Last active
July 20, 2019 10:04
-
-
Save snova301/f8e119797b3e0e409431347c2670897d to your computer and use it in GitHub Desktop.
flutter_stopwatch
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import 'dart:async'; | |
import "package:intl/intl.dart"; | |
import 'package:flutter/material.dart'; | |
void main() => runApp(MyApp()); | |
class MyApp extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
title: 'Timer App', | |
theme: ThemeData( | |
primarySwatch: Colors.blueGrey | |
), | |
home: DefaultTabController( | |
length: 2, | |
child: Scaffold( | |
appBar: AppBar( | |
bottom: TabBar( | |
tabs: [ | |
Tab(text: '時計'), | |
Tab(text: 'ストップウォッチ'), | |
], | |
), | |
title: Text('時間アプリ'), | |
), | |
body: TabBarView( | |
children: [ | |
ClockPage(), | |
StopwatchPage(), | |
], | |
), | |
), | |
), | |
); | |
} | |
} | |
class ClockPage extends StatefulWidget { | |
@override | |
_ClockPageState createState() => _ClockPageState(); | |
} | |
class StopwatchPage extends StatefulWidget { | |
@override | |
_StopwatchPageState createState() => _StopwatchPageState(); | |
} | |
class _ClockPageState extends State<ClockPage> { | |
Timer _timer; | |
final _formatter = DateFormat('y/MM/dd HH:mm:ss'); | |
@override | |
void initState() { | |
super.initState(); | |
_timer = Timer.periodic( | |
Duration(seconds: 1), | |
(_t) => setState(() {}), | |
); | |
} | |
@override | |
void dispose() { | |
_timer.cancel(); | |
super.dispose(); | |
} | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
body: Center( | |
child: Column( | |
mainAxisAlignment: MainAxisAlignment.center, | |
children: <Widget>[ | |
Text( | |
'現在時間', | |
style: TextStyle(fontSize: 25), | |
), | |
Text( | |
'${_formatter.format(DateTime.now())}', | |
style: TextStyle(fontSize: 30), | |
) | |
], | |
) | |
) | |
); | |
} | |
} | |
class _StopwatchPageState extends State<StopwatchPage> { | |
Timer _timer; | |
final _formatter = DateFormat('HH:mm:ss.S'); | |
var StartTime = 0; | |
var NowTime = 0; | |
var RunState = 0; // 0:stop, 1:run | |
@override | |
void initState() { | |
super.initState(); | |
_timer = Timer.periodic( | |
Duration(milliseconds: 123), // 数値小->高速に時間刻む | |
(_t) => setState(() {}), | |
); | |
} | |
@override | |
void dispose() { | |
_timer.cancel(); | |
super.dispose(); | |
} | |
@override | |
Widget build(BuildContext context) { | |
if (RunState==1){ | |
NowTime = DateTime.now().millisecondsSinceEpoch.toInt(); | |
} | |
void _StartButton(){ | |
if (RunState == 0){ | |
StartTime = DateTime.now().millisecondsSinceEpoch.toInt(); | |
NowTime = DateTime.now().millisecondsSinceEpoch.toInt(); | |
RunState = 1; | |
} | |
} | |
void _StopButton(){ | |
if (RunState == 1){ | |
RunState = 0; | |
} | |
else{ | |
StartTime = 0; | |
NowTime = 0; | |
} | |
} | |
var DiffTime = DateTime.fromMillisecondsSinceEpoch(NowTime - StartTime).toUtc(); | |
var ButtonWidget = Row( | |
mainAxisAlignment: MainAxisAlignment.center, | |
children: <Widget>[ | |
IconButton( | |
icon: Icon(Icons.play_circle_filled), | |
iconSize: 50, | |
onPressed: _StartButton, | |
color: Colors.green, | |
), | |
IconButton( | |
icon: Icon(Icons.stop), | |
iconSize: 50, | |
onPressed: _StopButton, | |
color: Colors.red, | |
), | |
], | |
); | |
var DiffWidget = Row( | |
mainAxisAlignment: MainAxisAlignment.center, | |
children: <Widget>[ | |
Column( | |
mainAxisAlignment: MainAxisAlignment.center, | |
children:[ | |
Text( | |
'時間差', | |
style: TextStyle(fontSize: 25), | |
), | |
Text( | |
'${_formatter.format(DiffTime)}', | |
style: TextStyle(fontSize: 30), | |
), | |
], | |
), | |
], | |
); | |
return Column( | |
mainAxisAlignment: MainAxisAlignment.center, | |
children: <Widget>[ | |
DiffWidget, | |
ButtonWidget, | |
], | |
); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment