ScrollingDirectionScrollView
This is a drop in category for UIScrollView that enable the user to determine the scrolling direction of a UIScrollView rapidly.
It should be used with UIScrollViewDelegate in this fashion :
Saves the scrollViews content offset before dragging begins.
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
[scrollView setLastContentOffset:scrollView.contentOffset];
}Having saved the scrollViews content offset before dragging begins allows the scrolling direction to be determined in the other delegate methods like this
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
if (scrollView.scrollDirectionX == ScrollDirectionRight) {
//Do something with your views etc
}
if (scrollView.scrollDirectionY == ScrollDirectionUp) {
//Do something with your views etc
}
}Version 1.0.0
MIT License, Copyright © 2013 Jordane Belanger