How can I highlight selected UICollectionView cells? (Swift)

Question

I have a UICollectionView, and the user is able to select multiple cells. It's a bit difficult to keep track of which cells have been selected, so I need some way to go about highlighting/creating a border when the cell is tapped.

Code:

func collectionView(collectionView: UICollectionView, shouldSelectItemAtIndexPath indexPath: NSIndexPath) -> Bool {      addToList.append(objectsArray[indexPath.row])      return true  } 

Answer 1

you can use border change on didSelectItemAtIndexPath override event like the below code and assign new settings on the cell.

Swift 3.x:

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {     addToList.append(objectsArray[indexPath.row])     let cell = collectionView.cellForItem(at: indexPath)     cell?.layer.borderWidth = 2.0     cell?.layer.borderColor = UIColor.gray.cgColor }