Capturing POST Parameters Inside UIWebView for an iOS App

Question

I am displaying a simple HTML page inside the UIWebView. The page contains the login and password text box. When I click the login button I pass that information (username and password) using post to some URL.

I have breakpoints inside the UIWebView shouldStartLoadWithRequest method but I only see the original login page URL and not the one that it posted. When I use Charles (Network debugging) tool it shows that the POST parameters were passed to the correct URL but that request was never captured inside the shouldStartLoadWithRequest method.

How can I access the parameters inside the UIWebView so I can perform some other action?

Answer 1

In the shouldStartLoadWithRequest delegate method, you can capture the POST body of the request. See code below:

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {

    NSLog(@"BODY: %@",[[[NSString alloc]initWithData:request.HTTPBody encoding:NSUTF8StringEncoding] autorelease]);

}