title: How to change title of UINavigationController thats currently being displayed
body: <p>I have a view currently displayed by a UINavigationController. When the user changes a selection elsewhere, I need the currently displayed title displayed by the UINavigationController to change. Even though I change the title in the current view controller, I can't get the UINavigationController to refresh the title.</p>
  
  <p>I've tried all sorts of things and have not been successful changing the title.</p>
  
  <p>I am doing a [tableview reloadData] for the rest of the view, but that's not changing the title.</p>
  
  <p>In the view controller being displayed, I've tried the following</p>
  
  <pre><code>self.title = @"New title";
  </code></pre>
  
  <p>I've tried various combinations of setNeedsDisplay, setNeedsLayout on both the self.view and self.navigationController.view.</p>
  
  <p>Nothing has successfully changed the title on the nav bar.</p>
  
  <p>Thanks</p>