Get Visible IndexPath UICollectionView in Swift

Question

How to get visible IndexPath while scrolling in collectionView,I referred many link1,link2 But indexPathForCell is not supported in Swift.

Answer 1

Have you tried delegate function?

public func indexPathsForVisibleItems() -> [NSIndexPath]

or

collectionView.indexPathsForVisibleItems()

these must give you what you wanted.

Answer 2

Swift, safer way to get visible Items:

if let indexPaths = self.collectionView.indexPathsForVisibleItems {
    //Do something with an indexPaths array.
}

Answer 3

try this

On delegate

func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
for cell in yourCollectionViewname.visibleCells()  as [UICollectionViewCell]    {
   let indexPath = yourCollectionViewname.indexPathForCell(cell as UICollectionViewCell)

    NSLog("%@", indexPath)
}
}

Choice-2

on Button Click

  var point : CGPoint = sender.convertPoint(CGPointZero, toView:yourCollectionViewname)
var indexPath =yourCollectionViewname!.indexPathForItemAtPoint(point)

Get visible All Items

you can use indexPathsForVisibleRows

Returns an array of index paths each identifying a visible row in the receiver.

• (NSArray *)indexPathsForVisibleItems;

var visible: [AnyObject] = yourCollectionViewname.indexPathsForVisibleItems
var indexpath: NSIndexPath = (visible[0] as! NSIndexPath)

Answer 4

This will work fine.

func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {

    let visibleIndex = Int(targetContentOffset.pointee.x / collectionView.frame.width)
    print(visibleIndex)

}