您不需要继承 UITableView 来跟踪滚动。您的 UITableViewDelegate 可以作为 UIScrollViewDelegate 。因此，在委托类中，您可以实现 -scrollViewWillBeginDragging：或任何 UIScrollViewDelegate 方法在你的情况下。 （正如你提到的问题中的实际建议）

You don't need to subclass UITableView to track scrolling. Your UITableViewDelegate can serve as UIScrollViewDelegate as well. So in your delegate class you can implement -scrollViewWillBeginDragging: or whatever UIScrollViewDelegate method you need in your situation. (as actually suggested in the question you mention)