import 'package:flutter/material.dart';
import 'dart:async';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
Timer _timer;
int _counter = 0;
@override
void initState() {
super.initState();
_startTimer();
}
@override
void dispose() {
_stopTimer();
super.dispose();
}
void _startTimer() {
const duration = Duration(seconds: 5);
_timer = Timer.periodic(duration, (timer) {
setState(() {
_counter++;
});
});
}
void _stopTimer() {
_timer.cancel();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Page Refresh Timer Example'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'Counter: $_counter',
style: TextStyle(fontSize: 24),
),
],
),
),
);
}
}