title: Design a mobile app for multiscreen resolutions
body: <p>I'm really new with flex. I want to develop an app for multiscreen resolutions. I can't figure out exactly what i  need to do.</p>
  
  <p>I read this article <a href="http://renaun.com/blog/2011/10/customizing-flex-applicationdpi-for-a-multiple-screen-size-application/" rel="nofollow">here</a> but it still it's not that clear what i have to do.</p>
  
  <p>Can anyone explain how can i keep the same size and design across multiple resolutions? </p>
  
  <p>How can i achieve Density independence ? </p>
  
  <p>Do i need to have 3 different resolutions for a background picture for example? </p>
  
  <p>What screen resolutions does my background image needs to be ?</p>
  
  <p>Thank you!</p>