title: UIButton background Image in IOS7
body: <p>I am setting my background image for <code>UIButton</code>, it's working fine for iOS6 but for highlighted state in iOS7 not working.</p>
  
  <pre><code>[clearButton setBackgroundImage:[UIImage imageNamed:@"back-over@2x.png"] forState:UIControlStateHighlighted];
  
  [clearButton setBackgroundImage:[UIImage imageNamed:@"btn@2x~ipad.png"] forState:UIControlStateNormal];
  </code></pre>
  
  <p>What could be the problem?</p>