iOS tableview滑动到底部自动加载，向上拽加载

- (void)scrollViewDidScroll:(UIScrollView *)aScrollView {

    CGPoint offset = aScrollView.contentOffset;

    CGRect bounds = aScrollView.bounds;

    CGSize size = aScrollView.contentSize;

    UIEdgeInsets inset = aScrollView.contentInset;

    float y = offset.y + bounds.size.height - inset.bottom;

    float h = size.height;

    // NSLog(@"offset: %f", offset.y);   

    // NSLog(@"content.height: %f", size.height);   

    // NSLog(@"bounds.height: %f", bounds.size.height);   

    // NSLog(@"inset.top: %f", inset.top);   

    // NSLog(@"inset.bottom: %f", inset.bottom);   

    // NSLog(@"pos: %f of %f", y, h);



    float reload_distance = 10;

    if(y > h + reload_distance) {

        NSLog(@"load more rows");

    }

}

 

向上拽

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate

{

//    if (isLoading || !hasMore) return;

//    if(scrollView.contentSize.height - (scrollView.contentOffset.y + scrollView.bounds.size.height - scrollView.contentInset.bottom) <= 0 && scrollView.contentOffset.y > 0){

//        [self loadMore];

//    }

}