[android] Flutter Google Maps, 이미 생성 된 플랫폼보기를 만들려고 시도하면 ID보기 : 0

나는 또한 같은 문제가 있었고 사용 flutter clean하면 나를 위해 그것을 해결하지 못했습니다 ( 플러터 버전 1.12.13 + 핫픽스 8 )

그러나 위젯에 상태가 아닌 고유 키를 추가 하면 문제가 해결되었습니다.

이것을 보여주는 최소 작업 코드 샘플.

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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Map not crashing demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: LocationScreen(),
    );
  }
}

class LocationScreen extends StatefulWidget
{
  final Key _mapKey = UniqueKey();
  @override
  _LocationScreenState createState() => _LocationScreenState();
}

class _LocationScreenState extends State<LocationScreen>
{
  @override
  Widget build(BuildContext context)
  {
    return Scaffold(
      appBar: AppBar(title: const Text('Map not crashing demo')),
      body: TheMap(key:widget._mapKey)
    );
  }
}

class TheMap extends StatefulWidget
{
  ///key is required, otherwise map crashes on hot reload
  TheMap({ @required Key key})
  :
  super(key:key);

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

class _MyAppState extends State<TheMap>
{
  GoogleMapController _mapController ;

  void _onMapCreated(GoogleMapController controller) {
    _mapController = controller;
  }
  @override
  Widget build(BuildContext context)
  {
    return Scaffold(
      //also this avoids it crashing/breaking when the keyboard is up
      resizeToAvoidBottomInset: false,
      body: GoogleMap(
          onMapCreated: _onMapCreated,
          initialCameraPosition: CameraPosition(
            target: const LatLng(30.0925973,31.3219982),
            zoom: 11.0,
          ),
        )
    );
  }
}

답변