title: How can I make my UINavigationBar totally transparent on iOS7?
body: <p>I'm working on making an application iOS7-compatible, and I'm encountering a problem with UINavigationBar that's driving me crazy: </p>
  
  <p><strong>I want to make my navigationBar totally transparent, without any blur or backgroundPicture, but containing and displaying navigationItem buttons.</strong></p>
  
  <p>In iOS6, I used to make that this way:</p>
  
  <pre><code>UIImage *maskedImage = [UIImage imageNamed:@"transparent_image.png"]
  [navigationBar setBackgroundImage:maskedImage forBarMetrics:UIBarMetricsDefault];
  </code></pre>
  
  <p>But it doesn't work anymore on iOS7.</p>
  
  <p><strong>Any suggestions ?</strong></p>