title: Setting UINavigationbar properties in viewDidLoad does nothing
body: <p>I've tried setting the style of the UINavigationbar to be a translucent style in the viewDidLoad method of my controller. But nothing is changed. Why?</p>
  
  <p>I set the property using the standard code like</p>
  
  <pre><code>self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
  </code></pre>