云消息处理终止应用程序

Question

我有一个将用户会话存储在 NSUserDefaults 中的应用程序。当应用程序被强制关闭时，在初始验证数据控制器用户会话是否存在，如果有则发送到启动窗口如下：

override func viewWillAppear(animated: Bool) {

    self.view.hidden = true

    let defaults = NSUserDefaults.standardUserDefaults()
    if   defaults.stringForKey("user") != nil
    {

        dispatch_async(dispatch_get_main_queue(), { () -> Void in
            let viewController:UIViewController = self.storyboard?.instantiateViewControllerWithIdentifier("vistaInicio") as! ViewControllerInicio
            self.presentViewController(viewController, animated: true, completion: nil)
        })


    }else
    {
    self.view.hidden = false

    }

}

直到今天，当我决定按照本教程 Setting up a Firebase Cloud Messaging Client App on iOS 更新 firebase 来实现推送通知时，这一直很顺利。当他杀死应用程序并再次输入时出现问题，并给出以下错误代码：

 2016-05-19 16:05:27.647: <FIRInstanceID/WARNING> Failed to fetch APNS token Error Domain=com.firebase.iid Code=1001 "(full)"
 2016-05-19 16:05:27.659: <FIRMessaging/INFO> FIRMessaging library version 1.1.0
 2016-05-19 16:05:27.831: <FIRMessaging/WARNING> FIRMessaging registration is not ready with auth credentials
Unable to connect with FCM. Optional(Error Domain=com.google.fcm Code=501 "(null)")

Answer 1

这是解决方案，

首先在 Firebase 控制台中上传必要的证书，然后在您的应用中启用推送通知和后台模式 -> 远程通知

之后在 App Delegate 中使用下面的代码（我指定了棘手的行）：

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    registerForPushNotifications(application)
    // Override point for customization after application launch.
    // Use Firebase library to configure APIs
    FIRApp.configure()
    return true
}

func registerForPushNotifications(application: UIApplication) {
    let notificationSettings = UIUserNotificationSettings(
        forTypes: [.Badge, .Sound, .Alert], categories: nil)
    application.registerUserNotificationSettings(notificationSettings)
}

func application(application: UIApplication, didRegisterUserNotificationSettings notificationSettings: UIUserNotificationSettings) {
    if notificationSettings.types != .None {
        application.registerForRemoteNotifications()
    }
}

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    let tokenChars = UnsafePointer<CChar>(deviceToken.bytes)
    var tokenString = ""

    for i in 0..<deviceToken.length {
        tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
    }

    //Tricky line
    FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.Unknown)
    print("Device Token:", tokenString)
}

Answer 2

不要忘记在 AppDelegate 中：

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

    registerForPushNotifications(application)
    FIRApp.configure()

    // Add observer for InstanceID token refresh callback.
    NSNotificationCenter
     .defaultCenter()
     .addObserver(self, selector: #selector(AppDelegate.tokenRefreshNotificaiton),
                                                     name: kFIRInstanceIDTokenRefreshNotification, object: nil)

    // Override point for customization after application launch.
    return true
  }

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


  func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject],
                   fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
    print("===== didReceiveRemoteNotification ===== %@", userInfo)
  }


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

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

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

请务必在 Info.plist 中做：FirebaseAppDelegateProxyEnabled = NO

我现在不知道，但我在didReceiveRemoteNotification 中得到了print(...)，但没有得到弹出窗口。我从 Firebase -> Console -> Notification -> Single device 发送消息，并在此处复制我从 Xcode Console -> func tokenRefreshNotificaiton

获得的令牌

Answer 3

答案是正确的这些是步骤，但也请检查您的设备时间。因为如果你的时间和日期太差了，它就不会起作用

Answer 4

在对整个集成进行三次检查后，对我来说，问题是测试设备的日期提前一周更改。 FCM SDK 可能会进行一些基于日期的检查。

Firebase 方面的错误可能不那么普遍，因为我花了将近一天的时间来寻找解决方案。希望这会有所帮助。