接着上一篇Flutter入门配置环境成功后,进行了第一个例子的实战,步骤如下:
1.打开Android Studio,选择File——New——New Flutter Project,创建Flutter项目
2. 选择Flutter Application——Next,点击Next之后填写创建项目的相关信息
3.依次填写项目名、Flutter sdk path(Flutter sdk路径)、Project location(项目存放位置工作空间)、Description(项目简单描述)
4.输入包名后,点击Finish,进行项目构建阶段 ,此时需等待一段时间.
5.项目创建完成之后的目录如下:
6.基本设置:在main.dart中设置标题和文字内容,点击事件等
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter 辅导',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'flutter实例!'),//设置标题文字
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'你好,flutter',//设置内容
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),//按钮
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
7.运行出来界面截图如下:
这样一个简单的入门小例子就完成了,后面会慢慢加上其他功能和效果,新手上路,如有问题,敬请谅解!