title: inside API scrollViewDidScroll , shows sender correct but sender.contentSize is showing null while calculating page number
body: <p>I want to find page number in scroll view consisting of uiimage view.</p>
  
  <p>Inside the method, <code>- (void)scrollViewDidScroll:(UIScrollView *)sender</code> </p>
  
  <p>on logging it shows sender value properly  i.e everything about scroller correct,</p>
  
  <p>but for calculation when i use <code>sender.contentOffSet.x</code> then it shows null</p>
  
  <p>Thanks.</p>