1. 子控件的tag值设置为** + indexPath.row, 得到子控件的tag值 - ** = indexPath.row
2. 子控件添加到cell.contentView上
//获得row
NSInteger row = [[self.tableView indexPathForCell:(UITableViewCell *)[[sender superview] superview]] row];
//获得section
NSInteger row = [[self.tableView indexPathForCell:(UITableViewCell *)[[sender superview] superview]] section];
//获得indexPath
NSIndexPath *indexPath = [self.tableView indexPathForCell:(UITableViewCell *)[[sender superview] superview]];
3.子控件直接添加到cell上
//获得row
NSInteger row = [[self.tableView indexPathForCell:(UITableViewCell *)[sender superview]] row];
//获得section
NSInteger section = [[self.tableView indexPathForCell:(UITableViewCell *)[sender superview]] section];
//获得indexPath
NSIndexPath *indexPath = [self.tableView indexPathForCell:(UITableViewCell *)[sender superview]];
