Custom Map For Location Picker

// Begin custom widget code
// DO NOT REMOVE OR MODIFY THE CODE ABOVE!

import 'package:google_maps_flutter/google_maps_flutter.dart' as GoogleMaps;
import 'package:geocoding/geocoding.dart';

class CustomMapForLocationPicker extends StatefulWidget {
  const CustomMapForLocationPicker({
    super.key,
    this.width,
    this.height,
    required this.onTapMap,
  });

  final double? width;
  final double? height;
  final Future<dynamic> Function(String address, double lat, double long)
      onTapMap;

  @override
  State<CustomMapForLocationPicker> createState() =>
      _CustomMapForLocationPickerState();
}

class _CustomMapForLocationPickerState
    extends State<CustomMapForLocationPicker> {
  GoogleMaps.GoogleMapController? _controller;
  late GoogleMaps.LatLng _selectedLatLng;
  GoogleMaps.LatLng currentLatLng =
      GoogleMaps.LatLng(FFAppState().currentLat, FFAppState().currentLng);
  String _selectedAddress = '';
  Set<GoogleMaps.Marker> _markers = Set();

  @override
  void initState() {
    super.initState();
    getCurrentPosition().then((value) {
      if (mounted) {
        setState(() {
          currentLatLng = GoogleMaps.LatLng(
              FFAppState().currentLat, FFAppState().currentLng);
          _controller?.animateCamera(GoogleMaps.CameraUpdate.newCameraPosition(
              GoogleMaps.CameraPosition(
            target: currentLatLng,
            zoom: 12,
          )));
        });
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: [
        Expanded(
          child: GoogleMaps.GoogleMap(
            initialCameraPosition: GoogleMaps.CameraPosition(
              target: currentLatLng,
              zoom: 12,
            ),
            onMapCreated: (GoogleMaps.GoogleMapController controller) {
              _controller = controller;
            },
            onTap: _addMarker,
            mapType: GoogleMaps.MapType.normal,
            markers: _markers,
            myLocationButtonEnabled: false,
          ),
        ),
      ],
    );
  }

  void _addMarker(GoogleMaps.LatLng latLng) async {
    setState(() {
      _selectedLatLng = latLng;
      _markers.clear();
      _markers.add(
        GoogleMaps.Marker(
          markerId: GoogleMaps.MarkerId('TappedLocation'),
          position: latLng,
          infoWindow: GoogleMaps.InfoWindow(
            title: '$_selectedAddress',
            snippet: '${latLng.latitude}, ${latLng.longitude}',
          ),
        ),
      );
      print("$_selectedAddress");
      widget.onTapMap(_selectedAddress, _selectedLatLng.latitude,
          _selectedLatLng.longitude);
    });

    List<Placemark> placemarks =
        await placemarkFromCoordinates(latLng.latitude, latLng.longitude);

    if (placemarks.isNotEmpty) {
      Placemark placemark = placemarks.first;
      setState(() {
        _selectedAddress =
            '${placemark.street}, ${placemark.locality}, ${placemark.administrativeArea}, ${placemark.country}';
      });
    }

    _controller?.animateCamera(GoogleMaps.CameraUpdate.newLatLng(latLng));
  }
}