Created
April 22, 2020 03:51
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| func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { | |
| let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "DragDrogCollectionViewCell", for: indexPath) as! DragDrogCollectionViewCell | |
| let index = indexPath.section * ViewController.columnCount + indexPath.row | |
| cell.backgroundColor = UIColor.clear | |
| cell.label.text = "" | |
| if (index < cellDataList.count) { | |
| cell.backgroundColor = UIColor.yellow | |
| cell.label.text = String(cellDataList[index]) | |
| } | |
| return cell | |
| } | |
| func collectionView(_ collectionView: UICollectionView, itemsForBeginning session: UIDragSession, at indexPath: IndexPath) -> [UIDragItem] { | |
| let dataIndex = getCollectionViewColumnMaxCount() * indexPath.section + indexPath.row | |
| guard (dataIndex < self.cellDataList.count) else { | |
| return [] | |
| } | |
| let attributedString = String(indexPath.item) | |
| let dragItem = UIDragItem(itemProvider: NSItemProvider(object: attributedString as NSItemProviderWriting)) | |
| dragItem.localObject = attributedString | |
| return [dragItem] | |
| } |
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