title: Asynchronous function execution?
body: <p>in my iOS app I do the following.</p>
  
  <pre><code>viewDidAppear(){
  
     // Load a spinner in a view on the top
     [DSBezelActivityView newActivityViewForView:self.view]; 
     // Execute code that require 3 seconds
     ...
     // Stop the spinner
     [DSBezelActivityView removeViewAnimated:YES];
  }
  </code></pre>
  
  <p>The problem is that the spinner doesn't appear, because the the cpu is working hard (something similar). It's like that the code betweek the start and stop has precedence on the rendering of the view.</p>
  
  <p>I would love to find a way to show effectively the start of the spinner, without using a timer to delay the code execution.</p>
  
  <p>Thanks</p>