我正在尝试实现此功能:在我的应用程序中,如果我在 UICollectionView 中选择了一个单元格,则边框变为蓝色,如果我选择另一个单元格,则应取消选择之前的单元格,边框应变为透明。我写了一些方法:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! ChatCell
/* Set some settings */
if globalSelected[indexPath.item] {
cell.circleView.layer.borderColor = UIColor.blue.cgColor
} else {
cell.circleView.layer.borderColor = UIColor.clear.cgColor
}
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
//Global variable for maintain selection
global.selectedChatPath = indexPath
globalSelected[indexPath.item] = true
collectionView.reloadData()
}
func collectionView(_ collectionView: UICollectionView, didDeselectItemAt indexPath: IndexPath) {
if indexPath != nilPath {
globalSelected[indexPath.item] = false …Run Code Online (Sandbox Code Playgroud)