How to tell when a TTTableViewController scrolls

I'm using Three20's TTTableViewController and I'd like to know when the user scrolls the table view. With a regular UITableViewController I can just listen in o开发者_JAVA技巧n scrollViewDidScroll:. How can I do this in a TTTableViewController?

Just overrides two methods didBeginDragging and didEndDragging in your TTTableViewController.