Stop UIScrollView scrolling during touch

Question

Is there a way to stop a UIScrollView from scrolling while a touch is still held down? Setting the content offset using the scrollViewDidScroll: delegate method is excessive and can cause some issues (view moves and resets quickly) with the GPU, so I was hoping for a cleaner solution, if there is one.

score 2 · Answer 1 · answered Jan 02 '14 at 12:11

2

You can simply turn it out by using its property scrollEnabled in viewDidLoad..

self.myScrollView.scrollEnabled = NO;

answered Jan 02 '14 at 12:11

A R

461
4
14

Please note: "during touch" – RileyE Jan 02 '14 at 18:44

score 0 · Answer 2 · answered Jul 08 '13 at 18:57

0

I would try:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [scrollView setScrollingEnabled:NO];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    [scrollView setScrollingEnabled:NO];
}

That will turn it off for a press and you can adjust detecting how far the "Move" was from the original touch to see if you want to reenable scrolling or not

answered Jul 08 '13 at 18:57

Chip Snyder

418
3
13

That will only work when the view is touched. I'm asking about while the view currently being touched. – RileyE Jul 08 '13 at 19:05
ah ok I was thinking the touches began still triggered on a long touch my bad. – Chip Snyder Jul 08 '13 at 19:40
It only triggers when the touches being, are moved or are ended. However the `setScrollingEnabled:NO` will also cause the jittery animation when the view moves before disabling. This doesn't have anything to do with long touches. Thank you for the response! – RileyE Jul 08 '13 at 19:45

Stop UIScrollView scrolling during touch

2 Answers2