【 Flutter 】Flutter を 基礎 から 学習 ( Material ComponentsとiOS-Style ) part138 Material Components

import 'package:flutter/material.dart';

void main() {
  runApp(new MaterialApp(home: new MyHomePage()));
}

class MyHomePage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _MyHomePageState();
  }
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: Scaffold(
        appBar: AppBar(
          centerTitle: true,
          title: Text('sample'),
        ),
        body: ButtonBar(children: <Widget>[
          ElevatedButton(onPressed: () {}, child: const Text('ボタン1')),
          ElevatedButton(onPressed: () {}, child: const Text('ボタン2')),
          ElevatedButton(onPressed: () {}, child: const Text('ボタン3')),
        ], alignment: MainAxisAlignment.spaceBetween),
      ),
    );
  }
}