How do I get the last HTTP Status Code from a UIWebView?

Question

I would like to detect when a page load request give to a UIWebView has returned a status code in the 5xx or 4xx range.

I\'ve setup the delegate for the web view a

Answer 1

As I just posted on another thread, it is also possible to intercept any NSURLRequest at the level of the NSURLProtocol and create your NSURLResponse there, instead of in your UIWebView delegate/controller. The reason why this is preferable in my opinion is that it maintains the back/forward navigation stack of the UIWebView. The outline of the approach can be found in this excellent blog post by Rob Napier:

http://robnapier.net/blog/offline-uiwebview-nsurlprotocol-588

and there's code on GitHub:

https://github.com/rnapier/RNCachingURLProtocol