Handling "myscheme" in Objective C

myschemehandler.m

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
  NSString *scheme = [[[request URL] scheme] lowercaseString];

  if([scheme isEqualToString:@"myscheme"]) {
    // Pull the encoded JSON string out of the querystring
    // Decode the string, convert JSON string into usable object
    // Handle the message
    // Return NO to prevent the webview from navigating
    return NO;
  }

  // Allow normal webview navigation
  return YES;
}