[Flutter] 나의 현재 위치 위도,경도 가져오기

코드

코드를 추가하기 전에 pubspec.yaml 파일에 location 패키지를 설치해주어야 한다

dependencies:
  flutter:
    sdk: flutter

  location: ^4.3.0

// main.dart
class _MyHomePageState extends State<MyHomePage> {
  double lat = 0;
  double lng = 0;
  Location location = new Location();
  bool _serviceEnabled = true;
  late PermissionStatus _permissionGranted;

  _locateMe() async {
    _serviceEnabled = await location.serviceEnabled();
    if (!_serviceEnabled) {
      _serviceEnabled = await location.requestService();
      if (!_serviceEnabled) {
        return;
      }
    }

    _permissionGranted = await location.hasPermission();
    if (_permissionGranted == PermissionStatus.denied) {
      _permissionGranted = await location.requestPermission();
      if (_permissionGranted != PermissionStatus.granted) {
        return;
      }
    }
    await location.getLocation().then((value) {
      setState(() {
        lat = value.latitude!;
        lng = value.longitude!;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          children: [
            Expanded(
              child: Center(
                child: Text("Lat: $lat, Lng: $lng"),
              ),
            ),
            Container(
              width: double.infinity,
              child: ElevatedButton(
                child: Text("Locate"),
                onPressed: () => _locateMe(),
              ),
            )
          ],
        ),
      ), 
    );
  }
}

결과

앱 최초 실행 시에는 위치 권한 허용 여부를 묻는 알림창이 뜬다

출처 - https://codesundar.com/flutter-geolocation-example/