title: How to force UIWebView to load before transition
body: <p>iOS 6.1</p>
  
  <p>When a button is tapped, I want to perform a transition from an imageview to a webview.
  The problem is that the very first time the webview loads, the page is white and the html page loads <strong>after</strong> the transition:</p>
  
  <pre><code>NepContainerView *containerInFrame = (NepContainerView *)[self view];
  
  UIWebView *webView = [[UIWebView alloc] initWithFrame:self.view.frame];
  
  [webView loadHTMLString:html baseURL:nil];
  
  [UIView transitionWithView:containerInFrame
                        duration:DURATION_TRANS_PHOTO_DESC
                         options:UIViewAnimationOptionTransitionFlipFromLeft
                      animations:^{
                          [containerInFrame addSubview:webView];
                          [sender setTitle:@" Photo "];
                      }
                      completion:NULL];
  </code></pre>
  
  <p>How can I force the html page to be loaded <strong>before</strong> the transition?</p>