（转）iPhone 判断UITableView 滚动到底部

UITableView is a subclass of UIScrollView, and UITableViewDelegate conforms to UIScrollViewDelegate. So the delegate you attach to the table view will get events such asscrollViewDidScroll:, and you can call methods such as contentOffset on the table view to find the scroll position.

in the tableview delegate do something like this:

- (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");

		if(!isLoading)
			[self loadMore];
	}
}