如何在文本小工具中添加文本字段？- Flutter

TextField(
  decoration: InputDecoration(
    labelText: '请输入文本',
  ),
)

import 'package:flutter/material.dart';

class MyTextTool extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('文本小工具'),
      ),
      body: Center(
        child: TextField(
          decoration: InputDecoration(
            labelText: '请输入文本',
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MyTextTool(),
  ));
}