使用弹簧动画设置scrollRangeToVisible动画

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var scrollView: UIScrollView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置 scroll view 的内容大小
        scrollView.contentSize = CGSize(width: view.frame.width, height: 2000)
        
        // 模拟用户点击某个项目，滚动到该项目的位置
        let targetRect = CGRect(x: 0, y: 1000, width: view.frame.width, height: 100)
        scrollWithSpring(to: targetRect)
    }
    
    func scrollWithSpring(to targetRect: CGRect) {
        UIView.animate(withDuration: 0.3, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.5, options: .curveEaseInOut, animations: {
            self.scrollView.scrollRectToVisible(targetRect, animated: false)
        }, completion: nil)
    }
}