How to refresh a UIWebView by a “pull down and release” gesture?

Question

I know that this is possible in the Tweetie for iPhone or the xkcd iPhone app, but they are using a table. Any idea if this can be done for a simple UIWebView a

Answer 1

To get a reference for the UIScrollView in UIWebView, simply search it by iterating trough subviews.

for(id eachSubview in [webView subviews]){
        if ([eachSubview isKindOfClass:[UIScrollView class]]){
            scrollView = eachSubview;
            break;
        }
}

After that you can easily wire up things to your EGORefreshTableHeaderView interface with the UIWebView and the UIScrollView delegate callbacks.