如何在Stack小部件中添加PageView小部件？

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Stack(
          children: [
            PageView(
              children: [
                Container(
                  color: Colors.red,
                  child: Center(
                    child: Text('Page 1'),
                  ),
                ),
                Container(
                  color: Colors.blue,
                  child: Center(
                    child: Text('Page 2'),
                  ),
                ),
                Container(
                  color: Colors.green,
                  child: Center(
                    child: Text('Page 3'),
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}