如何在collectionView上使用UIView，这样当我滚动单元格时，UIView不应该移动？

class CustomCollectionViewCell: UICollectionViewCell {
    var fixedView: UIView!

    override init(frame: CGRect) {
        super.init(frame: frame)
        setupFixedView()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setupFixedView()
    }

    private func setupFixedView() {
        fixedView = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
        fixedView.backgroundColor = UIColor.red
        addSubview(fixedView)

        // 添加约束，确保UIView固定在单元格上
        fixedView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            fixedView.topAnchor.constraint(equalTo: topAnchor),
            fixedView.leadingAnchor.constraint(equalTo: leadingAnchor),
            fixedView.widthAnchor.constraint(equalToConstant: 100),
            fixedView.heightAnchor.constraint(equalToConstant: 100)
        ])
    }

    override func prepareForReuse() {
        super.prepareForReuse()
        // 重置UIView的位置
        fixedView.frame = CGRect(x: 0, y: 0, width: 100, height: 100)
    }
}

class ViewController: UIViewController, UICollectionViewDelegateFlowLayout, UICollectionViewDataSource {
    var collectionView: UICollectionView!

    override func viewDidLoad() {
        super.viewDidLoad()

        let layout = UICollectionViewFlowLayout()
        collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.register(CustomCollectionViewCell.self, forCellWithReuseIdentifier: "CustomCell")
        view.addSubview(collectionView)
    }

    // 实现UICollectionViewDelegateFlowLayout的代理方法，设置单元格的大小和布局
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: view.bounds.width, height: 200)
    }

    // 实现UICollectionViewDataSource的代理方法，为每个单元格配置自定义的UICollectionViewCell子类
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CustomCell", for: indexPath) as! CustomCollectionViewCell
        // 配置单元格的其他内容
        return cell
    }

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 10
    }
}