Arkadaşlar flutter'a google maps ekledim şöyle bir hata alıyorum.

target: LatLng(latitude,latlongitude), satırında latitude ve longitude değerlerini kabul etmiyip hata veriyor.


Hata şu: The instance member 'longitude' can't be accessed in an initializer. (Documentation) Try replacing the reference to the instance member with a different expression

class MapSampleState extends State<MapSample> {
final String kkonum;
  MapSampleState({required this.kkonum});
  Completer<GoogleMapController> _controller = Completer();

  late List<String> not = kkonum.split(",");
  late double latitude = double.parse(not[0]);
  late double longitude = double.parse(not[1]);

  static final CameraPosition _kGooglePlex = CameraPosition(

target: LatLng(latitude,longitude),
    zoom: 14.4746,
  );