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        检测我何时在页面顶部滚动 UIWebView

        Detect when I scroll my UIWebView at top of the page(检测我何时在页面顶部滚动 UIWebView)
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                • 本文介绍了检测我何时在页面顶部滚动 UIWebView的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  我想在我的 webview 顶部添加一个 URL/google 栏,并像 Safari 一样通过向上滚动我的网页来访问它.为此,我会检测用户何时滚动页面,以及何时滚动到达顶部.

                  I would like to add an URL/google bar on top of my webview, and access it by scrolling up my web page exactly as Safari do. To do this, I would detect when the user is scrolling the page, and more over when the scroll reaches the top.

                  但我真的不知道怎么做.

                  But I really don't know how.

                  一个想法?非常感谢.

                  马丁

                  推荐答案

                  我也在挖掘同样的问题并找到了解决方案.我编写了以下方法来检测滚动坐标.见下文:

                  I was also digging for the same and found a solution. I coded the following method to detect the scrolling coordinates. See below:

                  -(void)userDidScrollWebView:(id)scrollPoint{
                      // NSLog(@"scrolled:::");
                  
                      NSString *x1 = [webView stringByEvaluatingJavaScriptFromString: @"scrollX"];
                  
                  
                      NSString *y1 = [webView stringByEvaluatingJavaScriptFromString: @"scrollY"];
                  
                  
                      NSLog(@"scroll x=%@ y=%@", x1,y1);      
                  
                      if ([y1 isEqualToString: @"0"]) {
                          NSLog(@"RELAOD ME");
                      }   
                  }
                  

                  希望对您有所帮助.

                  这篇关于检测我何时在页面顶部滚动 UIWebView的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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