Customizing the search bar textfield in iPhone

http://caydenliew.com/2012/01/customize-uisearchbar-background-image/
for (UIView *subview in [searchBar subviews]) {
        if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
        {
            [d

        if ([subview isKindOfClass:NSClassFromString(@"UISearchBarTextField")]) {
            [(UITextField *)subview setBackground:[UIImage imageNamed:@"searchboxbg.png"]];
        }
    }