title: Correct way to zoom UIScrollView with many images?
body: <p>Which is the correct way to zoom an image in a UIScrollView with many images?</p>
  
  <p>In depth, i have a contentView (UIView) with all the UIImageView(s) as subviews.</p>
  
  <p>I'm trying to return the current showed UIImageView in viewForZoomingInScrollView: but this doesn't work :-(</p>
  
  <pre><code>func viewForZoomingInScrollView(scrollView: UIScrollView) -&gt; UIView? {
      return imageViews[self.currentIndex]
  }
  </code></pre>