ios - Firebase 云消息传递 iOS : No background push notification

Question

当我的应用前景化时，使用带有方法调配的较新的 Firebase 云消息传递，我能够在我的应用委托(delegate)中的 didReceiveRemoteNotification 方法中成功接收有效负载。然而，当我的应用程序处于后台时，我没有得到任何类型的有效负载并且 didReceiveRemoteNotification 没有被调用，尽管 api 响应消息已成功发送(见下文)
这是我发送到 FCM api 以触发推送通知的请求 https://fcm.googleapis.com/fcm/send

{
"to": "{valid-registration-token}",
"priority":"high", //others suggested setting priority to high would fix, but did not
  "notification":{
      "body":"Body3",
      "title":"test"  
 } 
}

带有来自 FCM 的响应

{
      "multicast_id": 6616533575211076304,
      "success": 1,
      "failure": 0,
      "canonical_ids": 0,
      "results": [
        {
          "message_id": "0:1468906545447775%a4aa0efda4aa0efd"
        }
      ]
    }

这是我的 appDelegate 代码

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

        Fabric.with([Crashlytics.self])
        FIRApp.configure()

        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(self.tokenRefreshNotification),
                                                         name: kFIRInstanceIDTokenRefreshNotification, object: nil)
        return true
    }



    func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
        // Let FCM know about the message for analytics etc.
        FIRMessaging.messaging().appDidReceiveMessage(userInfo)

        // Print full message.
        print("%@", userInfo)

        // handle your message

//        let localNotification = UILocalNotification()
//        localNotification.fireDate = NSDate()
//        let notification = userInfo["notification"]!
//        localNotification.alertBody = notification["body"] as? String
//        localNotification.alertTitle = notification["title"] as? String
//        localNotification.timeZone = NSTimeZone()
//        application.scheduleLocalNotification(localNotification)

    }

    func tokenRefreshNotification(notification: NSNotification) {
        let refreshedToken = FIRInstanceID.instanceID().token()!
        print("InstanceID token: \(refreshedToken)")
        LoginVC.registerForPushNotifications()
        connectToFcm()
    }


    //foreground messages
    func applicationDidBecomeActive(application: UIApplication) {
        connectToFcm()
    }

    // [START disconnect_from_fcm]
    func applicationDidEnterBackground(application: UIApplication) {
        FIRMessaging.messaging().disconnect()
        print("Disconnected from FCM.")
    }


    func connectToFcm() {
        FIRMessaging.messaging().connectWithCompletion { (error) in
            if (error != nil) {
                print("Unable to connect with FCM. \(error)")
            } else {
                print("Connected to FCM.")
            }
        }
    }

}

我稍后在我的应用程序中调用此代码以请求权限

static func registerForPushNotifications() {
    let settings: UIUserNotificationSettings =
                UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
            UIApplication.sharedApplication().registerUserNotificationSettings(settings)
            UIApplication.sharedApplication().registerForRemoteNotifications()
}

由于我能够在应用程序处于前台状态时收到通知，我认为这将消除所有关于我的 apns 证书未上传或注册 token 不正确的担忧。如果不是这种情况，请发表评论，我会再次进入那个兔子洞。 我可能忽略了一些简单的事情，但是如何在应用程序后台运行时显示通知？谢谢

Answer 1

显然，(尽管使用应该自动执行的方法调配)您仍然必须在 Firebase 实例上设置 APNS token 。因此，这意味着您还必须使用类似

的方法实现 didRegisterForRemoteNOtificationsWithDeviceToken 方法

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {


        // set firebase apns token
        FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.Unknown)
}

作为补充说明。使用 "priority":"high" 对测试很有用，因为它会立即发送通知。