Xamarin.iOS Firebase 未收到推送通知但收到令牌

Question

我在 Xamarin.Forms 項目中設置推送通知。 我已經為Xamarin做了所有工作這甚至不是我第一次這樣做，但我仍然無法弄清楚發生了什么。

我做了什么：
1. Included Nuget Xamarin.Firebase.iOS.CloudMessaging v3.1.2 (which is not the latest, but the latest is not even building because of library errors)
2. 創建 Firebase 應用程序並按照通常的設置，上傳 my.p12 用於推送通知並添加我的團隊 ID。

3. 添加了我的 GoogleService-Info.plist 並將它的 BuildAction 設置為“BundleResource”
4.更新了我的Info.plist

5. 確保我在 Apple Developer Program 中的 App ID 包含推送通知和正確的證書

6.添加了與UserNotifications.IUNUserNotificationCenterDelegate、IMessagingDelegate接口相關的每一段代碼
7. 取回我的令牌

Firebase.InstanceID.InstanceId.Notifications.ObserveTokenRefresh((sender, e) =>
            {
                var token = Messaging.SharedInstance.FcmToken;

                if (!string.IsNullOrEmpty(token))
                {

                    //AppData.Instance.TokenMobile = newToken;
                }
            });

8. 回到 Firebase 控制台，創建了一個測試推送並嘗試通過“Invia messagio di prova”（“發送消息”）發送它，這讓我指定了一個令牌和通過發布。
   
   

我的 AppDelegate.cs

    public partial class AppDelegate : global::Xamarin.Forms.Platform.iOS.FormsApplicationDelegate, UserNotifications.IUNUserNotificationCenterDelegate, IMessagingDelegate
    {
        //
        // This method is invoked when the application has loaded and is ready to run. In this 
        // method you should instantiate the window, load the UI into it and then make the window
        // visible.
        //
        // You have 17 seconds to return from this method, or iOS will terminate your application.
        public override bool FinishedLaunching(UIApplication app, NSDictionary options)
        {
            global::Xamarin.Forms.Forms.Init();
            global::Xamarin.Forms.FormsMaterial.Init();
            LoadApplication(new App());

            Firebase.Core.App.Configure();
            // For iOS 10 data message (sent via FCM)
            Messaging.SharedInstance.Delegate = this;

            if (UIDevice.CurrentDevice.CheckSystemVersion(10, 0))
            {
                // For iOS 10 display notification (sent via APNS)
                UNUserNotificationCenter.Current.Delegate = this;

                // iOS 10 or later
                var authOptions = UNAuthorizationOptions.Alert | UNAuthorizationOptions.Badge | UNAuthorizationOptions.Sound;
                UNUserNotificationCenter.Current.RequestAuthorization(authOptions, (granted, error) =>
                {
                    if (granted)
                    {
                        InvokeOnMainThread(() =>
                        {
                            UIApplication.SharedApplication.RegisterForRemoteNotifications();
                        });
                    }
                });
            }
            else
            {
                // iOS 9 or before
                var allNotificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound;
                var settings = UIUserNotificationSettings.GetSettingsForTypes(allNotificationTypes, null);
                UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
            }

            UIApplication.SharedApplication.RegisterForRemoteNotifications();

            // Handle token as you wish
            Firebase.InstanceID.InstanceId.Notifications.ObserveTokenRefresh((sender, e) =>
            {
                var token = Messaging.SharedInstance.FcmToken;

                if (!string.IsNullOrEmpty(token))
                {

                    //AppData.Instance.TokenMobile = newToken;
                }
            });


            UIApplication.SharedApplication.StatusBarHidden = true;
            UIApplication.SharedApplication.ApplicationIconBadgeNumber = 0;

            return base.FinishedLaunching(app, options);
        }

        public override void ReceivedRemoteNotification(UIApplication application, NSDictionary userInfo)
        {
        }

        public override void DidReceiveRemoteNotification(UIApplication application, NSDictionary userInfo, Action<UIBackgroundFetchResult> completionHandler)
        {
        }

        [Export("messaging:didRefreshRegistrationToken:")]
        public void DidReceiveRegistrationToken(Messaging messaging, string fcmToken)
        {
            Console.WriteLine($"Firebase registration token: {fcmToken}");

            // TODO: If necessary send token to application server.
            // Note: This callback is fired at each app startup and whenever a new token is generated.
        }

        public override void FailedToRegisterForRemoteNotifications(UIApplication application, NSError error)
        {
        }

        public override void RegisteredForRemoteNotifications(UIApplication application, NSData deviceToken)
        {
            //Tested
            //Messaging.SharedInstance.ApnsToken = deviceToken;
        }

        public void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
        {
            var userInfo = notification.Request.Content.UserInfo;

            // With swizzling disabled you must let Messaging know about the message, for Analytics
            // Messaging.SharedInstance.AppDidReceiveMessage (userInfo);

            // Print full message.
            Console.WriteLine(userInfo);

            // Change this to your preferred presentation option
            completionHandler(UNNotificationPresentationOptions.None);
        }

        public void DidReceiveNotificationResponse(UNUserNotificationCenter center, UNNotificationResponse response, Action boh)
        {

        }

        [Export("messaging:didReceiveMessage:")]
        public void DidReceiveMessage(Messaging messaging, RemoteMessage message)
        {

        }
    }

我還將這個密鑰添加到 Entitlment.plist 文件中：

<dict>
    <key>aps-environment</key>
    <string>development</string>
</dict>   

在這一點上，我期待在我的應用程序中收到一些東西，但我什么也收不到。
我在嘗試實現的每個回調中放置了一些斷點，但沒有一個被調用。
如果它有幫助，甚至“DidReceiveRegistrationToken”方法都不會被調用。

Answer 1

解決了這個問題。
我不知道為什么，但我在我的 GoogleService-Info.plist 中發現了一個與 Firebase 控制台中指定的密鑰不同的 API 密鑰。 我更新了密鑰，現在我正在接收通知。