title: How do you zoom a UIScrollView's content to fit
body: <p>My UIScrollView on the iPhone is 480x230 and the content is 972x230 when first displayed. I need to provide functionality where when the user double taps the UIScrollView the contents zoom to fit with the 480x230 UIScrollView proportionally. When the double tap it again it should zoom back out to it's original size.</p>
  
  <p>What is the best way to do this? I have been fumbling for several hours with this and thought that this would work...</p>
  
  <pre><code>[bodyClockScrollView zoomToRect:bodyClockScrollView.frame animated:YES];
  </code></pre>
  
  <p>But nothing seems to happen.</p>
  
  <p>Thanks, any help pointing me in the right direction would be appreciated.</p>