如何在集合视图中实现单元格的单选交换 swift

Question

我有一个集合视图，当我 select 一个单元格时，它应该将单元格的颜色更改为黄色，当我 select 下一个单元格时，它应该将其颜色更改为黄色，但它应该将以前的单元格颜色改回清晰，我只想在一次 1 选定的单元格所有其他剩余的单元格应保持清晰的颜色，只有选定的单元格应为黄色有人可以帮我吗

var selectedFirstIndexPath = [IndexPath]()
var selectedSecondIndexPath : IndexPath?
var selection  = false


func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
 
    guard let cell = detailedCollectionView.dequeueReusableCell(withReuseIdentifier: "cellZain", for: indexPath) as? BillingDetailVCollectionCell else {
        return UICollectionViewCell()
    }
    cell.titleLabel.text = colltnTitleName?[indexPath.row].name
    if self.selectedFirstIndexPath != [] && [indexPath] == self.selectedFirstIndexPath {
        cell.viewBG.backgroundColor = UIColor.yellow
        cell.titleLabel.textColor = UIColor.black
        selection = true
    }else {
    cell.viewBG.backgroundColor = UIColor.clear
    cell.titleLabel.textColor = UIColor.white
        selection = false
    }
    return cell
    
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {


        let cell = detailedCollectionView.cellForItem(at: indexPath)  as? BillingDetailVCollectionCell
        self.selectedSecondIndexPath = indexPath
        detailedCollectionView.allowsMultipleSelection = false
        cell?.viewBG.backgroundColor = UIColor.yellow
        cell?.titleLabel.textColor = UIColor.black

        self.selection = true
        
        if self.selectedFirstIndexPath != [] {
            detailedCollectionView.delegate?.collectionView?(detailedCollectionView, didDeselectItemAt: indexPath)
            self.selectedFirstIndexPath = []
            self.selection = false
            cell?.viewBG.backgroundColor = UIColor.clear
            cell?.titleLabel.textColor = UIColor.white
            DispatchQueue.main.async {
                self.detailedCollectionView.reloadItems(at:self.selectedFirstIndexPath)
            }
        }

}