如何在iOS中的UIWebView中操作DOM [英] How to manipulate DOM in UIWebView in iOS

问题描述

我在我的应用程序中使用UIWebView.当用户在UIWebView中单击网站中的链接时，我想调用Objective-C函数.有没有办法做到这一点?UIWebView允许更改它吗?

I am using a UIWebView in my app. I want to call a objective-c function when user clicks a link in a website in UIWebView. Is there a way to do this? Does UIWebView allow to change it?

推荐答案

首先将其钩住. [yourwebview setDelegate:self]

使用以下委托方法

webView:shouldStartLoadWithRequest:navigationType

赞:

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
    NSURL *url = request.URL;
    NSString *urlString = url.absoluteString;
    //put your logic here, like 
    if (![url.scheme isEqual:@"yourscheme"]) {// or query contains or [url absolutestring] contains etc
        return NO;
    }
    return YES;
}

如果要操作DOM或调用UIWebView的任何功能，请使用:

If you want to manipulate DOM or call any function of UIWebView, then use:

[yourwebView stringByEvaluatingJavaScriptFromString:@"alert('hello')"];
[yourwebView stringByEvaluatingJavaScriptFromString:@"$('#domid').hide();"];

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