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当 UIWebView 中的 UIScrollView 滚动时,我正在尝试执行操作。我想连接 scrollViewDidScroll 方法来执行此操作,但这并未在 UIWebViewDelegate 中公开。我觉得我应该能够让我的控制器也实现 UIScrollViewDelegate,但这似乎搞砸了 UIWebView,因为这应该是 UIScrollView 的委托。