Turn off vertical scrolling in a UIScrollView

Question

IB has an option to undo vertical scrolling on scrollview, but it does not seem to work.

How can I scroll only horizontally, and not vertically in the code, and not in IB?

Answer 1

Try adjusting the height of the contentSize to the height of the scrollView. Then vertical scrolling should be disabled because there will be nothing to scroll vertically.

scrollView.contentSize = CGSizeMake(scrollView.contentSize.width,scrollView.frame.size.height); 

Answer 2

since iOS7:

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

second: in initWithNibName file:

 self.automaticallyAdjustsScrollViewInsets = NO; 

That's all.

Answer 3

yes, pt2ph8 answer is correct,

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

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

just add this to 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 a method called when the user scrolls your UIScrollView and makes sure its contents are always the same .y

Answer 4

Include the following method

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

and set the width of the scroll content to the width of the scroll.

Answer 5

I updated the content size to disable vertical scrolling, and the ability to scroll is still there. Then I realized that I needed to disable the vertical bounce in order to completely disable the scroll.

Perhaps there are people with this problem.

Answer 6

 - (void)scrollViewDidScroll:(UIScrollView *)aScrollView { [aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x,0)]; } 

you must confirm UIScrollViewDelegate

 aScrollView.delegate = self; 

Answer 7

You need to pass 0 in the size of the content to disable it in the right direction.

To disable vertical scrolling

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

To disable horizontal scrolling

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

Answer 8

Just set y always on top. Must match UIScrollViewDelegate

 func scrollViewDidScroll(scrollView: UIScrollView) { scrollView.contentOffset.y = 0.0 } 

This will keep the scroll deceleration / acceleration effect.