import 'package:flutter/material.dart';
void main() {
runApp(TestApplication());
}
class TestApplication extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Test Application',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MainPage(title: 'Test Application'),
);
}
}
class MainPage extends StatefulWidget {
final String title;
MainPage({Key key, this.title}) : super(key: key);
@override
_MainPageState createState() => _MainPageState();
}
class _MainPageState extends State<MainPage> {
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: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}