问在设置中授权后ABAddressBookGetAuthorizationStatus被拒绝

EN

ABAddressBookRequestAccessWithCompletion(nil) {
    (granted:Bool, err:CFError!) in
    if(granted){
        // Get contacts
    }
}

func evaluateContactAccess(requestCompleted: (granted: Bool) -> ()) {
    let status = ABAddressBookGetAuthorizationStatus();
    switch status {
    case .Authorized:
        requestCompleted(granted: true);
    case .NotDetermined:
        ABAddressBookRequestAccessWithCompletion(nil) {
            (granted:Bool, err:CFError!) in
                requestCompleted(granted: granted);
        };
    case .Restricted, .Denied:
        let alertController = UIAlertController(
            title: "Contact Access Disabled",
            message: "Message about access here...",
            preferredStyle: .Alert)

        let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: nil)
        alertController.addAction(cancelAction)

        let openAction = UIAlertAction(title: "Open Settings", style: .Default) { (action) in

            if let url = NSURL(string:UIApplicationOpenSettingsURLString) {

                UIApplication.sharedApplication().openURL(url)
            }
        }
        alertController.addAction(openAction)

        self.presentViewController(alertController, animated: true, completion: nil);

        NSNotificationCenter.defaultCenter().addObserver(self, selector: "checkAndProceed", name: UIApplicationWillEnterForegroundNotification, object: nil)
    }
}

func checkAndProceed() {
    let status = ABAddressBookGetAuthorizationStatus()
    switch status {
    case .Authorized:
        // get contacts
    case .NotDetermined, .Restricted, .Denied:
        // debugger says status = .Denied at this point every time
    }
}