In iOS 7 there is a keyboardDismissMode property on UIScrollView.
So just set it to “UIScrollViewKeyboardDismissModeInteractive” and you’ll get this behavior. Works in UIScrollView subclasses such as UITableView.
self.tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
Swift 3:
tableView.keyboardDismissMode = .interactive
Or change it in storyboard (if using it) in attributes inspector for your UIScrollView subclass.