76 lines
1.5 KiB
Dart
76 lines
1.5 KiB
Dart
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import 'package:flutter/material.dart';
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void main() {
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runApp(MyApp());
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}
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class MyApp extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Flutter Demo',
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theme: ThemeData(
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primarySwatch: Colors.blue,
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),
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home: MyHomePage(title: 'Hello World'),
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);
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}
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}
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class MyHomePage extends StatefulWidget {
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MyHomePage({Key? key, required this.title}) : super(key: key);
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final String title;
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@override
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_MyHomePageState createState() => _MyHomePageState();
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}
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class _MyHomePageState extends State<MyHomePage> {
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int _counter = 0;
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void _incrementCounter() {
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setState(() {
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_counter++;
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});
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}
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void _reset() {
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setState(() {
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_counter = 0;
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(widget.title),
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),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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Text(
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'You have pushed the button this many times:',
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),
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Text(
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'$_counter',
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style: Theme.of(context).textTheme.headline4,
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),
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ElevatedButton(
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onPressed: _reset,
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child: Text('Reset'),
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)
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],
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),
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),
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floatingActionButton: FloatingActionButton(
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onPressed: _incrementCounter,
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tooltip: 'Increment',
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child: Icon(Icons.add),
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),
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);
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}
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}
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