UILongPressGestureRecognizer *longGestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(editPathAction:)];
    longGestureRecognizer.minimumPressDuration = 0.7;
    longGestureRecognizer.numberOfTouchesRequired = 1;
    longGestureRecognizer.view.tag = indexPath.row;
    cell.contentView.tag = indexPath.row;
    [cell.contentView addGestureRecognizer:longGestureRecognizer];

在 tableViewCell 上添加了一个长按手势，在手势方法 editPathAction: 中需要确认是哪一个cell触发了方法，cell.contentView.tag = indexPath.row 给cell一个 tag 值，在 editPathAction: 方法中获取cell

- (void)editPathAction:(UILongPressGestureRecognizer *)longGestureRecognizer{
    //长按会两次触发手势方法，可通过 longGestureRecognizer.state == UIGestureRecognizerStateBegan 判断来解决该问题
    if (longGestureRecognizer.state == UIGestureRecognizerStateBegan) {
        NSInteger index = longGestureRecognizer.view.tag;
        NSDictionary *dic = _dataSource[index];
    }
}

NSInteger index = longGestureRecognizer.view.tag ，可以获取到触发方法的 cell 的 tag 值，即可确定是哪一个 cell 触发了方法，也就能获取到 cell 的数据。
***其中，longGestureRecognizer.view 就是添加手势的那个 view，此处即是 cell.contentView。