如何在Flutter Scaffold小部件中使整个身体成为textField？

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter TextField Example'),
      ),
      body: Center(
        child: Padding(
          padding: EdgeInsets.all(16.0),
          child: TextField(
            decoration: InputDecoration(
              border: OutlineInputBorder(),
              labelText: 'Enter your text',
            ),
          ),
        ),
      ),
    );
  }
}