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paul1893/Behavior of a collectionView during drop update

Last active January 4, 2018 12:19
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Behavior of a collectionView during drop update
func collectionView(_ collectionView: UICollectionView, dropSessionDidUpdate session: UIDropSession, withDestinationIndexPath destinationIndexPath: IndexPath?) -> UICollectionViewDropProposal {
if session.localDragSession != nil {
return UICollectionViewDropProposal(operation: .move, intent: .insertAtDestinationIndexPath)
} else {
return UICollectionViewDropProposal(operation: .copy, intent: .insertAtDestinationIndexPath)
}
}
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