在flutter中添加一个带有大小的按钮并在其内部添加图标

import 'package:flutter/material.dart';

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

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

class IconButtonWithSize extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      width: 150.0, // 设置按钮的宽度
      height: 50.0, // 设置按钮的高度
      child: ElevatedButton(
        onPressed: () {
          // 按钮点击事件
          print('Button pressed!');
        },
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Icon(Icons.add, size: 24.0), // 添加图标并设置大小
            SizedBox(width: 8.0), // 图标和文字之间的间距
            Text('Add'), // 按钮上的文字
          ],
        ),
      ),
    );
  }
}