FirebaseMessaging.onBackgroundMessage is not invoked when my app is on background in flutter , its happening only in Ios devices

Question

I Am making an app which has push notification Property app is working when we hit notification on the foreground , but when app is on background my _backgroundHandler() method is not invoking, its happening only In IOS App Only

Grotesquery

Answer 1

also struggle this issue.

set payload as below. mutable-content make sense.

apns: {
    payload: {
        aps: {
            'mutable-content': 1, 
            'content-available': 1
        }
    }
}

https://github.com/firebase/flutterfire/issues/9381#issuecomment-1229167020

set "mutable-content:1" in payloads, iOS passes the notification to our notification service app extension.

For more information APNs payload, see the following links:

https://developer.apple.com/documentation/usernotifications/setting_up_a_remote_notification_server/generating_a_remote_notification

Accountable

'content-available': 1 did the trick for me – Autobus

Answer 2

Enable background fetch, background processing and remote notification in Xcode

Edit

Add mutable key to payload

{ "to": "dWdhfjfjdbzbmjJ5....", "content_available": true, "mutable_content": true,

"data": { "message": "some msg", "mediaUrl": "image url here" },

"notification": { "body": "notification msg", "sound": "default" } }

EDIT

var payload = {
    notification: {
      title: `msg title here`,
      body: `msg body here`
      }`,
    },
    // Set Android priority to "high"
    android: {
      priority: "high",
    },
    // Add APNS (Apple) config
    apns: {
      payload: {
        aps: {
          contentAvailable: true,
        },
      },
      headers: {
        //"apns-push-type": "background", // This line prevents background notification
        "apns-priority": "10",
      },
    },
    token: "dnqTQVso60GfnnuOjHv8_e:APA91bElr-K3xkQMdYHX8VMrasdfasdfkjhasidfgjn"
 };

Millen

Already did it, but same problem exists , I am sucking on it for 5 days I did not find any solution of that – Grotesquery

Also did you add permission to allow sound alert and badge? – Millen

yes i also allowed – Grotesquery

All other push notifications are working? – Millen

yes all working in forground also – Grotesquery

in android, all state notifications are working , means foreground,background,and also kill state – Grotesquery

sory to say but already added this in my payload but same result no message received in background handler – Grotesquery

Try setting priority too ib apns – Millen

from app developer?? – Grotesquery

firebase.google.com/docs/cloud-messaging/… – Millen

"apns-priority":"5" did it like this but same result – Grotesquery

i have an update in my ios mobile is this the issue ?? – Grotesquery

No an update available cannot be an issue. Should be some settings that's missing. Are you getting notification when the app is in foreground – Millen

yes i getting the notification when app is forground – Grotesquery

And if i used content_available true it's showing 2 notifications first firebase server then it comes to my modified notification (means if I used content_available true notification is coming in the background but first notification shows silently then my original notification come with image – Grotesquery

Added a payload.. Please try that one – Millen

already tried to added the paylod and check same result coming 2 notification – Grotesquery

first silently (Like when we send through direct firebase messaging server ) and second one is my modified notfication – Grotesquery

Same problem with small body , notification also coming twice – Grotesquery

Same issue here, all of a sudden it is not working. When I then opens the app the notifications arrives via local notifications package – Gona

Answer 3

Adding this in my payload solved my issue:

apns: {
    payload: {
        aps: {
            'mutable-content': 1, 
            'content-available': 1
        }
    }
}

Dump

Answer 4

I have face this issue too.

@goza's answer should been accepted.

This is my sending json.

{
   "message":{
      "token":"fcm token",
      "notification":{
         "title":"NotifyTitle",
         "body":"NotifyBody"
      },
      "data":{
         "title":"DataTitle",
         "body":"DataBody"
      },
      "apns":{
          "payload":{
             "aps":{
                "content-available":1
             }
          }
       }
   }
}

Astrogeology