ios – 警告：UIAlertController已经呈现

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我是 swift和XCode的新手所以请原谅我可能非常混乱的代码！
运行我的代码时,我收到以下警告：
警告：尝试出示已经出现的内容

我已经检查了论坛并发现了一个关于该问题的帖子….我应用了建议的帮助,如：

  1. if presentedViewController !== nil {
  2.      self.presentViewController(alertController,animated: true,completion: nil)
  3. } else{
  4.      self.dismissViewControllerAnimated(false,completion: nil)
  5.      self.presentViewController(alertController,completion: nil)
  6. }

但是,它仍然给了我同样的警告….所以我想我一定做错了.如果有人可以帮助我,那将是很棒的:)如果有任何关于我如何“清理”我的代码的建议,我感激不尽:)

  1. import UIKit
  2.  
  3. class ViewController: UIViewController {
  4.  
  5. @IBOutlet var Label: UILabel!
  6.  
  7. @IBOutlet var ukFlag: UITextView!
  8.  
  9. @IBOutlet var movie: UITextView!
  10.  
  11. @IBOutlet var piano: UITextView!
  12.  
  13. @IBOutlet var book: UITextView!
  14.  
  15. @IBOutlet var dance: UITextView!
  16.  
  17. @IBOutlet var paint: UITextView!
  18.  
  19. @IBOutlet var row: UITextView!
  20.  
  21. @IBOutlet var envelope: UITextView!
  22.  
  23. @IBOutlet var dragon: UITextView!
  24.  
  25. @IBOutlet var instagram: UITextView!
  26.  
  27.  
  28. func londonPuzzle(sender: UIPanGestureRecognizer) {
  29.     let translation = sender.translationInView(self.view)
  30.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,y: sender.view!.center.y + translation.y)
  31.     sender.setTranslation(CGPointZero,inView: self.view)
  32.       self.ifCollided()
  33.  
  34.  
  35. }
  36.  
  37.  
  38. func misleadOne(sender: UIPanGestureRecognizer) {
  39.  
  40.     let translation = sender.translationInView(self.view)
  41.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  42.     self.ifCollided()
  43.  
  44. }
  45.  
  46. func bestival(sender: UIPanGestureRecognizer) {
  47.     let translation = sender.translationInView(self.view)
  48.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  49.       self.ifCollided()
  50.  
  51.     }
  52.  
  53. func rosieProject(sender: UIPanGestureRecognizer) {
  54.     let translation = sender.translationInView(self.view)
  55.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  56.     self.ifCollided()
  57.  
  58. }
  59.  
  60. func misleadTwo(sender: UIPanGestureRecognizer) {
  61.     let translation = sender.translationInView(self.view)
  62.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  63.     self.ifCollided()
  64.  
  65. }
  66.  
  67. func misleadThree(sender: UIPanGestureRecognizer) {
  68.     let translation = sender.translationInView(self.view)
  69.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  70.     self.ifCollided()
  71.  
  72. }
  73.  
  74. func misleadFour(sender: UIPanGestureRecognizer) {
  75.     let translation = sender.translationInView(self.view)
  76.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  77.     self.ifCollided()
  78.  
  79. }
  80. func voucher(sender: UIPanGestureRecognizer) {
  81.     let translation = sender.translationInView(self.view)
  82.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  83.     self.ifCollided()
  84.  
  85. }
  86.  
  87. func welsh(sender: UIPanGestureRecognizer) {
  88.     let translation = sender.translationInView(self.view)
  89.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  90.     self.ifCollided()
  91.  
  92. }
  93.  
  94. func hulk(sender: UIPanGestureRecognizer) {
  95.     let translation = sender.translationInView(self.view)
  96.     sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x,inView: self.view)
  97.     self.ifCollided()
  98.  
  99. }
  100.  
  101. func ShowAlertWrong(){
  102.  
  103.     let alertController = UIAlertController(title: "Sorry",message:   " Guess again!",preferredStyle: .Alert)
  104.  
  105.     let okAction = UIAlertAction( title: "Ok",style:   UIAlertActionStyle.Default) {
  106.         UIAlertAction in
  107.  
  108.         self.ukFlag.center = CGPointMake(150,225)
  109.         self.movie.center = CGPointMake(150,225)
  110.         self.piano.center = CGPointMake(150,225)
  111.         self.dance.center = CGPointMake(150,225)
  112.         self.paint.center = CGPointMake(150,225)
  113.         self.row.center = CGPointMake(150,225)
  114.         self.envelope.center = CGPointMake(150,225)
  115.         self.dragon.center = CGPointMake(150,225)
  116.         self.instagram.center = CGPointMake(150,225)
  117.     }
  118.  
  119.     let resetAction = UIAlertAction( title: "Reset",style: UIAlertActionStyle.Default) {
  120.         UIALertAction in
  121.  
  122.         self.ukFlag.center = CGPointMake(150,225)
  123.  
  124.     }
  125.  
  126.     alertController.addAction(okAction)
  127.     alertController.addAction(resetAction)
  128.     self.presentViewController(alertController,completion: nil)
  129.  
  130. }
  131.  
  132.  
  133.  
  134.  
  135. func ShowAlertWin(){
  136.  
  137.  
  138.  
  139.     let alertController = UIAlertController(title: "Congrats

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