title: How to stop loading the view on tabbar item selection?
body: <p>I have a tabbar controller with three tabs . In first tab I have a navigation controller . Now User navigates in the first tab to do some payment so I have disabled the default back buttons cause I dont want user to use back button in between transaction. But when user presses the tab again he/she navigates to the root view . How can I detect the tabbar selection or how do I avoid loading the tab again ?</p>
  
  <p>Please help me on this !! Thank You !!</p>
  
  <p>Note: I am not sure if my question has been already answered on stackoverflow in some other post but I did search and did not get any answer . If so , please feel free to redirect me to that answer and delete this post . Thanx !</p>