FCM iOS Push Notification 收不到任何通知

Question

我目前正在处理通知，但未能从 Firebase FCM 获得任何通知。

podfile配置为：

target 'Project' do
  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!

  # Pods for Project
  pod 'Firebase/Core'
  pod 'Firebase/Messaging'
end

我已经从Background fetches 激活了Push Notifications 和Remote Notifications，并且已经阅读了stackoverflow 中的另一个主题，该主题目前与here 中的主题相似

我想与您分享我的 AppDelegate 代码，但首先我不得不说 Google 的推送通知文档似乎有点混乱，因为这里有很多被覆盖的方法，每个教程都有不同的方式来完成接收通知。

我已经导入了这些

import Firebase
import FirebaseInstanceID
import UserNotifications
import FirebaseMessaging

然后是代表团

class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, MessagingDelegate{
...
}

那么这里是 willFinishLaunchWithOptions 方法

func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        FirebaseApp.configure()
        Messaging.messaging().delegate = self



        if #available(iOS 10.0, *) {
            // For iOS 10 display notification (sent via APNS)
            UNUserNotificationCenter.current().delegate = self
            let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
            UNUserNotificationCenter.current().requestAuthorization(
                options: authOptions,
                completionHandler: {_, _ in })
            // For iOS 10 data message (sent via FCM
        } else {
            let settings: UIUserNotificationSettings =
                UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
            application.registerUserNotificationSettings(settings)

        }

        application.registerForRemoteNotifications()


        return true
    }

这里是Messaging 委托函数。

func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
        print("MEssage ->  \(remoteMessage.appData)")
    }

    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
        print("Firebase registration token: \(fcmToken)")
    }

该函数在用于设置 apns 令牌的 Firebase 文档中。

func application(application: UIApplication,
                     didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
        Messaging.messaging().apnsToken = deviceToken as Data
    }

我已经从 FCM 发送了数百条通知，它在服务器端成功发送，但是当我记录收到的消息时，没有任何收入数据。

如果你问我为什么要在 willFinish 函数中实现配置，文档中有这样的注释。

        For devices running iOS 10 and above, you must assign the
     UNUserNotificationCenter's delegate property and FIRMessaging's 
delegate property. For example, in an iOS app, assign it in the 
applicationWillFinishLaunchingWithOptions: or 
applicationDidFinishLaunchingWithOptions: method of the app delegate.

如果您能提供任何帮助，我将不胜感激，因为目前很难看出它有什么问题。

Answer 1

1. 请检查您是否在项目功能中激活了推送通知

2. 创建开发 APNs 证书并将其添加到 Firebase 控制台项目设置

3. 在您的应用代理中

   import FirebaseMessaging
   import UserNotifications
   
   
   
   @UIApplicationMain
   class AppDelegate: UIResponder, UIApplicationDelegate, 
   UNUserNotificationCenterDelegate, MessagingDelegate {
   
   var window: UIWindow?
   
   
   func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
   
   
   
       //REMOTE NOTIFICATION
   
       if #available(iOS 10.0, *) {
           // For iOS 10 display notification (sent via APNS)
           UNUserNotificationCenter.current().delegate = self
   
           let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
       UNUserNotificationCenter.current().requestAuthorization(
               options: authOptions,
               completionHandler: {_, _ in })
       } else {
           let settings: UIUserNotificationSettings =
           UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
           application.registerUserNotificationSettings(settings)
       }
   
       application.registerForRemoteNotifications()
   
       Messaging.messaging().delegate = self
   
       let token = Messaging.messaging().fcmToken
       print("FCM token: \(token ?? "")")
   
   
       //Added Code to display notification when app is in Foreground
       if #available(iOS 10.0, *) {
           UNUserNotificationCenter.current().delegate = self
       } else {
           // Fallback on earlier versions
       }
   
   
       return true
   }
   
   
   func application(_ application: UIApplication,
                didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
       Messaging.messaging().apnsToken = deviceToken as Data
   }
   
   func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
       // Print full message.
       print(userInfo)
   
   }
   
   // This method will be called when app received push notifications in foreground
   @available(iOS 10.0, *)
   func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
   { completionHandler([UNNotificationPresentationOptions.alert,UNNotificationPresentationOptions.sound,UNNotificationPresentationOptions.badge])
   }
   
   
   // MARK:- Messaging Delegates
   func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
       InstanceID.instanceID().instanceID { (result, error) in
           if let error = error {
               print("Error fetching remote instange ID: \(error)")
           } else if let result = result {
               print("Remote instance ID token: \(result.token)")
           }
       }
   }
   
   
   func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
       print("received remote notification")
   }
   
   
   
   }
   

Answer 2

我正在使用 FirebaseMessaging v4.1.4 并启用了方法调配

application.registerForRemoteNotifications() --> 首先

Messaging.messaging().delegate = self --> 第二

您必须在请求远程通知后设置消息代理。 （我注意到您在请求许可之前调用它）

在我的情况下，因为我在 iOS 13 的 didRegisterForRemoteNotificationsWithDeviceToken 方法中没有收到 APNS 令牌之前调用了它，而生成了 firebase 令牌。

可能是因为没有生成 APNS 并且 firebase 没有映射到 APNS 令牌，您可能没有收到任何通知。

Answer 3

他们说 警告：要以这种方式使用 FCM 直接通道，您必须使用旧版 HTTP API 发送消息。 HTTP v1 API 对发送到 iOS 设备的所有消息使用 APN。 你需要把 Messaging.messaging().shouldEstablishDirectChannek = true

Answer 4

我在 ios 13 设备上遇到了同样的问题。但它在 ios 13 以下的设备上运行良好。 问题是没有在 ios 13 设备上调用 didRegisterForRemoteNotificationsWithDeviceToken 方法。 经过一番研究，我发现这是由于网络连接问题。然后我从我的办公室wifi切换到蜂窝网络，之后它工作了。 didRegisterForRemoteNotificationsWithDeviceToken 返回了设备令牌。

Answer 5

我回答了一个类似的问题here。

关键步骤是在 Capabilities 中启用“推送通知”。

祝大家编码愉快！