Created
April 22, 2020 02:23
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| func setupCollectionView() { | |
| self.collectionView.collectionViewLayout = columnLayout | |
| self.collectionView.dataSource = self | |
| self.collectionView.dragDelegate = self | |
| self.collectionView.dragInteractionEnabled = true | |
| } | |
| extension ViewController: UICollectionViewDragDelegate { | |
| func collectionView(_ collectionView: UICollectionView, itemsForBeginning session: UIDragSession, at indexPath: IndexPath) -> [UIDragItem] { | |
| let attributedString = String(indexPath.item) | |
| let dragItem = UIDragItem(itemProvider: NSItemProvider(object: attributedString as NSItemProviderWriting)) | |
| dragItem.localObject = attributedString | |
| return [dragItem] | |
| } | |
| } |
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