How to get a selected item in collection view using indexPathsForSelectedItems
The sender argument in prepareForSegue:sender: will be the cell if you connected the segue from the cell. In that case you can get the indexPath from the cell,
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { if segue.identifier == "showZoomController" { let zoomVC = segue.destinationViewController as PhotoZoomViewController let cell = sender as UICollectionViewCell let indexPath = self.collectionView!.indexPathForCell(cell) let userPost = self.timeLineData.objectAtIndex(indexPath.row) as PFObject zoomVC.post = userPost }}
The indexPathsForSelectedItems returns an array of indexPaths (since there might be several items selected) so you need to use:
let indexPaths : NSArray = self.collectionView!.indexPathsForSelectedItems()let indexPath : NSIndexPath = indexPaths[0] as NSIndexPath(You should probably test to see whether several items are selected, and handle accordingly).
In swift 3:
let index = self.collectionView.indexPathsForSelectedItems?.first