and show call when you send firebase notifications in background/terminated states. IOS devices require APNs to achieve this.
Follow the instructions written in PUSHKIT.md if you are using flutter_callkit_incoming package for flutter app.
Configure your backend (from where you want to recieve notifications) to send both firebase and APN notifications depends upon the device user is using. (I recommend you to send the platform e.g "android" or "ios" along with the device token to your backend when you register the firebase token in flutter app. You can also ask for IOS deviceToken from firebase.
I know its very lengthy process but it is. I was also very disappointed when I was required to integrate call notifications in my app and I have to do all this on my frontend app and backend.
I want to display a push notification when my app is in the background.
I am using the flutter_local_notifications package and the firebase_messaging package.
Push notifications are working great with firebase_messaging and when my app is the background.
However, the below method :
// The following handler is called, when App is in the background.
FirebaseMessaging.onBackgroundMessage(firebaseMessagingBackgroundHandler);
is not called if a RemoteNotification object is passed through the RemoteMessage :
Future<void> firebaseMessagingBackgroundHandler(RemoteMessage message) async {
print('message from background handler');
print("Handling a background message: ${message.messageId}");
// If this is null, then this handler method is called
RemoteNotification remoteNotification = message.notification;
showNotificationFromData(message.data);
}
Therefore, i have to pass the message.data object which is a Map<String, dynamic>.
My problem is that i don't receive push notification anymore when this firebaseMessagingBackgroundHandler handler method is called.
So i have been trying to use the flutter_local_notification package to display a push notification but as it is said, it's "local" so it's working fine in the Foreground but apparently not in the background (the same code, with the same data is not showing in the background as a push notification).
Question :
I need to call the firebaseMessagingBackgroundHandler handler to handle events in my app. So i can do to still have push notifications when my app is in the background please ?
Thanks
Okay i have found the solution. It was to set the content_available value to True in the server-side code.
To replace the firebase_messaging.Notification item, we need to override to the android and apns configs.
This looks like this in python :
apnsConfig = messaging.APNSConfig(
payload=messaging.APNSPayload(
aps=messaging.Aps(
content_available=True,
)
),
)
I am now receiving push notifications and call the background handler inside the dart code.
I know this bit too late but anyone trying to get custom notification using firebase then here is the solution
For Android (Flutter)
On Android, notification messages are sent to Notification Channels which are used to control how a notification is delivered. The default FCM channel used is hidden from users, however provides a "default" importance level. Heads up notifications require a "max" importance level.
This means that we need to first create a new channel with a maximum importance level & then assign incoming FCM notifications to this channel. we can take advantage of the flutter_local_notifications package
Add the flutter_local_notifications package to your local project.
Create a new AndroidNotificationChannel instance:
const AndroidNotificationChannel channel = AndroidNotificationChannel(
'high_importance_channel', // id
'High Importance Notifications', // title
'This channel is used for important notifications.', // description
importance: Importance.max,
);
(keep in mind this is example code but you can custimize notification through notification channel code)
Create the channel on the device:
final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
FlutterLocalNotificationsPlugin();
await flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>()
?.createNotificationChannel(channel);
Once created, we can now update FCM to use our own channel rather
than the default FCM one. To do this, open the
android/app/src/main/AndroidManifest.xml file for your
FlutterProject project. Add the following meta-data schema within
the application component:
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="high_importance_channel" />
now whenever you send notification specify your channel id and your app automatically show your custom notification (through api or firebase console)
{
"message":{
"token":"token_1",
"android_channel_id":"high_importance_channel" //specify channel id here
"data":{},
"notification":{
"title":"FCM Message",
"body":"This is an FCM notification message!",
}
}
}
as for ios they don't support notification channel i don't have necessary resources and info how things works if you guys know comment below will be much appriciated
I have an app that was using firebase messaging 7.0.3 and all worked perfectly. But when I migrated to firebase messaging 9.0.0, the push notifications are not being handled.
I know that the app is correctly linked to firebase and cloud messaging because in background I see the push notification comming, the problem is when I click that notification the app don't handle this event. Also, when the app is in foreground, the event of receiving the notification is not being triggered.
Specifically, the functions FirebaseMessaging.onMessage and FirebaseMessaging.onMessageOpenedApp are not working. My code is:
FirebaseMessaging.onMessage.listen((RemoteMessage message) {
print("notification: message");
});
FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
print("notification: resume");
});
The prints are never called, and if I put some more code inside isn't executed too.
I also call FirebaseMessaging.getToken and I can get the token, plus when the app is in background I get the push notification, so is not a link problem with firebase. In the logs, when I receive the push I can see a message saying: Broadcast received for message. So I assumed that the push is arriving in all the occasions, and I am doing something wrong in the code.
I tested all cases in Android and iOS physical devices.
Someone know why this occurs?
I came across this exact same issue after migrating and upgrading to 9.0.0.
There is a minor issue with 9.0.0 plugin.
The fix can be found here:
https://github.com/FirebaseExtended/flutterfire/issues/4949
To cut a long story short, if you navigate to the definition of the factory
RemoteMessage.fromMap() Using Cmd+Click or Ctrl+Click while hovering over the RemoteMessage class with the mouse), in the return statement, change contentAvailable: map['contentAvailable'], to contentAvailable: map['contentAvailable']??false.
Notifications are now working for me again now.
This should work for you until the plugin is fixed.
I am using firebase_messaging library with firebase for push notification in flutter. The documentation says that myBackgroundMessageHandler is called when the app is in background. But it has not happened.
I would like to format the title and the body of the notification before it is shown. I am getting notifications when the app is in the background but that particular method is not called. Currently it just shows the exact text sent by backend in title and body.
Is there something I have to do to enable(?) this method? I have it in my fcm.configure method:
_fcm.configure(
onBackgroundMessage: myBackgroundMessageHandler,
)
static Future<Map<String, dynamic>> myBackgroundMessageHandler(Map<dynamic, dynamic> message) async {
//some code here
return message;
}
Thanks in advance!
I had the same problem.
onBackgroundMessage apparently gets triggered only for data-messages.
See the difference here:
https://firebase.google.com/docs/cloud-messaging/concept-options
With FCM, you can send two types of messages to clients:
Notification messages, sometimes thought of as "display messages."
These are handled by the FCM SDK automatically.
Data messages, which
are handled by the client app.
In my case I had to remove the notification (subject, body etc), but also styling like bigpicture completely. Try sending only a data object.