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，以便将第一页推送到特定页面，如FACEBOOK app，但现在我无法从didFinishLaunchingWithOptions函数获取launchOptions数据，它始终显示：

  

无法调用＆＃39; objectForKey＆＃39;使用类型＆＃39;（字符串）＆＃39;。

的参数列表

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

尝试以下方法：

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

    // extra work           
}