Presenting ViewController from UIWebView delegate

Question

I have a UIWebView with a delegate id<UIWebViewDelegate>. When I click on links in the UIWebView, I get the NSURLRequest object in the callback:

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

What I'm trying to do is:

- (void)presentWebViewControllerWithUrl:(NSURL*)URL{
      SVModalWebViewController *webViewController = [[SVModalWebViewController alloc] initWithURL:URL];
      webViewController.modalPresentationStyle = UIModalPresentationPageSheet;
      webViewController.availableActions = SVWebViewControllerAvailableActionsOpenInSafari | SVWebViewControllerAvailableActionsCopyLink | SVWebViewControllerAvailableActionsMailLink;
      [self presentModalViewController:webViewController animated:YES];
}

When I place this code in my main view controller, the modal web view appears, but it doesn't if I place it in my delegate. How do I make it appear?

---

update:

Returning NO from the shouldStartLoadWithRequest simply makes my UIWebViews turn white, with no content. It seems that the callback is being called when the webviews load. I am loading locally stored HTML into them with [web loadHTMLString:@"..." baseUrl: nil] The modal never appears.

My view hierarchy is as follows:

1. MainView
   • UIView
     • UIScrollView
       • UIWebView
       • UIWebView
       • ...

Is there a way to "bubble" up the callbacks so that I can see the event in my main view controller?

Answer 1

make sure to return (NO) when overriding your shouldStartLoadWithRequest delegate method.

Also, I don't see the [viewController presentModalViewController:webViewController animated:YES] in your code, something like this:

 - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType 
    {
     if (navigationType != UIWebViewNavigationTypeLinkClicked)
      return (YES);

     SVModalWebViewController *webViewController = [[SVModalWebViewController alloc] initWithURL:[request URL]]; 
     webViewController.modalPresentationStyle = UIModalPresentationPageSheet;  
     webViewController.availableActions = SVWebViewControllerAvailableActionsOpenInSafari | SVWebViewControllerAvailableActionsCopyLink | SVWebViewControllerAvailableActionsMailLink; 
     [myViewController presentModalViewController:webViewController animated:YES];
     return(NO);
    }