Flutter ios FirebaseApp.configure() doesn't start app

Error Desc
Desc1: Flutter ios FirebaseApp.configure() doesn't start app.
Desc2: Exception NSException * "Default app has already been configured." 0x0000600001de9a70
Desc3: IOS FcmDartService#start on channel plugins.flutter.io/firebase_messaging)

STEP 1 - GoogleService-Info.plist
1- Download "GoogleService-Info.plist"
2- Open Xcode
3- Click Runner (Runner.xcodeproj)
4- Drag "GoogleService-Info.plist" to under Info.plist

STEP 2 - AppDelegate.swift

OLD CODE - AppDelegate.swift


import UIKit
import Flutter
import Firebase

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
	FirebaseApp.configure()
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
     
}

NEW CODE - AppDelegate.swift


import UIKit
import Flutter
import Firebase

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {

override init() {
    super.init()
    FirebaseApp.configure()
  }
    
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
    
    
}

Author: Engin ATALAY

Date: 24.01.2021 23:20:21

View Count: 2228

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