title: Defining the file a UIImage will use (Swift)
body: <p>So I looked around the developer library on apple's site and I couldn't find any documentation that said how to state what file (like a png) to use for a UIImage using the swift language. 
  So I try experimenting with this code:</p>
  
  <pre><code>class ViewController: UIViewController {
  
  @IBOutlet var maintitle: UIImageView
  
  var bigtitle: UIImage!
  var smalltitle: UIImage!
  
  
  override func viewDidLoad() {
      super.viewDidLoad()
      // Do any additional setup after loading the view, typically from a nib. 
  
      func startAnimating(){
          var animatedtitle: AnyObject[] = [bigtitle, smalltitle]
          var animationDuration: NSTimeInterval = 0.15
          var animationRepeatCount: Int = 0
      }
  }
  </code></pre>
  
  <p>What I was trying to do there was animate a never ending series of two images. I defined two UIImages (bigtitle &amp; small title) and was wondering how I define wat .png's to use for those UIImage's. I know this is a very basic and novice question but any help would be enjoyed.</p>