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Editorial Team
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Asked: 2026-05-26T06:27:13+00:00

I’m trying to extract some XML from a UIWebView , and not having much

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I’m trying to extract some XML from a UIWebView, and not having much luck. This is what the entire document looks like:

<?xml version="1.0" encoding="utf-8"?>
<authResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <firstName>Name here</firstName>
  <lastName>Name here</lastName>
  <membershipTier>Membership level</membershipTier>
  <errorMessage />
  <isValid>1</isValid>
</authResponse>

I have tried a number of variations of the stringByEvaluatingJavaScriptFromString method, but this is the only one that will return anything for me:

[webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.textContent"]

However, I need the raw XML, not the text content. Any suggestions?

EDIT: I have control over the XML, so it can be modified if need be.\

EDIT 2: As requested, code I am using to load the request is below. Note that this request is for a login screen. Once the user has entered their credentials, the page after that is the one I am trying to extract the results from. I determine which is the current page in webViewDidFinishLoad by testing the current mainDocumentURL for the UIWebView object.

    NSString* urlString = kLoginURL;
    NSURL* url = [NSURL URLWithString:urlString];
    NSURLRequest* request = [NSURLRequest requestWithURL:url];

    UIWebView* tmpWebView = [[UIWebView alloc] init];
    self.webView = tmpWebView;
    [tmpWebView release];
    self.webView.delegate = self;
    [self.webView loadRequest:request];
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1 Answer

  1. Editorial Team

    Just wrote a little test program to figure this out (fun!). It loads the UIWebView contents via: 

     NSString * data = @"<?xml version=\"1.0\" encoding=\"utf-8\"?><authResponse xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"><firstName>Name here</firstName><lastName>Name here</lastName><membershipTier>Membership level</membershipTier><errorMessage /><isValid>1</isValid></authResponse>";
[self.webview loadHTMLString: data baseURL: nil];

    I then passed the string document.getElementsByTagName('body')[0].innerHTML to stringByEvaluatingJavaScriptFromString

    and it returns what you want:

    <authresponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><firstname>Name here</firstname><lastname>Name here</lastname><membershiptier>Membership level</membershiptier><errormessage><isvalid>1</isvalid></errormessage></authresponse>
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