title: How to make navigation bar transparent in iOS 7?
body: <p>Is there a way to make the bar of a navigation controller totally transparent?</p>
  
  <p>What i've tried:</p>
  
  <pre><code>[self.navigationController.navigationBar setBackgroundColor:[UIColor clearColor]];
  [self.navigationController.navigationBar setBarTintColor:[UIColor clearColor]];
  [self.navigationController.navigationBar setAlpha:0.0];
  </code></pre>
  
  <p>but the bar's appearance does not change, and stays white translucent.
  I'm trying to get visible the bar items, but not the bar itself. Can someone point me in the right direction? Thanks</p>