title: Wrong IndexPath of my UICollectionView
body: <p>I have a problem on my UICollectionView.</p>
  
  <p>I create my collectionView with 2 lists. 
  The 2 lists contain a header for each ones.
  For example when I click on the first cell on my first list, my code send me <strong>indexPath.item = 0</strong>. All is normal.
  But when I click on the first index on my second list, my index also returns 0 ,but I prefer it following of the first list.</p>
  
  <p>For example if I have 10 items in my first list <strong>(indexPath 0 -> 9)</strong> I would like the first object of my 2nd list is equal <strong>to 10</strong> and not start from beginning ! Thank you in advance.</p>
  
  <pre><code>override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
      if let cell = sender as? UICollectionViewCell,
        indexPath = collectionView?.indexPathForCell(cell),
        managePageViewController = segue.destinationViewController as? ManagePageViewController {
        managePageViewController.videoList = dataSource.pictureOfVideo
        managePageViewController.currentIndex = indexPath.item
      }
  }
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/8AEol.jpg" rel="nofollow"><img src="https://i.stack.imgur.com/8AEol.jpg" alt="enter image description here"></a></p>