无法从didFinishLaunchingWithOptions函数获取launchOptions数据

Question

我的应用程序需要从Remotenotification获取一些数据，以便将首页推送到特定的页面（例如FACEBOOK应用程序），但现在我无法从始终显示的didFinishLaunchingWithOptions函数中获取launchOptions数据：

无法使用类型为“（String）”的参数列表调用“ objectForKey”。

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

    let userNotificationTypes = (UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound)

    // Register for Push Notitications, if running iOS 8
    if application.respondsToSelector("registerUserNotificationSettings:") {
        let settings:UIUserNotificationSettings = UIUserNotificationSettings(forTypes: userNotificationTypes, categories: nil)
        application.registerUserNotificationSettings(settings)
        application.registerForRemoteNotifications()

    } else {
        // Register for Push Notifications before iOS 8
        application.registerForRemoteNotificationTypes( UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound | UIRemoteNotificationType.Alert )
    }

    if let launchOpts = launchOptions {
        var notificationPayload: NSDictionary = launchOptions.objectForKey(UIApplicationLaunchOptionsRemoteNotificationKey) as NSDictionary
        //Cannot invoke 'objectForKey' with an argument list of type '(String)'.
    }

    return true
}

Answer 1

请尝试以下方法：

if let notification = launchOpts[UIApplicationLaunchOptionsRemoteNotificationKey] as? [NSObject : AnyObject] {

    // extra work           
}