title: Navigating XML from Objective-C
body: <p>I'm getting this XML response from TwitPic:</p>
  
  <pre><code>     &lt;?xml version="1.0" encoding="UTF-8"?&gt;
      &lt;rsp stat="ok"&gt;
          &lt;mediaid&gt;abc123&lt;/mediaid&gt;
          &lt;mediaurl&gt;http://twitpic.com/abc123&lt;/mediaurl&gt;
      &lt;/rsp&gt;
  </code></pre>
  
  <p>I want to access the value within the 'mediaurl' tags.</p>
  
  <p>So I tried:</p>
  
  <pre><code>NSString *twitpicURL = [[request responseHeaders] objectForKey:@"mediaurl"];
  </code></pre>
  
  <p>But that doesn't seem to work.</p>
  
  <p>Can someone point me in the right direction with this please?</p>
  
  <p>Thanks,</p>
  
  <p>Jamie.</p>