Widget buildTime(BuildContext context) {
    return GestureDetector(
      onTap: (){
        TDPicker.showMultiPicker(context, title: '选择时间',
            onConfirm: (selected) {
              setState(() {
                selected_2 = '${data_2[0][selected[0]]} ${data_2[1][selected[1]]}';
              });
              Navigator.of(context).pop();
            }, data: data_2);
      },
      child: buildSelectRow(context, selected_2, '选择时间'),
    );
  }