title: Clear UIWebView content upon dismissal of modal view (iPhone OS 3.0)
body: <p>I currently have a UIWebView that is displayed within a modal view.  It is basically a detail view that provides a view of a page when the user clicks a link.  When the view is dismissed and then brought up again (when the user clicks another link), the previously-loaded content is still visible and the new content loads "on top" of the last content.  This makes sense because the instance of the UIWebView persists between sessions and is only released when the memory is needed.</p>
  
  <p>However, I would like to completely clear the UIWebView when the modal view is dismissed so that 1) content is cleared and 2) memory is freed.  Thus far my research and attempts have not found an answer.  These links haven't worked for me:</p>
  
  <ol>
  <li><a href="https://stackoverflow.com/questions/2184688/is-it-possible-to-free-memory-of-uiwebview">is it possible to free memory of UIWebView?</a></li>
  <li><a href="https://stackoverflow.com/questions/2311564/reused-uiwebview-showing-previous-loaded-content-for-a-brief-second-on-iphone">Reused UIWebView showing previous loaded content for a brief second on iPhone</a></li>
  </ol>
  
  <p>I've tried <code>[[NSURLCache sharedURLCache] removeAllCachedResponses];</code> and setting the webView to nil and manually releasing the webView upon modal-view-dismiss to no avail.  Any thoughts from the wizened masses?</p>