Disabling vertical scrolling in UIScrollView

Question

There is an option in IB to uncheck vertical scrolling on a scrollview, but it doesnt seem to work.

How can the scrollview be set to only scroll horizontally, and no

Answer 1

You need to pass 0 in content size to disable in which direction you want.

To disable vertical scrolling

scrollView.contentSize = CGSizeMake(scrollView.contentSize.width,0);

To disable horizontal scrolling

scrollView.contentSize = CGSizeMake(0,scrollView.contentSize.height);

Answer 2

Include the following method

-(void)viewDidLayoutSubviews{
    self.automaticallyAdjustsScrollViewInsets = NO;
}

and set the content size width of the scroll view equal to the width of the scroll view.

Answer 3

since iOS7:

first: the content size width must be equal to the width of your scrollview

second: in your initWithNibName:

self.automaticallyAdjustsScrollViewInsets = NO;

That´s it.

Answer 4

I updated the content size to disable vertical scrolling, and the ability to scroll still remained. Then I figured out that I needed to disable vertical bounce too, to disable completly the scroll.

Maybe there are people with this problem too.

Answer 5

A lot of answers include setting the contentOffset to 0. I had a case in which I wanted the view inside the scrollView to be centered. This did the job for me:

public func scrollViewDidScroll(_ scrollView: UIScrollView) {
    scrollView.contentOffset.y = -scrollView.contentInset.top
}

Answer 6

yes, pt2ph8's answer is right,

but if for some strange reason your contentSize should be higher than the UIScrollView, you can disable the vertical scrolling implementing the UIScrollView protocol method

 -(void)scrollViewDidScroll:(UIScrollView *)aScrollView;

just add this in your UIViewController

float oldY; // here or better in .h interface

- (void)scrollViewDidScroll:(UIScrollView *)aScrollView
{
    [aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x, oldY)];
    // or if you are sure you wanna it always on top:
    // [aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x, 0)];
}

it's just the method called when the user scroll your UIScrollView, and doing so you force the content of it to have always the same .y