diplomatic-quarter/lib/widgets/app_map/google_huawei_map.dart

import 'dart:async';

import 'package:diplomaticquarterapp/services/pharmacy_services/writeReview_service.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hms_gms_availability/flutter_hms_gms_availability.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'package:huawei_map/map.dart' as hmsMap;

class AppMap extends StatefulWidget {
  CameraPositionCallback onCameraMove;
  Map initialCamera;

  AppMapState _state;
  Function onMapCreated;
  Function onCameraIdle;

  AppMap(this.initialCamera, {this.onCameraMove, this.onMapCreated, this.onCameraIdle});

  @override
  State<StatefulWidget> createState() => _state = AppMapState();

  moveTo({@required CameraPosition cameraPostion}) {
    if (_state.isHuawei) {
      final cameraJson = cameraPostion.toMap();
      final camera = hmsMap.CameraPosition.fromMap(cameraJson);
      _state._huaweiMapController.animateCamera(hmsMap.CameraUpdate.newCameraPosition(camera));
    } else {
      _state.googleMapController.animateCamera(CameraUpdate.newCameraPosition(cameraPostion));
    }
  }
}

class AppMapState extends State<AppMap> {
  bool isHuawei = false;

  Completer<GoogleMapController> _googleMapControllerComp = Completer();
  GoogleMapController googleMapController;

  Completer<hmsMap.HuaweiMapController> _huaweiMapControllerComp = Completer();
  hmsMap.HuaweiMapController _huaweiMapController;

  checkIsHuawei() async {
    isHuawei = await FlutterHmsGmsAvailability.isHmsAvailable;
    setState(() {});
  }

  @override
  void initState() {
    checkIsHuawei();
  }

  @override
  Widget build(BuildContext context) {
    if (isHuawei == null) return CircularProgressIndicator();
    return map();
  }

  Widget map() => isHuawei ? huaweiMap() : googleMap();

  Widget googleMap() {
    return GoogleMap(
      mapType: MapType.normal,
      zoomControlsEnabled: true,
      myLocationButtonEnabled: true,
      myLocationEnabled: true,
      initialCameraPosition: CameraPosition.fromMap(widget.initialCamera),
      onCameraMove: widget.onCameraMove,
      onMapCreated: (GoogleMapController controller) {
        googleMapController = controller;
        _googleMapControllerComp.complete(controller);
        widget.onMapCreated();
      },
      onCameraIdle: widget.onCameraIdle,
    );
  }

  Widget huaweiMap() {
    return hmsMap.HuaweiMap(
      mapType: hmsMap.MapType.normal,
      zoomControlsEnabled: false,
      myLocationButtonEnabled: true,
      myLocationEnabled: true,
      initialCameraPosition: hmsMap.CameraPosition.fromMap(widget.initialCamera),
      onCameraMove: (camera) => widget.onCameraMove(CameraPosition.fromMap(camera.toMap())),
      onMapCreated: (controller) {
        _huaweiMapController = controller;
        _huaweiMapControllerComp.complete(controller);
        widget.onMapCreated();
      },
    );
  }
}