注册iOS推送通知时出现奇怪的行为

Question

这是我在AppDelegate中输入的用于注册推送通知的代码：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {  
    let notificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound
    let settings = UIUserNotificationSettings(forTypes: notificationTypes, categories: nil)
    UIApplication.sharedApplication().registerUserNotificationSettings(settings)
    return true
}

func application(application:UIApplication!, didRegisterForUserNotificationSettings notificationSettings:UIUserNotificationSettings) {
    println("[AppDelegate][didRegisterForUserNotificationSettings]")
    UIApplication.sharedApplication().registerForRemoteNotifications()
}

func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
    println("[AppDelegate][didFailToRegisterForRemoteNotificationsWithError]")
    println(error)
}

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    println("[AppDelegate][didRegisterForRemoteNotificationsWithDeviceToken]")
    println(deviceToken)
}

当我通过Xcode 6.1.1在我的iPhone上启动应用程序时，没有任何反应，我看不到我的println输出，但是当我离开应用程序并转到设置 - ＆gt;通知我发现我的应用程序启用了推送通知。

由于未调用didRegisterForRemoteNotificationsWithDeviceToken，我无法获得deviceToken

我做错了什么？

Answer 1

也许问题是，在app完成启动时调用的app delegate方法返回registerForRemoteNotifications()后，您正在调用true。试试这个：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {  
    let notificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound
    let settings = UIUserNotificationSettings(forTypes: notificationTypes, categories: nil)

    application.registerUserNotificationSettings(settings)
    application.registerForRemoteNotifications() 

    return true
}

Answer 2

我去了手机的设置 - ＆gt;去一般 - ＆gt;通知 - ＆gt;选择你的应用 - ＆gt;通知中心 - ＆gt;把它改成10！更改后我开始获取设备令牌数据！