Swift didReceiveRemoteNotification 未调用

我有一个以 oneSignal 作为推送提供者的应用程序。我可以收到推送通知，效果很好。但如果我尝试访问推送有效负载，我什么也得不到didReceiveRemoteNotification没有被调用。

我有以下代码

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

 if application.applicationState != UIApplicationState.Background {

        let preBackgroundPush = !application.respondsToSelector("backgroundRefreshStatus")
        let oldPushHandlerOnly = !self.respondsToSelector("application:didReceiveRemoteNotification:fetchCompletionHandler:")
        var pushPayload = false
        if let options = launchOptions {
            pushPayload = options[UIApplicationLaunchOptionsRemoteNotificationKey] != nil
        }

    }
    if application.respondsToSelector("registerUserNotificationSettings:") {
        let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
        application.registerUserNotificationSettings(settings)
        application.registerForRemoteNotifications()
    } else {
        let types : UIRemoteNotificationType =  [.Badge, .Alert, .Sound]
        application.registerForRemoteNotificationTypes(types)
    }

}

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {

    if userInfo["d"] as! String == "t"  {

        print("key was received")

    }
    print(userInfo)
    print("PREVED")

}

问题是当我收到推送时没有打印任何内容。我究竟做错了什么 ？

在这个地方尝试一次你的委托方法

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {

称这个为

 func application(application: UIApplication,  didReceiveRemoteNotification userInfo: [NSObject : AnyObject],  fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {

    print("Recived: \(userInfo)")

    completionHandler(.NewData)

}