How to detect page change in UIWebView and do something before it starts loading?

Question

I need to do something on each page change, before that page starts loading/executing.

First, I tried using -webView:shouldStartLoadWithRequest: but that won't work, because it's also called for XHR requests and iframe requests.

Second, I tried using -webViewDidStartLoad: and comparing webView.request to it's previous value, to see if it changed. This doesn't work, because webView.request is updated only some time after the call.

Any more ideas?

Answer 1

Make a Category or extend UIWebview that overrides loadRequest, doing your operation first and then doing the standard loadRequest.