我的项目遇到了同样的问题.结合我发现的两个解决方案，它终于成功了.(firebase_messaging 7.0.3)

对于调试模式，您不需要这些.

第1步:编辑AppDelegate.swift

 导入UIKit进口颤振@UIApplicationMain@objc类AppDelegate:FlutterAppDelegate {覆盖func应用程序(_应用程序:UIApplication，didFinishLaunchingWithOptions launchOptions:[UIApplication.LaunchOptionsKey:任何]?)->布尔{如果#available(iOS 10.0，*){UNUserNotificationCenter.current().delegate =自我为?UNUserNotificationCenterDelegate}GeneratedPluginRegistrant.register(with:self)application.registerForRemoteNotifications()返回super.application(应用程序，didFinishLaunchingWithOptions:launchOptions)}} 

第2步:编辑ios/Runner/Info.plist.添加此内容:

 < key> FirebaseAppDelegateProxyEnabled</key>< string> NO</string> 

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
}

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>