表格视图单元格在滚动Swift时更改颜色

import UIKit

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
    @IBOutlet weak var tableView: UITableView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.dataSource = self
        tableView.delegate = self
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 100
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        cell.textLabel?.text = "Row \(indexPath.row)"
        cell.backgroundColor = UIColor.white // 设置初始颜色
        return cell
    }
    
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        for cell in tableView.visibleCells {
            let indexPath = tableView.indexPath(for: cell)!
            let cellColor = calculateCellColor(indexPath: indexPath, contentOffset: scrollView.contentOffset)
            cell.backgroundColor = cellColor
        }
    }
    
    func calculateCellColor(indexPath: IndexPath, contentOffset: CGPoint) -> UIColor {
        // 根据滚动位置或其他条件计算单元格的颜色
        // 这里只是一个示例，可以根据实际需求进行修改
        let red = CGFloat(indexPath.row) / CGFloat(100)
        let green = contentOffset.y / scrollView.contentSize.height
        let blue = 1.0 - red
        
        return UIColor(red: red, green: green, blue: blue, alpha: 1.0)
    }
}