在定位小部件内部使用RaisedButton小部件的问题

import 'package:flutter/material.dart';

class PositionedWidget extends StatefulWidget {
  @override
  _PositionedWidgetState createState() => _PositionedWidgetState();
}

class _PositionedWidgetState extends State<PositionedWidget> {
  @override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        // 其他的定位小部件
        Positioned(
          top: 100, // 设置RaisedButton的顶部偏移
          left: 100, // 设置RaisedButton的左侧偏移
          child: RaisedButton(
            onPressed: () {
              // 按钮点击事件处理
            },
            child: Text('按钮'),
          ),
        ),
      ],
    );
  }
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter 应用',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter 应用栏'),
        ),
        body: Center(
          child: PositionedWidget(),
        ),
      ),
    );
  }
}