title: how to add a NavigationController to a UIViewController?
body: <p>I need to add a UINavigationController to a UIViewController,and don't use appDelegate.In my Controller I write like this</p>
  
  <pre><code>OneViewController *oneVC = [[OneViewControlelr alloc] initWithNibName:nil bundle:nil];
  UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:oneVC];
  
  [self presendModalViewController:nav];
  </code></pre>
  
  <p>and it nothing to found.</p>