title: how to make my win label stay hidden until the user win?
body: <p>am trying to make my label hidden by changing the x and y parameter but when i start playing the game and on the first click suddenly the label appear i tried the alpha way and all the other way to hide a label were fine except this one.</p>
  
  <p><strong>this my code:</strong></p>
  
  <pre><code>import UIKit
  
  class ViewController: UIViewController {
  
      @IBOutlet weak var button1: UIButton!
      @IBOutlet weak var label: UILabel!
      @IBOutlet weak var imageView: UIImageView!
  
  
      var goNumber = 1
  
      var gameState = [0, 0, 0, 0, 0, 0, 0, 0, 0]
  
      let winnerCombination = [[0, 1, 2], [3, 4, 5], [6, 7, 8], [0, 3, 6], [1, 4, 7], [2, 5, 8], [0, 4, 8], [2, 4, 6]]
  
      var winner = 0
  
  
      override func viewDidLoad() {
          super.viewDidLoad()
          // Do any additional setup after loading the view, typically from a nib.
      }
  
  
    override func viewDidAppear(animated: Bool) {
          self.label.center = CGPointMake(self.label.center.x - 400, self.label.center.y)
  
      }
  
  
      override func didReceiveMemoryWarning() {
          super.didReceiveMemoryWarning()
          // Dispose of any resources that can be recreated.
      }
          @IBAction func buttonPressed(sender: UIButton) {
  
          if gameState[sender.tag] == 0 {
              var image = UIImage(named: "")
              if goNumber % 2 == 0 {
                  image = UIImage(named: "cross.png")
                  gameState[sender.tag] = 1
              }
              else{
                  image = UIImage(named: "nought.png")
                  gameState[sender.tag] = 2
              }
              for combination in winnerCombination {
  
                  if (gameState[combination[0]] == gameState[combination[1]] &amp;&amp; gameState[combination[0]] == gameState[combination[2]] &amp;&amp; gameState[combination[0]] != 0) {
  
                      winner = gameState[combination[0]]
  
                      println("the winner is \(winner)")
                  }
              }
              if winner != 0 {
  
                  if winner == 1 {
                      label.text = "cross won"
                  }
                  else {
                      label.text = "nought won"
                  }
                  UIView.animateWithDuration(0.5, animations: {
                      self.label.center = CGPointMake(self.label.center.x + 400, self.label.center.y)
  
                      self.label.alpha = 1
                  })
              }
              sender.setImage(image, forState: .Normal)
              goNumber++
          }
      }
  }
  </code></pre>