Detect uiscrollview position

detect-uiscrollview-pos.md

@interface MyViewController : UIViewController<UIScrollViewDelegate>
@end

Then you can hook to the UIScrollView:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Set self as scroll view protocol
    webView.scrollView.delegate = self;
}

Then finally detect the top and bottom being reached:

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{   
    if(scrollView.contentOffset.y 
       >= 
       (scrollView.contentSize.height - scrollView.frame.size.height)){
        NSLog(@"BOTTOM REACHED");
    }
    if(scrollView.contentOffset.y <= 0.0){
        NSLog(@"TOP REACHED");
    }
}