快速滚动时跳过的UIScrollView委托函数

class ViewController: UIViewController, UIScrollViewDelegate {
    @IBOutlet weak var scrollView: UIScrollView!
    
    var scrollStartTime: TimeInterval = 0
    var scrollStartPosition: CGPoint = .zero
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        scrollView.delegate = self
    }
    
    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
        scrollStartTime = Date().timeIntervalSince1970
        scrollStartPosition = scrollView.contentOffset
    }
    
    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
        let scrollEndTime = Date().timeIntervalSince1970
        let scrollEndPosition = scrollView.contentOffset
        
        let scrollDuration = scrollEndTime - scrollStartTime
        let scrollDistance = sqrt(pow(scrollEndPosition.x - scrollStartPosition.x, 2) + pow(scrollEndPosition.y - scrollStartPosition.y, 2))
        let scrollSpeed = scrollDistance / CGFloat(scrollDuration)
        
        let maxScrollSpeed: CGFloat = 1000 // 设置最大滚动速度
        
        if scrollSpeed > maxScrollSpeed {
            let targetOffset = CGPoint(x: scrollEndPosition.x + (scrollEndPosition.x - scrollStartPosition.x), y: scrollEndPosition.y + (scrollEndPosition.y - scrollStartPosition.y))
            scrollView.setContentOffset(targetOffset, animated: false)
        }
    }
}