如何在Flutter DataTable中编辑单元格

import 'package:flutter/material.dart';

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Editable DataTable')),
        body: MyDataTable(),
      ),
    );
  }
}

class MyDataTable extends StatefulWidget {
  @override
  _MyDataTableState createState() => _MyDataTableState();
}

class _MyDataTableState extends State<MyDataTable> {
  List<Map<String, dynamic>> _data = [
    {'name': 'John', 'age': 25},
    {'name': 'Jane', 'age': 30},
    {'name': 'Bob', 'age': 35},
  ];

  Map<String, bool> _editStatus = {};

  @override
  Widget build(BuildContext context) {
    return DataTable(
      columns: [
        DataColumn(label: Text('Name')),
        DataColumn(label: Text('Age')),
      ],
      rows: _data.map((item) {
        int index = _data.indexOf(item);
        return DataRow(
          cells: [
            DataCell(
              _editStatus[index] == true
                  ? TextFormField(
                      initialValue: item['name'],
                      onChanged: (value) {
                        setState(() {
                          _data[index]['name'] = value;
                        });
                      },
                    )
                  : Text(item['name']),
              onTap: () {
                setState(() {
                  _editStatus[index] = true;
                });
              },
            ),
            DataCell(
              _editStatus[index] == true
                  ? TextFormField(
                      initialValue: item['age'].toString(),
                      onChanged: (value) {
                        setState(() {
                          _data[index]['age'] = int.parse(value);
                        });
                      },
                    )
                  : Text(item['age'].toString()),
              onTap: () {
                setState(() {
                  _editStatus[index] = true;
                });
              },
            ),
          ],
        );
      }).toList(),
    );
  }
}