iphone: View on top of UIWebView?

Question

I\'m working on a browser app, and I have an address bar on top the UIWebView. On MobileSafari if you scroll down, the address bar starts to move to the top, out of the screen,

Answer 1

PeakJi's solution works but is a bit laggy. A better solution would be adding an observer to the UIScrollView's content offset, something like

[scrollview addObserver:self forKeyPath:@"contentOffset" 
                                    options:NSKeyValueObservingOptionNew context:nil];

You can find more document on NSKeyValueObserving protocol at

https://developer.apple.com/library/ios/#documentation/Cocoa/Reference/Foundation/Protocols/NSKeyValueObserving_Protocol/Reference/Reference.html