[Flutter] 만보기 3 work manager 사용

workmanager | Flutter package

Flutter Workmanager. This plugin allows you to schedule background work on Android and iOS.

https://pub.dev/packages/workmanager

1. workmanager 라이브러리란?

2. 라이브러리 설치

3. 적용하기

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:project_app/ui/callback_dispatcher.dart';
import 'package:workmanager/workmanager.dart';

import '_core/constants/http.dart';
import '_core/constants/move.dart';
import '_core/constants/theme.dart';

GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();

void main() {

//초기화 및 주기적인 백그라운드 작업 등록
  WidgetsFlutterBinding.ensureInitialized();
  Workmanager().initialize(callbackDispatcher, isInDebugMode: true);
  Workmanager().registerPeriodicTask(
      "1",
      fetchBackground,
      frequency: Duration(minutes: 15),);

      dio.interceptors.add(interceptor);
  runApp(ProviderScope(child: const MyApp()));
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      navigatorKey: navigatorKey, // context가 없는 곳에서 context를 사용할 수 있는 방법
      debugShowCheckedModeBanner: false,
      initialRoute: Move.welcomePage,
      routes: getRouters(),
      theme: theme(),
      // home: const WelcomePage(),  //
    );
  }
}

import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:project_app/ui/main/activity/pages/step_count_detail_page.dart';
import 'package:workmanager/workmanager.dart';

import '../_core/constants/http.dart';
import 'main/activity/viewmodel/walking_detail.viewmodel.dart';

const fetchBackground = "fetchBackground";

void callbackDispatcher() {
  Workmanager().executeTask((task, inputData) async {
    switch (task) {
      case fetchBackground:
      // 걸음 수를 서버에 전송하는 로직
        String? stepsString = await secureStorage.read(key: 'current_steps');
        int steps = int.tryParse(stepsString ?? '0') ?? 0;
        final container = ProviderContainer();
        await container.read(WalkingDetailProvider.notifier).sendStepsToServer(steps);
        break;
    }
    return Future.value(true);
  });
}