在flutter中如何在datatable中创建动态列和行(根据数据列)

import 'package:flutter/material.dart';
import 'package:collection/collection.dart';

class DynamicDataTable extends StatelessWidget {
  final List<Map<String, dynamic>> data;
  final List<String> columns;

  DynamicDataTable({required this.data, required this.columns});

  @override
  Widget build(BuildContext context) {
    return DataTable(
      columns: buildColumns(),
      rows: buildRows(),
    );
  }

  List<DataColumn> buildColumns() {
    return columns.map((String column) {
      return DataColumn(
        label: Text(column),
      );
    }).toList();
  }

  List<DataRow> buildRows() {
    return data.map((Map<String, dynamic> rowData) {
      return DataRow(
        cells: buildCells(rowData),
      );
    }).toList();
  }

  List<DataCell> buildCells(Map<String, dynamic> rowData) {
    return columns.map((String column) {
      return DataCell(
        Text(rowData[column].toString()),
      );
    }).toList();
  }
}

List<Map<String, dynamic>> data = [
  {'name': 'John', 'age': 25, 'gender': 'Male'},
  {'name': 'Jane', 'age': 30, 'gender': 'Female'},
  {'name': 'Tom', 'age': 35, 'gender': 'Male'},
];

List<String> columns = ['name', 'age', 'gender'];

Widget build(BuildContext context) {
  return Scaffold(
    body: DynamicDataTable(data: data, columns: columns),
  );
}