昨晚我在应用程序中使用FCM测试推送通知，结果崩溃了（几天前还在工作）。我用firebase控制台中的通知菜单测试了它。
我进一步调查了通知有效载荷格式的变化，不包括像Apple Documentation中那样的iOS格式。
我重新检查我的APNs证书和开发一个不见了，我试图重新上传证书，它得到了类似这样的错误。
我向firebase团队提交了一份反馈，他们说这是他们最终的问题。（注：我也在上面的链接中发布了firebase团队的回应）。我的Dev APNs证书回来了，但格式仍然相同。
这是我得到的负载（来自Swift Print函数）

{
    "collapse_key" = "com.xxx.xxx";
    from = xxx;
    notification =     {
        badge = 3;
        body = "Firebase console";
        e = 1;
        title = Test;
    };
}

而这个payload使得iOS不会显示推送通知.
基于this FCM documentation for iOS
下面的代码将使应用程序崩溃时通知到来

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject],
                 fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
  // If you are receiving a notification message while your app is in the background,
  // this callback will not be fired till the user taps on the notification launching the application.
  // TODO: Handle data of notification

  // Print message ID.
  print("Message ID: \(userInfo["gcm.message_id"]!)")

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

• 我已经尝试重新上传我的Dev APNs证书，但仍然错误
• 我还提交了另一个反馈，但Firebase团队尚未回复

我错过了什么吗？

• • 编辑：**

就像我上面说的，几天前它就工作了，当这个问题出现时它就崩溃了。
具体来说，这一行会使应用程序崩溃，我怀疑这是因为有效负载格式改变了（aps有效负载丢失）。

print("Message ID: \(userInfo["gcm.message_id"]!)")

代码在删除时运行良好（并生成上面），但我仍然没有得到aps有效载荷格式，所以当应用程序在后台时，通知永远不会弹出。此外，我的通知处理程序将不工作时，应用程序在前台。

• • 编辑2**：

我已在AppDelegate中注册通知

let setting = UIUserNotificationSettings(forTypes: [.Sound, .Alert, .Badge] , categories: nil)
    application.registerUserNotificationSettings(setting)
    application.registerForRemoteNotifications()

我知道这一点，并已启用推送通知和远程通知后台模式。

• • 编辑2016年6月28日**：

我再次尝试从firebase控制台推送通知，仍然得到了相同的有效载荷格式

%@ [notification: {
    badge = 2;
    body = "Test Message";
    e = 1;
    sound = default;
    sound2 = default;
    title = Test;
}, collapse_key: com.xxx, from: 717xxxxxx]

我的FCM Firebase控制台设置如下所示

• • 编辑2016年7月8日**：

这是我的AppDelegate代码

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, GIDSignInDelegate {

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

        // Firebase 
        let setting = UIUserNotificationSettings(forTypes: [.Sound, .Alert, .Badge] , categories: nil)
        application.registerUserNotificationSettings(setting)
        application.registerForRemoteNotifications()

        FIRApp.configure()

        print(FIRInstanceID.instanceID().token())

        FIRAnalytics.logEventWithName(kFIREventAppOpen, parameters: nil)

        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(tokenRefreshNotificaiton), name: kFIRInstanceIDTokenRefreshNotification, object: nil)

        return true
    }

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

    func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
        // If you are receiving a notification message while your app is in the background,
        // this callback will not be fired till the user taps on the notification launching the application.
        // TODO: Handle data of notification

        // Print message ID.
//        print("Message ID: \(userInfo["gcm.message_id"]!)")

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

        var body = ""
        var title = "20Fit"

        guard let aps = userInfo["aps"] as? [String : AnyObject] else {
            print("Error parsing aps")
            return
        }

        if let alert = aps["alert"] as? String {
            body = alert
        } else if let alert = aps["alert"] as? [String : String] {
            body = alert["body"]!
            title = alert["title"]!
        }

        let banner = Banner(title: title, subtitle: body, image: nil, backgroundColor: UIColor.blackColor(), didTapBlock: nil)
        banner.show(duration: 5.0)
    }

    func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
           FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: .Sandbox)
    }

    func tokenRefreshNotificaiton(notification: NSNotification) {
        let refreshedToken = FIRInstanceID.instanceID().token()!
        print("InstanceID token: \(refreshedToken)")

        sendTokenToServer()

        // Connect to FCM since connection may have failed when attempted before having a token.
        connectToFcm()
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
        FIRMessaging.messaging().disconnect()
        print("Disconnected from FCM")
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        connectToFcm()
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
        FIRAnalytics.logEventWithName("app_terminated", parameters: nil)
    }

}

以下是我的应用程序的完整日志

2016-07-08 19:26:48.022 20FIT Member[2525:1122556] WARNING: Firebase Analytics App Delegate Proxy is disabled. To log deep link campaigns manually, call the methods in FIRAnalytics+AppDelegate.h.
2016-07-08 19:26:48.273 20FIT Member[2525:1122556] Configuring the default app.
2016-07-08 19:26:48.318 20FIT Member[2525:] <FIRAnalytics/DEBUG> Debug mode is on
2016-07-08 19:26:48.338 20FIT Member[2525:] <FIRAnalytics/INFO> Firebase Analytics v.3200000 started
2016-07-08 19:26:48.338 20FIT Member[2525:] <FIRAnalytics/INFO> To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled (see google link)
2016-07-08 19:26:48.343: <FIRInstanceID/WARNING> Failed to fetch APNS token Error Domain=com.firebase.iid Code=1001 "(null)"
2016-07-08 19:26:48.350: <FIRMessaging/INFO> FIRMessaging library version 1.1.0
2016-07-08 19:26:48.339 20FIT Member[2525:] <FIRAnalytics/DEBUG> Debug logging enabled
2016-07-08 19:26:48.365 20FIT Member[2525:] <FIRAnalytics/DEBUG> Uploading data. Host: https://play.googleapis.com/log
2016-07-08 19:26:48.366 20FIT Member[2525:] <FIRAnalytics/DEBUG> Firebase Analytics is monitoring the network status
Optional("cXwsIWfiJas:APA91bGjUnL-oztH9LntO4EaKdJxPQN_-Za5ydC-hPR-_HPZXNm4m_mzqSztvbBG7HczNN5Jr7Btr8h4ETF5FyOOUn8Ombk4c3RoTL6GDFrh6BnG0ECs_r_Hqx1dnVHeJVwLQo4JInn2")
2016-07-08 19:26:48.406 20FIT Member[2525:] <FIRAnalytics/DEBUG> Successfully parsed a configuration. Version: 1464617411301000
2016-07-08 19:26:48.429 20FIT Member[2525:] <FIRAnalytics/DEBUG> Firebase Analytics is ready to receive events
2016-07-08 19:26:48.432 20FIT Member[2525:] <FIRAnalytics/DEBUG> No network. Upload task will not be scheduled
2016-07-08 19:26:48.434 20FIT Member[2525:] <FIRAnalytics/DEBUG> Cancelling background upload task.
2016-07-08 19:26:48.437 20FIT Member[2525:] <FIRAnalytics/DEBUG> Scheduling user engagement timer
2016-07-08 19:26:48.438 20FIT Member[2525:] <FIRAnalytics/DEBUG> Timer scheduled to fire in approx. (s): 3600
2016-07-08 19:26:48.441 20FIT Member[2525:] <FIRAnalytics/INFO> Firebase Analytics enabled
2016-07-08 19:26:48.445 20FIT Member[2525:] <FIRAnalytics/DEBUG> Logging event: origin, name, params: app, app_open, {
        "_o" = app;
    }
2016-07-08 19:26:48.477 20FIT Member[2525:] <FIRAnalytics/DEBUG> Scheduling user engagement timer
2016-07-08 19:26:48.478 20FIT Member[2525:] <FIRAnalytics/DEBUG> Canceling active timer
2016-07-08 19:26:48.479 20FIT Member[2525:] <FIRAnalytics/DEBUG> Timer scheduled to fire in approx. (s): 3600
2016-07-08 19:26:48.562 20FIT Member[2525:] <FIRAnalytics/DEBUG> Network status has changed. code, status: 2, Connected
2016-07-08 19:26:48.566 20FIT Member[2525:] <FIRAnalytics/DEBUG> Network status has changed. code, status: 2, Connected
2016-07-08 19:26:48.618 20FIT Member[2525:] <FIRAnalytics/DEBUG> Event logged. Event name, event params: app_open, {
        "_o" = app;
    }
2016-07-08 19:26:48.635 20FIT Member[2525:] <FIRAnalytics/DEBUG> Timer scheduled to fire in approx. (s): 3143.319384038448
2016-07-08 19:26:48.636 20FIT Member[2525:] <FIRAnalytics/DEBUG> Upload task scheduled to be executed in approx. (s): 3143.319384038448
2016-07-08 19:26:48.637 20FIT Member[2525:] <FIRAnalytics/DEBUG> Do not schedule an upload task. Task already exists
2016-07-08 19:26:48.710 20FIT Member[2525:] <FIRAnalytics/DEBUG> Received SSL challenge for host. Host: https://play.googleapis.com/log
2016-07-08 19:26:49.408 20FIT Member[2525:] <FIRAnalytics/DEBUG> Uploading data. Host: https://play.googleapis.com/log
Connected to FCM.
2016-07-08 19:26:49.869 20FIT Member[2525:] <FIRAnalytics/DEBUG> Received SSL challenge for host. Host: https://play.googleapis.com/log
2016-07-08 19:26:50.206 20FIT Member[2525:] <FIRAnalytics/DEBUG> Uploading data. Host: https://play.googleapis.com/log
2016-07-08 19:26:50.723 20FIT Member[2525:] <FIRAnalytics/DEBUG> Received SSL challenge for host. Host: https://play.googleapis.com/log
%@ [notification: {
    badge = 2;
    body = "Test Message";
    e = 1;
    sound = default;
    sound2 = default;
    title = Yoiii;
}, collapse_key: com.xxx.xxx, from: 717xxxx]
Error parsing aps