flutter: fcm ios push notifications doesn't work in release mode - flutter

Question

I have bound my flutter-iOS app to firebase and i'm also using firebase-messaging and cloud functions for sending notifications via subscribing to topics, i'm using the APNs push notifications key of apple developer account. when i use the option runner>flutter run main.dart in release mode to build my app on my phone, fcm notifications doesn't work anymore, while it works in development mode, anyone can help me fix this?
this is my index.json code:
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
var newData;
exports.messageTrigger = functions.firestore.document('notifications/{notificationsId}').onCreate(async (snapshot, context) => {
newData = snapshot.data();
const payload = {
notification: {
title: newData.title,
body: newData.body,
sound: 'default'
},
data: {
click_action: 'FLUTTER_NOTIFICATION_CLICK',
message: newData.title,
}
};
if (newData.language === 'english'){
await admin.messaging().sendToTopic('english', payload);
}
else if (newData.language === 'arabic'){
await admin.messaging().sendToTopic('arabic', payload);
}
else if (newData.language === 'kurdish'){
await admin.messaging().sendToTopic('kurdish', payload);
}
});
hence package.json:
{
"name": "functions",
"description": "Cloud Functions for Firebase",
"scripts": {
"lint": "eslint .",
"serve": "firebase emulators:start --only functions",
"shell": "firebase functions:shell",
"start": "npm run shell",
"deploy": "firebase deploy --only functions",
"logs": "firebase functions:log"
},
"engines": {
"node": "10"
},
"dependencies": {
"firebase-admin": "^8.10.0",
"firebase-functions": "^3.6.1"
},
"devDependencies": {
"eslint": "^5.12.0",
"eslint-plugin-promise": "^4.0.1",
"firebase-functions-test": "^0.2.0"
},
"private": true
}

Answer 1

My project got the same issue. Combined two solutions I found, it finally works. (firebase_messaging 7.0.3)
As for debug mode, you don't need these.
Step 1: Edit AppDelegate.swift
import UIKit
import Flutter
#UIApplicationMain
#objc class AppDelegate: FlutterAppDelegate {
override func application(
_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
) -> Bool {
if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
}
GeneratedPluginRegistrant.register(with: self)
application.registerForRemoteNotifications()
return super.application(application, didFinishLaunchingWithOptions: launchOptions)
}
}
Step 2: Edit ios/Runner/Info.plist. Add this:
<key>FirebaseAppDelegateProxyEnabled</key>
<string>NO</string>

Answer 2

After update firebase_messaging to 7.0.0 I had the same problem. I added application.registerForRemoteNotifications() in my AppDelegate.swift and it worked!

Answer 3

I tried many ways. I did deep research, when i give up i checked my Xcode Settings and i saw under Signing&Capabilities -> Debug -> Notification added but Signing&Capabilities -> Release I didn't add.
so i added capability and it worked look this

Answer 4

I have the same issue. Looks like iOS release require additional notification params
To check that notification works you could try to send message directly from the firebase console.
Cloud Messaging -> Send your first message -> Enter notification title and text -> Send test message -> Enter your device token -> Test
To obtain device token you can use print(await FirebaseMessaging().getToken());
To check release logs connect the device and open Xcode -> Window -> Devices and Simulators -> Open Console
If it works you could try to add this params:
const payload = {
notification: {
title: newData.title,
body: newData.body,
sound: 'default'
},
data: {
click_action: 'FLUTTER_NOTIFICATION_CLICK',
message: newData.title,
},
apns: {
headers: { "apns-priority": "5" },
payload: {
aps: {
contentAvailable: true,
category: "NEW_MESSAGE_CATEGORY"
}
}
},
};
But I'm not sure which param helps: "apns-priority" or contentAvailable.