How to lock the horizontal scrolling of a scrollVi

Question

i have a scrollView. i want it to scroll only in one direction(VERTICAL). Is there a way in which i can lock the horizontal scrolling...?? ...

Answer 1

self.scrollview.contentSize = CGSizeMake(1, self.scrollview.frame.size.height * number_of_items);

should help. I just locked my scroll view horizontally, by doing the similar technique.

Answer 2

The scrollView is only scrollable horizontally if you set the contentSize width bigger than the scrollView frame. If you set the contentSize width to the same as the scrollview it won't scroll. For example

UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,100,100)] [scrollView setContentSize:CGSizeMake(100, 300)]

Answer 3

The safest and most successful method I've found to constrain the movement of a scroll view is to subclass UIScrollView and override setContentOffset:animated: and setContentOffset: methods (code below).

The advantage of overriding these methods is that it directly alters the requested contentOffset before any of the UIKit code starts to act on it, avoiding any of the side effects that can occur when modifying the contentOffset in scrollViewDidScroll: or other UIScrollViewDelegate methods.

It takes just a few minutes to create the new subclass, and it works like a charm.

- (void)setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated {
    // restrict movement to vertical only
    CGPoint newOffset = CGPointMake(0, contentOffset.y);
    [super setContentOffset:newOffset animated:animated];
}

- (void)setContentOffset:(CGPoint)contentOffset {
    // restrict movement to vertical only
    CGPoint newOffset = CGPointMake(0, contentOffset.y);
    [super setContentOffset:newOffset];    
}

Answer 4

In my case the contentSize was higher than the UIScrollView for x and y. For me meronixe's answer worked out quite well, but was for my needs not quite complete. Unfortunately the horizontal scrollbar was still visible.

This I could change with the following code in

- (void)webViewDidFinishLoad:(UIWebView *)webView

[self.webView.scrollView setShowsHorizontalScrollIndicator:NO];