116 lines
2.6 KiB
Dart
116 lines
2.6 KiB
Dart
import 'package:flutter/material.dart';
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void main() {
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runApp(const MyApp());
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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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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colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
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useMaterial3: true,
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),
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home: const MyHomePage(title: 'My first app with flutter'),
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);
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}
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}
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class MyHomePage extends StatefulWidget {
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const MyHomePage({super.key, required this.title});
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final String title;
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@override
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State<MyHomePage> 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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int _time = 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 _startTime() {
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setState(() {
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_time = 0;
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});
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for (int i = 0; i < 20001; i++) {
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Future.delayed(Duration(milliseconds: i), () {
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if (_time == 20000) {
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_showFullScreenImage();
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} else {
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setState(() {
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_time = i;
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});
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}
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});
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}
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}
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void _showFullScreenImage() {
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showDialog(
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context: context,
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barrierDismissible: false,
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builder: (BuildContext context) {
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return Dialog(
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backgroundColor: Colors.transparent,
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insetPadding: EdgeInsets.zero,
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child: GestureDetector(
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onTap: () {
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Navigator.of(context).pop();
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},
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child: SizedBox.expand(
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child: Image.asset('assets/pict.png', fit: BoxFit.cover),
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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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@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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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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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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const SizedBox(height: 20),
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const Text(
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'Timer value:',
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),
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Text(
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'$_time',
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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: Row(
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mainAxisAlignment: MainAxisAlignment.end,
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children: [
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const SizedBox(width: 10),
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FloatingActionButton(
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onPressed: _startTime,
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tooltip: 'Start Timer',
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child: const Icon(Icons.timer),
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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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