flutter 현재 위치좌표 가져오기

예제를 찾아서 테스트를 하다보면 Android폰에서는 잘 동작되는데, 아이폰에서는 동작이 안되기도 한다.

그래서 양쪽에서 모두 동작하는 걸 찾아서 테스트하기가 쉽지 않다.

location 라이브러리를 추가해서 테스트해보니 Android폰에서는 잘 동작하는데 ios 에서는 설정을 잘못했는지 에러가 발생하여 포기했다. 그리고 geolocator 라이브러리를 활용하여 구현했다.

잘 동작되기는 하는데, onMapReady 보다 늦게 결과가 나와 화면에서 바로 현재 위치로 이동시키는 것은 아직 미해결 상태다.

 

pubspec.yaml

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^1.0.2
  dio: ^5.4.0
  json_annotation: ^4.8.1
  freezed_annotation: ^2.4.1
  retrofit: ^4.0.3
  logger: ^2.0.2+1
  flutter_riverpod: ^2.4.9
  flutter_naver_map: ^1.1.2
  geolocator: ^10.1.0
  permission_handler: ^11.2.0
  flutter_secure_storage: ^4.2.1
 
 
dev_dependencies:
  flutter_test:
    sdk: flutter
  flutter_lints: ^2.0.0
  json_serializable: ^6.7.1
  build_runner: ^2.4.8
  freezed: ^2.4.6
  retrofit_generator: ^8.0.6

 

AndroidManifest.xml 추가사항

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 
    <application

 

ios 설정 추가사항은 https://link2me.tistory.com/2381 게시글의 ios를 참조하면 된다.

 

import 'package:geolocator/geolocator.dart';
 
class LocationService {
  double latitude = 0;
  double longitude = 0;
 
  Future<void> getCurrentLocation() async {
    LocationPermission permission = await Geolocator.checkPermission();
    // print(permission);
    if (permission == LocationPermission.denied) {
      permission = await Geolocator.requestPermission();
    }
    try {
      Position position = await Geolocator.getCurrentPosition(
          desiredAccuracy: LocationAccuracy.high);
      latitude = position.latitude;
      longitude = position.longitude;
    } catch (e) {
      print(e);
    }
  }
}

 

 

import 'package:flutter/material.dart';
import 'package:flutter_naver_map/flutter_naver_map.dart';
import 'package:geolocator/geolocator.dart';
import 'package:location/location.dart';
import 'package:nmap_test/core/component/default_layout.dart';
import 'package:nmap_test/core/res/palette.dart';
import 'package:nmap_test/presentation/view/location_service.dart';
import 'package:permission_handler/permission_handler.dart';
 
class NaverMapScreen extends StatefulWidget {
  const NaverMapScreen({Key? key}) : super(key: key);
 
  @override
  State<NaverMapScreen> createState() => _NaverMapScreenState();
}
 
class _NaverMapScreenState extends State<NaverMapScreen> {
  final location = LocationService();
 
  void _getLocation() async {
    await location.getCurrentLocation();
    double lat = location.latitude;
    double lng = location.longitude;
    print('lat:: $lat  lng::: $lng');
  }
 
  @override
  void initState() {
    super.initState();
    _permission();
    WidgetsBinding.instance.addPostFrameCallback((_) {
     _getLocation();
    });
  }
 
  void _permission() async {
    var requestStatus = await Permission.location.request();
    var status = await Permission.location.status;
    if (requestStatus.isPermanentlyDenied || status.isPermanentlyDenied) {
      openAppSettings();
    }
  }
 
  @override
  Widget build(BuildContext context) {
    return DefaultLayout(
      title: 'Naver Map',
      appbarBgColor: Palette.primary,
      child: NaverMap(
          options: const NaverMapViewOptions(locationButtonEnable: true),
          onMapReady: (controller) {
            print('네이버맵 로딩됨');
          },
        ),
      );
  }
}

 

 

 

Android 에서만 동작이 되는 걸 성공한 코드도 적어둔다.

location: ^5.0.3

class _NaverMapScreenState extends State<NaverMapScreen> {
  final Location location = Location();
  late double lat;
  late double lng;
  late LocationData _locationData;
  late bool _serviceEnabled;
 
  void _getCurrentLocation() async {
    _serviceEnabled = await location.serviceEnabled();
    if (!_serviceEnabled) {
      _serviceEnabled = await location.requestService();
      if (!_serviceEnabled) {
        return;
      }
    }
 
    _locationData = await location.getLocation();
    setState(() {
      lat = _locationData.latitude!;
      lng = _locationData.longitude!;
    });
    print('lat:: $lat  lng::: $lng');
  }
 
  @override
  void initState() {
    super.initState();
    _permission();
    _getCurrentLocation();
  }
 
  void _permission() async {
    var requestStatus = await Permission.location.request();
    var status = await Permission.location.status;
    if (requestStatus.isPermanentlyDenied || status.isPermanentlyDenied) {
      openAppSettings();
    }
  }