error: no such module 'FirebaseInstanceID' on ios

Question

i am trying to run my code and keep telling me

error: no such module 'FirebaseInstanceID'
    import FirebaseInstanceID

my code in AppDelegate.swift

import UIKit
import Flutter

import Firebase
import FirebaseAuth
import UserNotifications
import FirebaseInstanceID

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
  
   override func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let firebaseAuth = Auth.auth()
        firebaseAuth.setAPNSToken(deviceToken, type: AuthAPNSTokenType.unknown)

    }
    override func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        let firebaseAuth = Auth.auth()
        if (firebaseAuth.canHandleNotification(userInfo)){
            print(userInfo)
            return
        }
    
    }
}

i think is missing in my pod, i did not no how to install it to my pod file.

Answer 1

FirebaseInstanceID is deprecated now, that is why this error is coming. Remove import FirebaseInstanceID from your AppDelegate.swift and instead add import FirebaseMessaging because FCM token is now provided directly on the Messaging instance. Now replace the code of InstanceID in didRegisterForRemoteNotificationsWithDeviceToken with this

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    Messaging.messaging().apnsToken = deviceToken
    Messaging.messaging().token { (token, error) in
        if let error = error {
            print("Error fetching remote instance ID: \(error.localizedDescription)")
        } else if let token = token {
            print("Token is \(token)")
        }
    }
}

Answer 2

updated 19/07/2021

remove the FirebaseInstanceID and install Firebase Messaging latest version..

i later solve the issue by installing Firebase Messaging Plugin

Firebase messaging Plugin