Flutter- change variable to zero after 1 day - flutter

Question

I am developing a flutter app that user click the button and the counter increase by one.
I want to rest the value of the counter to zero after one day.
Can u please tell me is there anyway to achieve that?
Thank you

Answer 1

You can use flutter_cache package
https://pub.dev/packages/flutter_cache/
import 'package:flutter_cache/flutter_cache.dart' as cache;
void main() async {
// create new cache.
cache.remember('key', 'data');
cache.write('key', 'data');
// add Cache lifetime on create
cache.remember('key', 'data', 120);
cache.write('key', 'data', 120);
// load Cache by key
// return `defaultValue` if key not exists
cache.load('key', 'defaultValue');
// destroy single cache by key
cache.destroy('key');
// destroy all cache
cache.clear();
await cache.remember('key', () {
return 'test'; // or logic fetching data from api;
});
// or
await cache.remember('key', () => 'test');
cache.remember('key', 'data', 120); // saved for 2 mins or 120 seconds
cache.write('key', 'data', 120);
// multi depth map datatype.
cache.remember('key', {
'name': 'Ashraf Kamarudin',
'depth2': {
'name': 'depth2',
'depth3': {'name': 'depth3'}
}
});
cache.load('key'); // will return data in map datatype.
}

Answer 2

Is your requirement passive or active? If it is active, you can refer to the following code. If it is passive, you need to poll regularly
import 'package:flutter/material.dart';
class MyWidget extends StatefulWidget {
const MyWidget({super.key});
#override
State<MyWidget> createState() => _MyWidgetState();
}
class _MyWidgetState extends State<MyWidget> with WidgetsBindingObserver {
DateTime? _presedDate;
var number = 0;
#override
void initState() {
_presedDate = DateTime.now();
super.initState();
}
#override
void didChangeAppLifecycleState(AppLifecycleState lifeCycle) async {
var _isForeground = (lifeCycle == AppLifecycleState.resumed);
if (_isForeground) checkNumber();
super.didChangeAppLifecycleState(lifeCycle);
}
void checkNumber() {
var currenDate = DateTime.now();
var isToday = DateUtils.isSameDay(_presedDate, currenDate);
if (!isToday) {
number == 0;
setState(() {});
}
}
#override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('$number'),
TextButton(
onPressed: () {
number++;
setState(() {});
checkNumber();
},
child: Text('incrementNumber')),
],
),
)));
}
}