title: Changing resources programmatically in Objective-C iOS 5 for Retina Display
body: <p>My app have a background image that fills the screen. I'd like to display the correct .png file depending on if we're on a Retina Display device or not. I already have added all the .png files for both iPhone and iOS with the correct sizes. Is it possible ? If not, how should I handle it properly ?</p>
  
  <p>I have XCode 4.3.2 with iOS 5.1 as the deployment target.</p>