flutter - 如何将数据表转换为listview.builder？(How to transform datatable to listview.builder?)

Question

I have a function that use dataTable widget.

(我有一个使用dataTable小部件的函数。)

But I need to use ListView.Builder widget instead dataTable.

(但是我需要使用ListView.Builder小部件而不是dataTable。)

How I can transform this function?

(如何转换此功能？)

Some code:

(一些代码：)

SingleChildScrollView _dataCol() {
    return SingleChildScrollView(
      scrollDirection: Axis.vertical,
      child: SingleChildScrollView(
        child: CustomDataTable(
          columns: [
            CustomDataColumn(label: Text('')),],
          rows: List<int>.generate(max(_filterEmployees.length, 11), (i) => i)
              .map((num) {
                if (num < _filterEmployees.length) {
                  return _filterEmployees[num];
                }
                return Employee();})
              .map(
                (employee) => CustomDataRow(cells: [
                  CustomDataCell(
                    Container(
                      constraints: BoxConstraints(
                          maxWidth: MediaQuery.of(context).size.width * 0.41),
                      width: MediaQuery.of(context).size.width * 0.28 +
                          _scrollBarOffset,
                      child: Text(
                        employee.facName != null ? employee.facName : '',
                        style: TextStyle(
                          color: Color.fromARGB(255, 39, 58, 77),
                          fontWeight: FontWeight.w500,
                          fontSize: 12,
                        ),
                        overflow: TextOverflow.ellipsis,
                        maxLines: 2,
                      ),),onTap: () {
                      ...});},),]),).toList(),),),);}

I try to do this, Here is my code for listview.builder, but it doesn't work.

(我尝试执行此操作，这是我的listview.builder代码，但不起作用。)

I see RangeError:

(我看到RangeError：)

ListView _dataCol() {
    return new ListView.builder(
        scrollDirection: Axis.vertical,
        shrinkWrap: true,
        itemCount: _filterEmployees == null ? 0 : _filterEmployees.length,
        itemBuilder: (BuildContext context, int index) {
          return ListTile(
              title: Text(
            _facNameController.text[index] != null
                ? _facNameController.text[index]
                : '',
            style: TextStyle(
              color: Color.fromARGB(255, 39, 58, 77),
              fontWeight: FontWeight.w500,
              fontSize: 12,
            ),
            overflow: TextOverflow.ellipsis,
            maxLines: 2,
          ));
        });
  }

  ask by WhyTooHard translate from so

Answer 1

等待大神答复