ios 8 - buttons in horizontal scroll view intercepting pan event - scroll does not work

Question

I have a horizontal scroll view with a line of buttons. The scroll view will not scroll unless I do an extremely fast swipe.

If I set the buttons to userInteractionE

Answer 1

I've had this problem with a UITableView which has custom UITableViewCells with UIButtons on it. I put this in my UITableview class.

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
    return YES;
}

Solved my problem.

EDIT: Just to clearify, you can create a subclass of UIScrollview and add this to solve the problem.

Answer 2

I have same issue and I solved it by creating a subclass of UIScrollView and set it's cancelContentTouches value to TRUE and its working fine.

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
       return YES;
}

Hope it will work for you.

Answer 3

I found that in iOS 8, the UIScrollView's underlying UIPanGestureRecognizer is not respecting the UIScrollView's delaysContentTouches property. I consider this an iOS 8 bug. Here's my workaround:

theScrollView.panGestureRecognizer.delaysTouchesBegan = theScrollView.delaysContentTouches

Answer 4

This hack works for me:

UITapGestureRecognizer *nothingTap = [[UITapGestureRecognizer alloc] init];
nothingTap.delaysTouchesBegan = YES;
[_scrollView addGestureRecognizer:nothingTap];

credit: https://devforums.apple.com/thread/241467

Answer 5

I made a subclass of UIScrollView to fix this issue. You only need this method in it:

- (BOOL)touchesShouldBegin:(NSSet *)touches withEvent:(UIEvent *)event inContentView:(UIView *)view
{
    UITouch *touch = [touches anyObject];

    if(touch.phase == UITouchPhaseMoved)
    {
        return NO;
    }
    else
    {
        return [super touchesShouldBegin:touches withEvent:event inContentView:view];
    }
}

Then just remember to set the class to your subclass in the storyboard if you're using one and you're good to go.