title: How to determine if a string is a URL in Objective-C
body: <p>I'm new to iPhone development and Objective-C. Using the ZBar SDK I've developed a basic app which scans a QR image from the photo album and outputs what it translates to.</p>
  
  <p>I want to know if there is a way to take this output, determine whether it is a URL and if so open it in a web browser.</p>