title: setting background image of UISegmentedControl
body: <p>So I have the following code to set the segmented control background color:</p>
  
  <pre><code>UISegmentedControl * segmentedCtrl = [[UISegmentedControl alloc] initWithFrame:CGRectMake(0, 0, 150, 35)];
  [segmentedCtrl setBackgroundImage:[UIImage imageNamed:@"btn-gradient-brown"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
  [segmentedCtrl setBackgroundImage:[UIImage imageNamed:@"btn-gradient-brown"] forState:UIControlStateSelected barMetrics:UIBarMetricsDefault];
  [segmentedCtrl insertSegmentWithImage:[UIImage imageNamed:@"icon-home.png"] atIndex:0 animated:NO];
  [segmentedCtrl insertSegmentWithImage:[UIImage imageNamed:@"icon-star.png"] atIndex:1 animated:NO];
  </code></pre>
  
  <p>It all works fine except that when I click on the segment I can see the blue button highlighted. How do I disable this highlight? Here's a screenshot of my problem:</p>
  
  <p><img src="https://i.stack.imgur.com/GFxX9.png" alt="enter image description here"></p>