55 lines
1.2 KiB
Dart
55 lines
1.2 KiB
Dart
import 'package:flutter/material.dart';
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class CounterPage extends StatefulWidget {
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const CounterPage({super.key});
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@override
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State<CounterPage> createState() => _CounterPageState();
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}
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class _CounterPageState extends State<CounterPage> {
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int _counter = 0;
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@override
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void initState() {
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print('======_CounterPageState#initState==============');
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super.initState();
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}
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@override
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void dispose() {
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print('======_CounterPageState#dispose==============');
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super.dispose();
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}
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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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@override
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Widget build(BuildContext context) {
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return Scaffold(
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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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const 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.headlineMedium,
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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: const Icon(Icons.add),
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),
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);
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}
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} |