Question

Do you guys have any ideas how to call a method every time a certain uiwebview is all the way up on the page ie. so that it can’t scroll up? This function would be great to be able to refresh a page in a smart way.

/Eric

Answer 1

You can use something like this:

In the .h, your code should look something like:

@interface iSafeViewController : UIViewController <UIWebViewDelegate, UIScrollViewDelegate>

Then in the .m

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    //The webview is is scrolling
    float scrollViewHeight = scrollView.frame.size.height;
    float scrollContentSizeHeight = scrollView.contentSize.height;
    float scrollOffset = scrollView.contentOffset.y;

    if (scrollOffset <= 1)
    {
        // then we are at the top

    }
    else if (scrollOffset + scrollViewHeight >= scrollContentSizeHeight - 1)
    {
        // then we are at the end

    }
    else
    {
        //We are somewhere in the middle
    }
}

You will need to set your webView’s scrollView delegate though like this:

[webView.scrollView setDelegate:self];

If that doesn’t work let me know.