title: popToRootViewControllerAnimated question
body: <p>I've got next question - why my app dont waiting when i call</p>
  
  <pre><code>[navController popToRootViewControllerAnimated:NO];
  ... set new viewcontrollers here
  </code></pre>
  
  <p>I want:</p>
  
  <p>1/ Kill all viewcontrollers by call popToRootViewControllerAnimated - with NO parameter - then i think i can immediately set new view controllers</p>
  
  <p>2/ set new view controllers</p>
  
  <p>But in my logs i see next:</p>
  
  <blockquote>
    <p>call poptorootview controller</p>
    
    <p>code after poptorootview</p>
    
    <p>dealloc of views and controller (because i call poptorootview)</p>
  </blockquote>
  
  <p>Why ? How can I detect that all views is killed and navigation controller is poping to root ?
  Thanks,</p>