UIScrollView: single tap scrolls it to top

Question

I have the UIScrollView with pagingEnabled set to YES, and programmatically scroll its content to bottom:

CGPoint contentOffset = scrollView.contentOffset;
c         


        

Answer 1

The following workaround did help (assume that one extends UIScrollView with a category, so 'self' refers to its instance):

-(BOOL) scrolledToBottom
{
    return (self.contentSize.height <= self.frame.size.height) ||
           (self.contentOffset.y == self.contentSize.height - self.frame.size.height);
}

Then, one should sometimes turn pagingEnabled off, just at the position where scroll view reaches its bottom. In the delegate (pagingEnabled is initialy on of course, since the problem occurs only when it is enabled):

-(void) scrollViewDidScroll:(UIScrollView *)scrollView
{
    if (scrollView.pagingEnabled == YES)
    {
        if ([scrollView scrolledToBottom] == YES)
            scrollView.pagingEnabled = NO;
    }
    else
    {
        if ([scrollView scrolledToBottom] == NO)
            scrollView.pagingEnabled = YES;
    }
}