Notifications requestAuthorization结果在ApplicationIDBECOMEACTIVE中无效

为了获得显示通知的权限，我请求system，它返回结果ok，但同时调用了

ApplicationIDBecomeActive

，当我检查

UIApplication.sharedApplication（）.currentUserNotificationSettings（）

时，它是1，被拒绝

...
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) {(accepted, error) in
        if !accepted {
            print("Notification access denied.")
        }
    }
....

func applicationDidBecomeActive(application: UIApplication) {


    let grantedSettings = UIApplication.sharedApplication().currentUserNotificationSettings()
    let value= grantedSettings!.types.rawValue 
    // value is now 1, why?!
}