How to integrate safari into iphone app?

Here is a screenshot from app named Downloads lite, it seems like intergrate safari into it's interface, I guess it 开发者_Python百科just simulate the UI from safari.

I'm trying to use UIWebView to display web page, but I don't know how to implement the bule progress bar background and address bar drap disabled when loading

SVWebViewController is pretty much what you are looking for. Hope it helps...