Widget _operationBtnTable(BuildContext context) {
    return TDTable(
      columns: [
        TDTableCol(title: '标题', colKey: 'title1', ellipsis: true),
        TDTableCol(title: '标题', colKey: 'title2'),
        TDTableCol(title: '标题', colKey: 'title3'),
        TDTableCol(
          title: '标题',
          colKey: 'title4',
          cellBuilder: (BuildContext context) {
            return Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                TDText(
                  '修改',
                  forceVerticalCenter: true,
                  style: TextStyle(
                    color: TDTheme.of(context).brandNormalColor,
                    fontSize: 14,
                    height: 1,
                  ),
                ),
                TDText(
                  '通过',
                  forceVerticalCenter: true,
                  style: TextStyle(
                    color: TDTheme.of(context).brandNormalColor,
                    fontSize: 14,
                    height: 1,
                  ),
                ),
              ],
            );
          },
        )
      ],
      data: _getData(9),
    );
  }