的iOS FCM通知在后台

Question

不工作我开发斯威夫特一个应用程序，必须使用FCM的通知服务。在我的应用程序中，FCM只能在前景而不在后台运行。

我已经尝试过多种方法，如：

• 禁用和启用混写方法
• 设置priority到high
• 在我的有效载荷改变data到notification

我也出现错误：

Failed to fetch APNS token Error Domain=com.firebase.iid Code=1001 "(null)" 

但通知工作前景没有任何问题。下面是我的AppDelegate：

@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate { 

    var window: UIWindow? 

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

     FIRApp.configure() 

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

     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) 
    } 

    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. 
    } 

    // [START receive_message] 
    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 

     let alertController = UIAlertController(title: "Notification", message: "A standard alert", preferredStyle: .Alert) 

     let OKAction = UIAlertAction(title: "OK", style: .Default) { (action:UIAlertAction!) in 

     } 
     alertController.addAction(OKAction) 

     self.window?.rootViewController?.presentViewController(alertController, animated: true, completion:nil) 

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

     // Print full message. 
     print("%@", userInfo) 
    } 
    // [END receive_message] 

    // [START refresh_token] 
    func tokenRefreshNotification(notification: NSNotification) { 
     if let refreshedToken = FIRInstanceID.instanceID().token() { 
      print("InstanceID token: \(refreshedToken)") 
     } 

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

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

    func applicationDidBecomeActive(application: UIApplication) { 
     connectToFcm() 
    } 

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

而且在我的服务器，我使用这样的推通知：

method: 'POST', 
      uri: 'https://fcm.googleapis.com/fcm/send', 
      headers: { 
       'Content-Type': 'application/json', 
       'Authorization':'key= **THE KEY**' 
      }, 
      body: JSON.stringify({ 
       "to" : " **USER INSTANCEID TOKEN** ", 
       "priority":"high", 
       "data" : { 
        "title": "FCM TITLE", 
        "body" : "FROM FCM", 
        "badge": "0", 
        "sound": "default" 
       } 
      }) 

我试着到处寻找，但找不到任何解决方案，并不能似乎在FCM文档中找到有关此问题的任何信息。

Answer 1

我在的iOS \雨燕相当新的...但我认为，也许这代码：

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

注销您火力云消息的每次应用程序转到后台...和这就是为什么你没有收到通知。

你可以尝试注释掉这个方法，看看是否可行？

LMK，谢谢。

Answer 2

尝试用true值@AL添加content_avaliable。说并添加一个notification对象。您可以发送带有两个参数（数据和通知）

这对我的作品的通知。

{ 
    "to" : " **USER INSTANCEID TOKEN** ", 
    "priority":"high", 
    "content_avaliable":true, 
    "data" : { 
     "title": "FCM TITLE", 
     "body" : "FROM FCM", 
     "badge": "0", 
     "sound": "default" 
    }, 
    "notification" : { 
     "title": "FCM TITLE", 
     "body" : "FROM FCM" 
    } 
} 

UPDATE： 只工作在我的iPad，iPhone手机中的行为仍在继续。