Android Studio开发一个Flutter小应用【flutter入门】

Android Studio开发一个Flutter小应用【flutter入门】

Flutter是谷歌的移动UI框架，可以快速在iOS和Android上构建高质量的原生用户界面。 Flutter可以与现有的代码一起工作。在全世界，Flutter正在被越来越多的开发者和组织使用，并且Flutter是完全免费、开源的。

今天教大家怎么在andriod studio中开发一个flutter应用

打开Android Studio，步骤Preference>plugins>Browes repositories 搜索Flutter 安装并重启Android Studio，就OK了。

如果您做完了上述的所有准备工作，那么我们可以在终端运行一下命令检查环境是否OK。

flutter doctor

[✓] Flutter (Channel beta, v0.4.4, on Mac OS X 10.13.4 17E202, locale zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 9.3.1)
[✓] Android Studio (version 3.1)
[✓] Connected devices (2 available)
• No issues found!

在andriod studio中新建一个项目

点击新建一个flutter项目

新建完成后在lib下面有个main.dart

import 'package:flutter/material.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(

        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text(widget.title),
      ),
      body: new Center(
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            new Text(
              'You have pushed the button this many times:',
            ),
            new Text(
              '$_counter',
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: new FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: new Icon(Icons.add),
      ), 
    );
  }
}

ok，今天就把这个例子介绍完了，官方下载地址：https://flutter.dev/docs/get-started/install