Created
February 28, 2021 08:59
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import 'dart:async'; | |
import 'package:flutter/material.dart'; | |
void main() => runApp(MyApp()); | |
class MyApp extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
title: 'Flutter Demo', | |
theme: ThemeData( | |
primarySwatch: Colors.red, | |
), | |
home: MyHomePage(title: 'Epic Page'), | |
); | |
} | |
} | |
class MyHomePage extends StatefulWidget { | |
MyHomePage({Key key, this.title}) : super(key: key); | |
final String title; | |
@override | |
_MyHomePageState createState() => _MyHomePageState(); | |
} | |
class _MyHomePageState extends State<MyHomePage> { | |
double _progress = 0; | |
void startTimer() { | |
new Timer.periodic( | |
Duration(seconds: 1), | |
(Timer timer) => | |
setState( | |
() { | |
if (_progress > 1) { | |
timer.cancel(); | |
setState(() { | |
_progress = 0; | |
}); | |
startTimer(); | |
} else { | |
_progress += 0.1; | |
} | |
}, | |
), | |
); | |
} | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
appBar: AppBar( | |
title: Text(widget.title), | |
), | |
body: Center( | |
child: LinearProgressIndicator( | |
value: _progress, | |
backgroundColor: Colors.amber, | |
valueColor: AlwaysStoppedAnimation<Color>(Colors.blue), | |
) | |
) | |
); | |
} | |
} | |
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