Áp sự kiện click cho 1 cell in IOS

 cell.didSelectNews = { (md:ModelNews) -> () in

                        (self.delegate?.CateViewController_Selected(modelSelected: [md]))!

                    }

// trong class cell 

open var didSelectNews: ((_ md: ModelNews ) -> ())?

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

        

        if let mdGet = arrPost?[indexPath.item]  {

            let mdPost = mdGet as! ModelNews

            didSelectNews!(mdPost)

        }

}