title: manage images issue Swift
body: <p>I have a problem to understand how do I manage the various image resolution in iOS with Swift.</p>
  
  <p>For example if I have an image that i use it in my app , I have to create to for various devices resolution , but after that I insert in my project the various image resolution where I have to insert it, in a special folder?.</p>
  
  <p>Can you help me?</p>