检查UIWebView是否滚动到底部 [英] check if UIWebView scrolls to the bottom

问题描述

当滚动时用户位于UIWebView的底部时，如何检查/调用方法？当用户位于内容的底部时，我想弹出一个视图（添加一个子视图）。

How do I check/call a method when a user is at the bottom of the UIWebView when scrolling? I want to popup a view (add a subiview) when the user is at the bottom of the content.

推荐答案

建立在其他想法， UIWebView 符合 UIScrollViewDelegate 协议。您可以继承 UIWebView 并覆盖相应的 UIScrollViewDelegate 方法，调用 [super ...] 所以原始行为仍然存在。

Building on other ideas here, UIWebView conforms to the UIScrollViewDelegate protocol. You could subclass UIWebView and override the appropriate UIScrollViewDelegate methods, calling [super ...] so the original behavior is still present.

@interface SpecialWebview : UIWebView

@end

@implementation SpecialWebview

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    [super scrollViewDidScroll:scrollView];

    // Check scroll position and handle events as needed...
}

@end

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