Override shouldStartLoadWithRequest

gistfile1.m

/**
 * Overriding in __App__Delegate.m
 * if this is viable, find a nicer API and merge into PhoneGap/Callback/Cordova edge
 *
 * programmatic iframe creations open in main webview
 * user interactions open in Safari
 */
- (BOOL)webView:(UIWebView *)theWebView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    BOOL superValue = [ super webView:theWebView shouldStartLoadWithRequest:request navigationType:navigationType ];
    BOOL inIframe = ![self doesRequest:request comeFromWebView:theWebView];
    BOOL fromUserInteraction = (navigationType == UIWebViewNavigationTypeLinkClicked || navigationType == UIWebViewNavigationTypeFormSubmitted);
    
    NSURL *url = [request URL];
    
    NSLog(@"url is %@", url);
    NSLog(@"inIframe is %@", (inIframe ? @"true" : @"false"));
    NSLog(@"request.mainDocumentURL = %@", [request.mainDocumentURL absoluteString]);
    NSLog(@"webview.request.mainDocumentURL = %@", [theWebView.request.mainDocumentURL absoluteString]);
    
    // if in iframe and has user interaction
    if (inIframe && fromUserInteraction) {
        [[UIApplication sharedApplication] openURL:url];
        return NO;
    }
    
    // otherwise, fall back to super
    return superValue;
}

- (BOOL)doesRequest:(NSURLRequest *)request comeFromWebView:(UIWebView *)webView
{
    // sees if the mainDocumentURL of the request matches that of the webView
    // if not, is probably from an iFrame
    return ([[request.mainDocumentURL absoluteString] 
            compare:[webView.request.mainDocumentURL absoluteString]]
            == 0);
}