iOS how to stop a scrolling scrollView

- (void)killScroll
{
    CGPoint offset = scrollView.contentOffset;
    offset.y -= 1.0;
    [scrollView setContentOffset:offset animated:NO];
}

参考文章：http://*.com/questions/3410777/how-can-i-programmatically-force-stop-scrolling-in-a-uiscrollview