title: iOS - loading navigation controller via code
body: <p>I have a navigation controller that was setup via the project wizard.  Currently when the application is launched the navigation controller automatically gets created and displayed.</p>
  
  <p>I now need to control the display of the navigation controller via code instead of via the .xib magic.  How do I disable the automatic creation of the MainWindow.xib/RootViewController.xib?  I confess I don't actually know what's going on and the relationship between MainWindow.xib and RootController.xib as the wizard set all this up.</p>
  
  <p>Any references or code snippets on this would be helpful..
  thanks!</p>