UIScrollView scrolling in only one direction at a time

Question

I have a UIScrollView and I want it to be able to scroll in both directions (it currently does) but only one at a time. So, for instance, if you start scrolling it horizonta

Answer 1

the simple way to achieve this is set the directionalLockEnabled to YES and implement the UIScrollerView delegate like this

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    if (scrollView.contentOffset.x != 0 &&
        scrollView.contentOffset.y != 0) {
        scrollView.contentOffset = CGPointMake(0, 0);
    }
}