title: Customizing the BackBarButtonItem
body: <p>I'm trying to customize the backBarButtonItem with a custom image (the text 'back' is included in that image), here is the current result:</p>
  
  <p><a href="http://i.imgur.com/rFxFt.png">http://i.imgur.com/rFxFt.png</a></p>
  
  <p>Does anyone know why this might be happening?</p>
  
  <p>Here is my code on viewDidLoad (actually runs both on the parent controller and then again on the new controller that has the back button)</p>
  
  <pre><code>UIImage *backButtonImage = [UIImage imageNamed:@"Graphics/Shared/navigation_back_button.png"];
  
  
  UIBarButtonItem *backButton = [[UIBarButtonItem alloc] 
                                 initWithImage:backButtonImage
                                 style:UIBarButtonItemStylePlain 
                                 target:nil 
                                 action:nil];
  
  
  self.navigationItem.backBarButtonItem = backButton;
  </code></pre>
  
  <p>Edit: I'm using iOS 5 by the way! Maybe appearance proxy is usable but so far when I tried to use it for the back button stuff (in appDelegate) the app simple crashes.</p>