title: How to pick(picker view) any files from ios device using objective c?
body: <p>I was developing an ios application for file backup. In that I need to list and enable user to pick up files from any folder and need to do email backup like media and image picker.</p>
  
  <p>I am struckup here with a bottle neck. I can't triger populating the list of document and email list for the user to pick. I had tried many codes, but it is not working. </p>
  
  <p>I was working with the simulator.</p>
  
  <p>Could anyone share their insight?</p>
  
  <p>Regards</p>