- (void)scrollsToBottomAnimated:(BOOL)animated
{
CGFloat offset = self.tableView.contentSize.height - self.tableView.bounds.size.height;
if (offset > 0)
{
[self.tableView setContentOffset:CGPointMake(0, offset) animated:animated];
}
}原文：http://www.cnblogs.com/z-j-w/p/5067338.html