Flutter 현재 GPS 10초마다 가져오고 Firestore에 저장하고 렌더하고, 슬립모드에서도 GPS 수집하는 코드

영리치 0 349 02.22 19:45

Flutter 현재 GPS 10초마다 가져오고 렌더하는 코드

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:location/location.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  Location _location = Location();
  List<LocationData> _locationDataList = [];
  Timer? _timer;

  @override
  void initState() {
    super.initState();
    _timer = Timer.periodic(Duration(seconds: 10), (Timer t) => getLocation());
  }

  @override
  void dispose() {
    _timer?.cancel();
    super.dispose();
  }

  void getLocation() async {
    LocationData locationData = await _location.getLocation();
    setState(() {
      _locationDataList.add(locationData);
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('GPS Coordinates'),
        ),
        body: Center(
          child: _locationDataList.isEmpty
              ? Text('Getting location...')
              : ListView.builder(
                  itemCount: _locationDataList.length,
                  itemBuilder: (context, index) {
                    return ListTile(
                      title: Text(
                          'Latitude: ${_locationDataList[index].latitude}\nLongitude: ${_locationDataList[index].longitude}'),
                    );
                  },
                ),
        ),
      ),
    );
  }
}

Firebase 연동 GPS 코드

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:location/location.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_core/firebase_core.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  Location _location = Location();
  List<LocationData> _locationDataList = [];
  Timer? _timer;
  CollectionReference _locationCollection =
      FirebaseFirestore.instance.collection('locations');

  @override
  void initState() {
    super.initState();
    _loadLocationsFromFirestore();
    _timer = Timer.periodic(Duration(seconds: 10), (Timer t) => getLocation());
  }

  @override
  void dispose() {
    _timer?.cancel();
    super.dispose();
  }

  void _loadLocationsFromFirestore() async {
    QuerySnapshot snapshot = await _locationCollection.get();
    List<LocationData> locationDataList = snapshot.docs.map((doc) {
      GeoPoint geoPoint = doc['location'];

      return LocationData.fromMap(
          {'latitude': geoPoint.latitude, 'longitude': geoPoint.longitude});
    }).toList();
    setState(() {
      _locationDataList = locationDataList;
    });
  }

  void getLocation() async {
    LocationData locationData = await _location.getLocation();
    setState(() {
      _locationDataList.add(locationData);
    });
    _saveLocationToFirestore(locationData);
  }

  void _saveLocationToFirestore(LocationData locationData) {
    GeoPoint geoPoint =
        GeoPoint(locationData.latitude!, locationData.longitude!);
    _locationCollection.add({'location': geoPoint});
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('GPS Coordinates'),
        ),
        body: Center(
          child: _locationDataList.isEmpty
              ? Text('Getting location...')
              : ListView.builder(
                  itemCount: _locationDataList.length,
                  itemBuilder: (context, index) {
                    return ListTile(
                      title: Text(
                          'Latitude: ${_locationDataList[index].latitude}\nLongitude: ${_locationDataList[index].longitude}'),
                    );
                  },
                ),
        ),
      ),
    );
  }
}

Comments

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