How to get cell atIndex in UICollectionView with swift? How to get cell atIndex in UICollectionView with swift? ios ios

How to get cell atIndex in UICollectionView with swift?

This is the way to get the cell at a given indexPath:

let cell = collectionView!.cellForItemAtIndexPath(indexPath)

However, you also might want to try:

cell.contentView.backgroundColor = UIColor.blueColor()


Though the above may have worked, I want to encourage you to try a different implementation to achieve the same functionality. Your implementation would require you to have a separate Action# function for each CollectionViewCell, as well as create the indexPath manually in each of those methods, when you could potentially only have one!

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("CollectionViewCell", forIndexPath: indexPath) as! CollectionViewCell    cell.backgroundColor = UIColor.blackColor()    cell.buttonView.addTarget(self, action: Selector("action"), forControlEvents: UIControlEvents.TouchUpInside)    return cell}

and the function for that one method would be something like:

func action(sender: UIButton!) {    var point : CGPoint = sender.convertPoint(CGPointZero, toView:collectionView)    var indexPath = collectionView!.indexPathForItemAtPoint(point)    let cell = collectionView!.cellForItemAtIndexPath(indexPath)    cell.backgroundColor = UIColor.blueColor()}

Updated action function for Swift 4.2

@objc func action(sender: Any){    print("tickedOffPressed !")    if let button = sender as? UIButton {        let point: CGPoint = button.convert(.zero, to: collectionView)        if let indexPath = collectionView!.indexPathForItem(at: point) {            let cell = collectionView!.cellForItem(at: indexPath)            cell?.backgroundColor =        }    }}

Just a suggestion! Happy coding! :)

In Swift 4 you can get the cell of CollectionView with:

let indexPath = IndexPath(item: 3, section: 0);  if let cell = myCollectionView .cellForItem(at: indexPath)  {      // do stuff...  }  

try cell.selected and then change the color