使用UIEdgeInsets滚动时的Tableview部分

Question

在我的应用程序中，我在表视图上使用了视差效果。因此，我使用UIEdgeInsets来显示效果。这是不带节的完美工作，但是当我尝试使用节时，它看起来很丑，并且在上下滚动时，节变得僵硬。我附上了夹子，以留出更多空间。而且我使用波纹管代码。 link请帮助我

override func viewDidLoad()
    {
        super.viewDidLoad()

        tblItemList.contentInset = UIEdgeInsets(top: 200, left: 0, bottom: 0, right: 0)

        imageView.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: 200)
        imageView.image = UIImage.init(named: "32621859132_25f783b550_o.jpg")
        imageView.contentMode = .scaleAspectFill
        imageView.clipsToBounds = true
        //imageView.backgroundColor = .white
        view.addSubview(imageView)
    }

extension RestaurantDetailsVC : UITableViewDataSource, UITableViewDelegate
{
    func numberOfSections(in tableView: UITableView) -> Int {
        return 3
    }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 5
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
    {
        let cell = tableView.dequeueReusableCell(withIdentifier: "ItemCell", for: indexPath) as! ItemCell

        return cell
    }
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 105
    }
    func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView?
    {
        let cell = tableView.dequeueReusableCell(withIdentifier: "ItemSectionCell") as! ItemSectionCell
        cell.backgroundColor = .white
        return cell
    }
    func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
        return 44
    }


    //Scrollview delegate
    func scrollViewDidScroll(_ scrollView: UIScrollView)
    {
        let y = 200 - (scrollView.contentOffset.y + 200)
        let height = min(max(y, 0), 300)
        imageView.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: height)

        if height <= 0
        {
            UIView.animate(withDuration: Double(0.1), animations: {
                self.constraintTopForViewBar.constant = 0
                self.viewForTopBar.isHidden = false
                self.view.layoutIfNeeded()
                }) { (result) in}

            self.tblItemList.contentInset = UIEdgeInsets(top: 68, left: 0, bottom: 0, right: 0)
        }
        else
        {
            UIView.animate(withDuration: Double(0.1), animations: {
                self.constraintTopForViewBar.constant = -68
                self.viewForTopBar.isHidden = true

                self.view.layoutIfNeeded()
            }) { (result) in}

            self.tblItemList.contentInset = UIEdgeInsets(top: 200, left: 0, bottom: 0, right: 0)
        }

        //print(height)
    }
}