How to disable vertical scrolling in UIScrollView (Obj-C)

Question

I want to disable vertical scrolling from my UIScrollView if possible.. My code is like below.. Working fine except users can scroll up and down which shouldn't be there I believe.. Thanks in advance..

    UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 100, self.view.frame.size.width, self.view.frame.size.height / 3)];   
    scroll.contentSize = CGSizeMake(scroll.contentSize.width,scroll.frame.size.height); 
    scroll.pagingEnabled = YES;
    scroll.backgroundColor = [UIColor blackColor];
    int xVal = 30;

    NSInteger numberOfViews = 5;
    for (int i = 0; i < numberOfViews; i++) {
        UILabel *testLabel1 = [[UILabel alloc] initWithFrame:CGRectMake(xVal, 0, 90, 100)];
        UILabel *testLabel2 = [[UILabel alloc] initWithFrame:CGRectMake(xVal, 20, 90, 100)];
        UILabel *testLabel3 = [[UILabel alloc] initWithFrame:CGRectMake(xVal, 40, 90, 100)];

        testLabel2.backgroundColor = [UIColor clearColor];
        testLabel2.text =@"Test1";
        testLabel2.textColor = [UIColor whiteColor];
        testLabel2.font = [UIFont boldSystemFontOfSize:12];

        testLabel1.backgroundColor = [UIColor clearColor];
        testLabel1.text =@"Test2";
        testLabel1.textColor = [UIColor whiteColor];
        testLabel1.font = [UIFont boldSystemFontOfSize:12];

        testLabel3.backgroundColor = [UIColor clearColor];
        testLabel3.text =@"Test3";
        testLabel3.textColor = [UIColor whiteColor];
        testLabel3.font = [UIFont boldSystemFontOfSize:12];

        xVal += 120;

        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(xVal, 30, 150, 130)];
        view.backgroundColor = [UIColor blackColor];

        xVal += 200;

        [scroll addSubview:testLabel1];
        [scroll addSubview:testLabel2];
        [scroll addSubview:testLabel3];
        [scroll addSubview:view];
    }

    [self.view addSubview:scroll];

Answer 1

In my situation, I was unable to get the height of the scrollview (due to autolayout, I wasn't able to get the height in viewDidLoad). You can add this to the delegate method.

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    self.scrollView.contentOffset = CGPointMake(self.scrollView.contentOffset.x, 0);
}

Answer 2

you must set your scrollview content height to the scroll view height

CGSize scrollableSize = CGSizeMake(scrollableWidth, yourScrollViewHeight);
[myScrollView setContentSize:scrollableSize];

Answer 3

Here may be a possible duplicate

disabling vertical scrolling in UIScrollView

or you can also try this:

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

Answer 4

Assuming it's an iPhone app, so the screen resolution is 320×480 .

Now you are setting your scroll view's height as self.view.frame.size.height / 3 . Here your view's height is actually taken as 460 and not 480 (20px for staus bar).

So when you add the other view as subview to your scroll view, its frame goes out of the scroll's content view. So you need to manage this while setting your frames/content size.

Let me know if this works for you.