title: How to present a second ViewController & dismiss the first
body: <p>using the following code in the parent ViewController, I want to present a second view ontop of the first, then dismiss the first:</p>
  
  <pre><code>// Animates the next questionViewController using the first questionViewController
  [previousView presentViewController:nextQuestionViewController animated:YES completion:nil];
  
  // Dismiss the first questionViewController
  [previousView dismissViewControllerAnimated:NO completion:nil];
  </code></pre>
  
  <p>When run, the second view is presented, but the first view will not dismiss.</p>