更改UICollectionView单元格X位置-swift

如何以编程方式更改每个单元格的X位置?我可以根据自己的意愿更改单元格的宽度和高度,但由于XY位置的原因,无法完成项目。

• 我的成绩 ,

  

• 预期结果是,,

我的全视图控制器代码是,

import UIKit

class ReviewVC: UIViewController , UICollectionViewDataSource , UICollectionViewDelegate , UICollectionViewDelegateFlowLayout{


    var cellWidthArr : [CGFloat] = [60.0 , 170.0 , 110.0 , 120.0]


    var titleArr = ["  Polite  " , "  Showed up on time  ", "  Quick responses  " , "  Fair prices  "]

    override func viewDidLoad() {
        super.viewDidLoad()


        self.navigationItem.title = "Review your experiance"

        let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
        layout.sectionInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
        layout.minimumInteritemSpacing = 0
        layout.minimumLineSpacing = 0
        collectionView!.collectionViewLayout = layout

    }


    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 4
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ReviewCollectionCell", for: indexPath)as? ReviewCollectionCell

        cell?.titleLabel.text = self.titleArr[indexPath.row]

        cell?.titleLabel.layer.cornerRadius = (cell?.titleLabel.bounds.size.height)!/2
        cell?.titleLabel.clipsToBounds = true

        cell?.titleLabel.layer.borderColor = (UIColor.init(red: 240/255, green: 36/255, blue: 70/255, alpha: 1.0)).cgColor
        cell?.titleLabel.layer.borderWidth = 1.0

        return cell!
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
    {
        return CGSize(width: self.cellWidthArr[indexPath.row], height: 30)
    }
}