75 lines
1.4 KiB
Dart
75 lines
1.4 KiB
Dart
import 'package:flutter/material.dart';
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class CalcScreen extends StatefulWidget {
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const CalcScreen({super.key});
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@override
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State<CalcScreen> createState() => _CalcScreenState();
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}
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class _CalcScreenState extends State<CalcScreen> {
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int _count = 0;
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void _increment() {
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setState(() {
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_count++;
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});
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}
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void _decrement() {
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setState(() {
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_count--;
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});
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}
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void _reset() {
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setState(() {
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_count = 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: const Text('Counter'),
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),
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body: Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const Text('Current count'),
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const SizedBox(height: 8),
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Text(
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'$_count',
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style: Theme.of(context).textTheme.displaySmall,
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),
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const SizedBox(height: 20),
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Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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IconButton(
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onPressed: _decrement,
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icon: const Icon(Icons.remove_circle_outline),
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tooltip: 'Decrement',
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),
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const SizedBox(width: 12),
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ElevatedButton(
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onPressed: _reset,
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child: const Text('Reset'),
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),
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const SizedBox(width: 12),
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IconButton(
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onPressed: _increment,
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icon: const Icon(Icons.add_circle_outline),
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tooltip: 'Increment',
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),
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],
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),
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],
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),
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),
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);
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}
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}
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