Google Maps

vijaya · December 2022

google_maps_flutter: ^2.0.1
location: ^4.2.0
geocode: 1.0.1



static final LatLng _kMapCenter = LatLng(17.387140, 78.491684);

LocationData? currentLocation;
String address = "";
GoogleMapController? _controller;



GoogleMap(

    initialCameraPosition: CameraPosition(
        target: currentLocation != null
            ? LatLng(
            currentLocation?.latitude ?? 0.0, currentLocation?.longitude ?? 0.0):_kMapCenter
             ,
        zoom: 20.0,
    ),
  myLocationEnabled: true,
  zoomControlsEnabled: false,
  zoomGesturesEnabled: true,
  myLocationButtonEnabled: false,
  onMapCreated: (GoogleMapController controller) {
    _controller = controller;
  },
),

inside onclick

_getLocation().then((value) {
  LocationData? location = value;
  _getAddress(location?.latitude, location?.longitude)
      .then((value) {
    setState(() {
      currentLocation = location;
      address = value;
    });
  });
});

methods

Future<LocationData?> _getLocation() async {
  Location location = Location();
  LocationData _locationData;

  bool _serviceEnabled;
  PermissionStatus _permissionGranted;

  _serviceEnabled = await location.serviceEnabled();
  if (!_serviceEnabled) {
    _serviceEnabled = await location.requestService();
    if (!_serviceEnabled) {
      return null;
    }
  }
  _permissionGranted = await location.hasPermission();
  if (_permissionGranted == PermissionStatus.denied) {
    _permissionGranted = await location.requestPermission();
    if (_permissionGranted != PermissionStatus.granted) {
      return null;
    }
  }

  _locationData = await location.getLocation();
  _controller?.animateCamera(
    CameraUpdate.newCameraPosition(
      CameraPosition(
        target: LatLng(_locationData.latitude ?? 0.0, _locationData.longitude ?? 0.0),
        zoom: 20.0,
      ),
    ),
  );

  return _locationData;
}

Future<String> _getAddress(double? lat, double? lang) async {
  if (lat == null || lang == null) return "";
  GeoCode geoCode = GeoCode();
  Address address =
      await geoCode.reverseGeocoding(latitude: lat, longitude: lang);
  return "${address.streetAddress}, ${address.city}, ${address.countryName}, ${address.postal}";
}

call inside dispose

if(_controller != null) {
  _controller?.dispose();
}