如何在flutter中的jpg图像上添加按钮

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter JPG with Button',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('JPG with Button'),
      ),
      body: Center(
        child: Stack(
          children: [
            // 添加JPG图像
            Image.asset(
              'assets/images/image.jpg',
              fit: BoxFit.contain,
            ),
            // 添加按钮
            Positioned(
              top: 100,
              left: 100,
              child: FlatButton(
                child: Text('按钮'),
                onPressed: () {
                  // 添加按钮点击事件处理逻辑
                  // TODO: 在此处添加按钮点击后的操作
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}

flutter:
  assets:
    - assets/images/