title: UIScrollView not scrolling when included into viewcontroller embedded into a navigation controller
body: <p>I have made a view controller embedded in a navigation controller.  In the view controller, I have inserted a scroll view that contains some buttons and text fields.  In the <code>viewDidLoad</code> method, I have inserted the following code to initialize the <code>scrollView</code>:</p>
  
  <pre><code>[scroller setScrollEnabled:YES];
  [scroller setContentSize:CGSizeMake:(1000, 1000)];
  </code></pre>
  
  <p>But the view does not scroll.  I have tried the same scenario but without embedding the view controller into a navigation controller and it was working.  Does anyone know the problem? Thanks.</p>