エラープッシュ通知に

Question

を送信するためにfirebaseと私のプロジェクトを接続している間、私は通知を送信するためにfirebaseする私のアプリを接続しようとしていますが、私はエラーがあります：一般的な機能で

"_OBJC_CLASS_$_FIRApp", referenced from: 

clang: error: linker command failed with exit code 1 (use -v to see invocation) 

なし何らかのエラーがあります。 同じコードにはエラーはありませんが、ビルドして実行するとこのエラーが発生します。 証明書を作成中にもエラーはありませんでした。 Here is how the errror is look like。助けてください！

// 
// AppDelegate.swift 
// COAP 
// 
// Created by Azamat Bolegenov on 23.05.17. 
// Copyright © 2017 Azamat Bolegenov. All rights reserved. 
// 

import UIKit 
import CoreData 
import FirebaseCore 
import FirebaseMessaging 


@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate { 

    var window: UIWindow? 


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { 
     // Override point for customization after application launch. 

     FirebaseApp.configure() 

     let notificationTypes: UIUserNotificationType = [UIUserNotificationType.alert, UIUserNotificationType.badge, UIUserNotificationType.sound] 
     let notificationSettings = UIUserNotificationSettings(types: notificationTypes, categories: nil) 
     application.registerForRemoteNotifications() 
     application.registerUserNotificationSettings(notificationSettings) 
     return true 
    } 

    func applicationWillResignActive(_ application: UIApplication) { 
     // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 
     // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. 
    } 

    func applicationDidEnterBackground(_ application: UIApplication) { 
     // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 
    } 

    func applicationWillEnterForeground(_ application: UIApplication) { 
     // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. 
    } 

    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) { 
     print("MessageID:: \(userInfo["gcm_message_id"]!)") 
     print(userInfo) 
    } 




    func applicationDidBecomeActive(_ application: UIApplication) { 
     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 
    } 

    func applicationWillTerminate(_ application: UIApplication) { 
     // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 
    } 


} 

Answer 1

ゴー設定を構築するために>新ライン$上の他のリンカフラグ>（継承）：ここで

は、私が書いたコードの一部です。

クリーンでCmd + Ctrl + Kを実行してから、