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,
); 