iOS 根据判断UITableView或者UIScrollVie

-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    CGFloat height = scrollView.frame.size.height;
    CGFloat contentOffsetY = scrollView.contentOffset.y;
    CGFloat bottomOffset = scrollView.contentSize.height - contentOffsetY;
    if (bottomOffset <= height)
    {
        //在最底部
        self.currentIsInBottom = YES;
    }
    else
    {
        self.currentIsInBottom = NO;
    }
}