title: Programmatically set banner view to fix to bottom of screen
body: <p>I have programmatically added a bannerView to my app. On iOS7 4" and 3.5" it works perfectly, however on iOS6, it moves the banner down by 20px, obviously because of the Status bar but I want the banner to always fit to the bottom of the screen, not fall 20 pixels off</p>
  
  <p>My code is like this:</p>
  
  <pre><code>   [bannerView_ loadRequest:[GADRequest request]];
  
  
      [bannerView_ setFrame:CGRectMake([UIScreen mainScreen].bounds.size.width-bannerView_.frame.size.width,
                                       [UIScreen mainScreen].bounds.size.height-bannerView_.frame.size.height,
                                       bannerView_.frame.size.width,
                                       bannerView_.frame.size.height
                                       )];
  </code></pre>
  
  <p>Is there a way to programmatically change the deltas or something? Basically the banner needs to move 20px up on iOS6 </p>