How to Get Users Current Location on Google Maps in Flutter?

import 'package:flutter/material.dart';
import 'package:google_maps/HomePage.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // on below line we are specifying title of our app
      title: 'GFG',
      // on below line we are hiding debug banner
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // on below line we are specifying theme
        primarySwatch: Colors.green,
      ),
      // First screen of our app
      home: const HomePage(),
    );
  }
}

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  Completer<GoogleMapController> _controller = Completer();
  // on below line we have specified camera position
  static final CameraPosition _kGoogle = const CameraPosition(
      target: LatLng(20.42796133580664, 80.885749655962),
    zoom: 14.4746,
  );

  // on below line we have created the list of markers
  final List<Marker> _markers = <Marker>[
    Marker(
        markerId: MarkerId('1'),
      position: LatLng(20.42796133580664, 75.885749655962),
      infoWindow: InfoWindow(
        title: 'My Position',
      )
  ),
  ];

  // created method for getting user current location
  Future<Position> getUserCurrentLocation() async {
    await Geolocator.requestPermission().then((value){
    }).onError((error, stackTrace) async {
      await Geolocator.requestPermission();
      print("ERROR"+error.toString());
    });
    return await Geolocator.getCurrentPosition();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Color(0xFF0F9D58),
        // on below line we have given title of app
        title: Text("GFG"),
      ),
       body: Container(
        child: SafeArea(
          // on below line creating google maps
          child: GoogleMap(
          // on below line setting camera position 
          initialCameraPosition: _kGoogle,
          // on below line we are setting markers on the map
          markers: Set<Marker>.of(_marker),
          // on below line specifying map type. 
          mapType: MapType.normal,
          // on below line setting user location enabled.
          myLocationEnabled: true,
          // on below line setting compass enabled. 
          compassEnabled: true,
          // on below line specifying controller on map complete. 
          onMapCreated: (GoogleMapController controller){
                _controller.complete(controller);
            },
          ),
        ),
      ), 
      // on pressing floating action button the camera will take to user current location
      floatingActionButton: FloatingActionButton(
        onPressed: () async{
          getUserCurrentLocation().then((value) async {
            print(value.latitude.toString() +" "+value.longitude.toString());

            // marker added for current users location
            _markers.add(
                Marker(
                  markerId: MarkerId("2"),
                  position: LatLng(value.latitude, value.longitude),
                  infoWindow: InfoWindow(
                    title: 'My Current Location',
                  ),
                )
            );

            // specified current users location
            CameraPosition cameraPosition = new CameraPosition(
              target: LatLng(value.latitude, value.longitude),
              zoom: 14,
            );

            final GoogleMapController controller = await _controller.future;
            controller.animateCamera(CameraUpdate.newCameraPosition(cameraPosition));
            setState(() {
            });
          });
        },
        child: Icon(Icons.local_activity),
      ),
    );
  }
}