swift - PopUpViewController が複数回ポップアップすることはありません。迅速

Question

インデックスがゼロにPopUpViewControllerSwiftなるまで、何度もポップアップしたいものがあります。alreadyMatchedこれは私がポップアップ、コードを実行する方法です:

var alreadyMatched = [0,1,2]   

class QuestionsGame: UIViewController {

         var popUpViewController = PopUpViewControllerSwift()

   override func viewDidLoad() {
    super.viewDidLoad()

       matched()
}


    func matched() { 

        var a = alreadyMatched.count   
        if a > 0 {

            self.view.addSubview(self.popUpViewController.view)
            self.addChildViewController(self.popUpViewController)
            self.popUpViewController.setValues(UIImage(named: "hot.png"), messageText: "You have matched!!", congratsText: "Snap!")
            self.popUpViewController.didMoveToParentViewController(self)
            alreadyMatched.removeLast()
            }
        }
}

PopUpViewControllerSwiftコードは次のとおりです。

@objc class PopUpViewControllerSwift : UIViewController {

    var popUpUserImage: UIImageView!
    var messageLabel: UILabel!
    var popUpView: UIView!
    var congratsLabel: UILabel!
    var matchedOrNot = 2

    var matchedUser : PFUser!

    override func viewDidLoad() {
        super.viewDidLoad()

    }


    func setValues(image : UIImage!, messageText : String, congratsText : String) {
        self.popUpUserImage!.image = image
        self.messageLabel!.text = messageText
        self.congratsLabel.text = congratsText
    }

    func showAnimate()
    {
        self.view.transform = CGAffineTransformMakeScale(1.3, 1.3)
        self.view.alpha = 0.0;
        UIView.animateWithDuration(0.25, animations: {
            self.view.alpha = 1.0
            self.view.transform = CGAffineTransformMakeScale(1.0, 1.0)
        });
    }

    func removeAnimate()
    {
        UIView.animateWithDuration(0.25, animations: {
            self.view.transform = CGAffineTransformMakeScale(1.3, 1.3)
            self.view.alpha = 0.0;
            }, completion:{(finished : Bool)  in
                if (finished)
                {
                    self.view.removeFromSuperview()
                    let sb = UIStoryboard(name: "Main", bundle: nil)
                      let questionsVC =   sb.instantiateViewControllerWithIdentifier("Questions") as! QuestionsGame
                      questionsVC.timer()

                }
        })
    }
}

なんらかの理由で、これは 1 回だけ表示され、繰り返し表示されませんか? 私はそれがParentViewControllerと関係があると確信していますか?