Search code examples
objective-cxcodeiosuiscrollview

UIScrollView direction from scrollViewWillBeginDecelerating

Is it possible to retrieve the direction that a UIScrollView is scrolling to, in the method;

-(void) scrollViewWillBeginDecelerating:(UIScrollView *)scrollView

If so, how can this be achieved?

Solution

  • you could try something like this:

    - (void)scrollViewDidScroll:(UIScrollView *)sender 
{
  xCoord = scrollview.contentOffset.x;
}

-(void) scrollViewWillBeginDecelerating:(UIScrollView *)sender 
{

   if (xCoord > scrollView.contentOffset.x) {
     //RIGHT
   } else if (xCoord < scrollView.contentOffset.x) {
     //LEFT
   }

}

    store the x coord of the scrollViews contentOffset when it begins scrolling, then compare it in scrollViewWillBeginDecelerating