title: iPhone: sliding view in and out by pulling an image down from the top
body: <p>I'm trying to get a UIViewController (B) to appear over a current UIViewController / UITableViewController (A) by pulling down an image which will reveal B from the top of the screen. </p>
  
  <p>Just below the navigation bar will be an image which is placed on top of A and the user can pull the image down to a certain position revealing a bit of B and then the image and B will animate down to a certain position on the screen, revealing the B's UIViewController / UITableViewController. I've including 2 drawings below hopefully clearing it up better?</p>
  
  <p><a href="http://www.petermumford.com/screen1.jpg" rel="nofollow noreferrer">First screen: User can pull down the image from the top revealing B as user pulls the image down http://www.petermumford.com/screen1.jpg</a>
  <a href="http://www.petermumford.com/screen2.jpg" rel="nofollow noreferrer">Second screen: B is now revealed by the image sliding down after reaching its certain pull down position http://www.petermumford.com/screen2.jpg</a></p>
  
  <p>Can anyone point me in the right direction if this is possible? Any feedback is greatly appreciated.</p>