Firebase-无法将类型"AppDelegate"的值分配给类型"UNUserNotificationCenterDelegate?" [英] Firebase - Cannot assign value of type 'AppDelegate' to type 'UNUserNotificationCenterDelegate?'

问题描述

使用此教程部署Firebase时，我总是会编译错误: https://firebase.google.com/docs/cloud-messaging/ios/client我的部署SDK是9.0.

I always get compiling erros when deploying firebase using this tutorial: https://firebase.google.com/docs/cloud-messaging/ios/client My deployment SDK is 9.0.

我该如何解决?

无法将类型为"AppDelegate"的值分配为类型为"UNUserNotificationCenterDelegate吗?"

Cannot assign value of type 'AppDelegate' to type 'UNUserNotificationCenterDelegate?'

第一种情况-我逐步进行的操作(按照本教程操作):

• pod初始化，其中包含以下内容:pod"Firebase/Core"pod"Firebase/Messaging"
• pod安装
• 导入Firebase"；在AppDelegate类的顶部
• 编译了他们的应用程序……工作正常.
• 按照以下步骤将其逻辑与我现有的XCode项目进行比较:
• 包含以下内容的Pod初始化:"Firebase/Messaging"窗格
• pod安装
• 导入了以下内容:UIKit，用户通知，Firebase，FirebaseInstanceID，FirebaseMessaging

AppDelegate中的代码:

Code in AppDelegate:

func application(_ application: UIApplication,
                     didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // [START register_for_notifications]
        if #available(iOS 10.0, *) {
            let authOptions : UNAuthorizationOptions = [.alert, .badge, .sound]
            UNUserNotificationCenter.current().requestAuthorization(
                options: authOptions,
                completionHandler: {_,_ in })
            // For iOS 10 display notification (sent via APNS)
            UNUserNotificationCenter.current().delegate = self
            // For iOS 10 data message (sent via FCM)
            FIRMessaging.messaging().remoteMessageDelegate = self
        } else {
            let settings: UIUserNotificationSettings =
                UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
            application.registerUserNotificationSettings(settings)
        }
        application.registerForRemoteNotifications()
        // [END register_for_notifications]
        FIRApp.configure()
        // Add observer for InstanceID token refresh callback.
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(self.tokenRefreshNotification),
                                               name: .firInstanceIDTokenRefresh,
                                               object: nil)
        return true
    }


    

推荐答案

在AppDelegate的末尾，您需要添加2个扩展(UNUserNotificationCenterDelegate，MessagingDelegate)

At the end of AppDelegate you need to add 2 extensions (UNUserNotificationCenterDelegate, MessagingDelegate)

请参阅此示例应用程序的源代码: https://github.com/firebase/quickstart-ios/tree/master/messaging

See the source code from this sample app: https://github.com/firebase/quickstart-ios/tree/master/messaging

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