title: ios UIButton touch cancel
body: <p>Is there a way to cancel a touch for a <code>UIButton</code>? I envision it as something like:</p>
  
  <pre><code>- (BOOL)shouldProcessTouch {
      return NO;
  }
  </code></pre>
  
  <p>You know, a place where you can run logic and <em>cancel</em> the touch in certain scenarios. Any ideas?</p>
  
  <p>** EDIT **</p>
  
  <p>For those familiar with event based systems, I'm looking for the equivalent of:
  <code>event.stopPropagation();</code></p>