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Flutter demo app
import 'package:flutter/material.dart';
void main() => runApp(HelloFlutterApp());
class HelloFlutterApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'HelloFlutter',
theme: ThemeData(
primarySwatch: Colors.lightGreen,
),
home: MyHomePage(title: 'Hello Flutter!'),
);
}
}
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(
'You have pushed the button this many times: ',
),
Text(
'$_counter',
style: TextStyle(color: Colors.green, fontSize: 25),
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}
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