针对iOS的Xamarin Firebase云消息传递（appDelegate）RemoteMessageDelegate错误

Question

我试图将通知的iOS处理程序迁移到Firebase服务器。在appDelegate.cs文件，在xamarin网站（https://components.xamarin.com/gettingstarted/firebaseioscloudmessaging）的步骤之一的文档是这样的：

// Register your app for remote notifications. 
if (UIDevice.CurrentDevice.CheckSystemVersion (10, 0)) { 
    // iOS 10 or later 
    var authOptions = UNAuthorizationOptions.Alert | UNAuthorizationOptions.Badge | UNAuthorizationOptions.Sound; 
    UNUserNotificationCenter.Current.RequestAuthorization (authOptions, (granted, error) => { 
     Console.WriteLine (granted); 
    }); 

    // For iOS 10 display notification (sent via APNS) 
    UNUserNotificationCenter.Current.Delegate = this; 

    // For iOS 10 data message (sent via FCM) 
    Messaging.SharedInstance.RemoteMessageDelegate = this; 
} 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(); 

两行代码中，messaging.sharedinstance ....和UNUSerNotificationCenter.Current ...收到appdelegate的工作量。为了使appdelegate实现Usernotificationcenterdelegate，这是有效的。但是，这不适用于Firebase邮件代理。 Firebase消息委托未被识别。我已经安装了云消息传递包（v1.2.1.1），分析（3.6.0），核心（3.4.5）和实例标识（1.0.8）。这些包通过Nuget包管理器安装。

任何人有一个想法，为什么FIRMessagingDelegate找不到，或者是否有某些特定的需要完成这些版本的iOS包？

Answer 1

FIRMessagingDelegate被命名为IMessagingDelegate：

[Protocol (Name = "FIRMessagingDelegate", WrapperType = typeof(MessagingDelegateWrapper)), ProtocolMember (IsRequired = true, IsProperty = false, IsStatic = false, Name = "ApplicationReceivedRemoteMessage", Selector = "applicationReceivedRemoteMessage:", ParameterType = new Type[] { 
typeof(RemoteMessage) }, ParameterByRef = new bool[] { false }), Introduced (PlatformName.iOS, 10, 0, PlatformArchitecture.None, null)] 
public interface IMessagingDelegate : INativeObject, IDisposable 
{ 
    ~~~ 

您UIApplicationDelegate实现IMessagingDelegate：

[Register("AppDelegate")] 
public class AppDelegate : UIApplicationDelegate, IMessagingDelegate 
{ 
    ~~~~ 

    public void ApplicationReceivedRemoteMessage(RemoteMessage remoteMessage) 
    { 
     Console.WriteLine(remoteMessage); 
    } 

    ~~~~ 
}