Плагин Google Maps вылетает приложение Flutter при отображении

Question

Всякий раз, когда я пытаюсь отобразить виджет карт Google, мое приложение вылетает, причина, указанная в журналах:

W/com.foody.food( 6310): Unsupported class loader
W/com.foody.food( 6310): Skipping duplicate class check due to unsupported classloader
I/DynamiteModule( 6310): Considering local module com.google.android.gms.maps_dynamite:0 and remote module com.google.android.gms.maps_dynamite:221
I/DynamiteModule( 6310): Selected remote version of com.google.android.gms.maps_dynamite, version >= 221
V/DynamiteModule( 6310): Dynamite loader version >= 2, using loadModule2NoCrashUtils
W/com.foody.food( 6310): Unsupported class loader
I/Google Maps Android API( 6310): Google Play services client version: 12451000
I/Google Maps Android API( 6310): Google Play services package version: 15090039
I/DpmTcmClient( 6310): RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
E/GoogleMapController( 6310): Cannot enable MyLocation layer as location permissions are not granted
E/AndroidRuntime( 6310): FATAL EXCEPTION: Thread-4
E/AndroidRuntime( 6310): Process: com.foody.foody, PID: 6310
E/AndroidRuntime( 6310): java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/ProtocolVersion;
E/AndroidRuntime( 6310):    at fb.b(:com.google.android.gms.dynamite_mapsdynamite@15090083@15.0.90 (100408-231259764):3)
E/AndroidRuntime( 6310):    at fa.a(:com.google.android.gms.dynamite_mapsdynamite@15090083@15.0.90 (100408-231259764):3)
E/AndroidRuntime( 6310):    at fc.a(:com.google.android.gms.dynamite_mapsdynamite@15090083@15.0.90 (100408-231259764):15)
E/AndroidRuntime( 6310):    at com.google.maps.api.android.lib6.drd.al.a(:com.google.android.gms.dynamite_mapsdynamite@15090083@15.0.90 (100408-231259764):6)
E/AndroidRuntime( 6310):    at ee.a(:com.google.android.gms.dynamite_mapsdynamite@15090083@15.0.90 (100408-231259764):23)
E/AndroidRuntime( 6310):    at ee.run(:com.google.android.gms.dynamite_mapsdynamite@15090083@15.0.90 (100408-231259764):8)
E/AndroidRuntime( 6310): Caused by: java.lang.ClassNotFoundException: Didn't find class "org.apache.http.ProtocolVersion" on path: DexPathList[[zip file "/data/user_de/0/com.google.android.gms/app_chimera/m/00000035/MapsDynamite.apk"],nativeLibraryDirectories=[/data/user_de/0/com.google.android.gms/app_chimera/m/00000035/MapsDynamite.apk!/lib/arm64-v8a, /system/lib64]]
E/AndroidRuntime( 6310):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
E/AndroidRuntime( 6310):    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
E/AndroidRuntime( 6310):    at ad.loadClass(:com.google.android.gms.dynamite_dynamiteloader@15090083@15.0.90 (100408-231259764):4)
E/AndroidRuntime( 6310):    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
E/AndroidRuntime( 6310):    ... 6 more
I/Process ( 6310): Sending signal. PID: 6310 SIG: 9
Lost connection to device.

Мой AndroidManifest выглядит так:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.foody.foody">

    <!-- The INTERNET permission is required for development. Specifically,
         flutter needs it to communicate with the running application
         to allow setting breakpoints, to provide hot reload, etc.
    -->
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
         calls FlutterMain.startInitialization(this); in its onCreate method.
         In most cases you can leave this as-is, but you if you want to provide
         additional functionality it is fine to subclass or reimplement
         FlutterApplication and put your custom class here. -->
    <application
        android:name="io.flutter.app.FlutterApplication"
        android:label="foody"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <!-- This keeps the window background of the activity showing
                 until Flutter renders its first frame. It can be removed if
                 there is no splash screen (such as the default splash screen
                 defined in @style/LaunchTheme). -->
            <meta-data
                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
                android:value="true" />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="AIzaSyBM8ywYw1UDb3aXaTF3w21EJ86ePWmAkPE"/>
    </application>
</manifest>

И япопробуйте отобразить карту следующим образом:

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'reservation.dart';
import 'dart:async';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'package:flutter/services.dart';
import 'feed.dart';


class info extends StatelessWidget {
  info([this.id]);

  Completer<GoogleMapController> _controller = Completer();

  static final CameraPosition _kGooglePlex = CameraPosition(
    target: LatLng(37.42796133580664, -122.085749655962),
    zoom: 14.4746,
  );

  int id;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      floatingActionButton: FloatingActionButton.extended(
        onPressed: () {
          Navigator.push(
            context,
            MaterialPageRoute(builder: (context) => Reservation(id)),
          );
        },
        icon: Icon(Icons.calendar_today),
        label: Text('Book a Table'),
        backgroundColor: Colors.blueGrey,
      ),
      body: _buildBody(context),
    );
  }

  Widget _buildBody(BuildContext context) {
    return StreamBuilder<QuerySnapshot>(
      stream: Firestore.instance
          .collection('restaurants')
          .where('id', isEqualTo: id)
          .snapshots(),
      builder: (context, snapshot) {
        if (!snapshot.hasData) return LinearProgressIndicator();

        return _buildList(context, snapshot.data.documents);
      },
    );
  }

  Widget _buildList(BuildContext context, List<DocumentSnapshot> snapshot) {

    return ListView(
      physics: BouncingScrollPhysics(),
      shrinkWrap: true,
      children: <Widget>[
        new Container(
          decoration: new BoxDecoration(boxShadow: [
            new BoxShadow(
              color: Colors.blueGrey,
              blurRadius: 20.0,
            )
          ]),
          child: new Image.network(snapshot[0].data['picURL']),
        ),
        Padding(
          padding: const EdgeInsets.all(7.0),
          child: Text(snapshot[0].data['name'],
              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 36)),
        ),
        Padding(
          padding: const EdgeInsets.all(7.0),
          child: Text(snapshot[0].data['desc'],
              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 36)),
        ),
        Container(
          height: 500.0,
          width: 500.0,
          child: GoogleMap(
            rotateGesturesEnabled: true,
            scrollGesturesEnabled: true,
            tiltGesturesEnabled: true,
            mapType: MapType.normal,
            initialCameraPosition: _kGooglePlex,
            onMapCreated: (GoogleMapController controller) {
              controller.addMarker(
                  MarkerOptions(
                    position: LatLng(37.42796133580664, -122.085749655962),
                  ),
              );
              _controller.complete(controller);
            },
          ),
        ),
      ],
    );
  }
}

Я попытался добавить плагин simple_permissions, однако у этого плагина, похоже, были свои ошибки, поэтому я остановился.Код хорошо работает на эмуляторе, но только на моем телефоне.Спасибо

Answer 1

Решение состоит в том, чтобы обновить ваш проект до AndroidX.

Но не делайте этого вручную, используйте Android Studio, как описано здесь: https://flutter.dev/docs/development/packages-and-plugins/androidx-compatibility

Answer 2

Я получил похожую ошибку, поместив приведенный ниже код в AndroidManifest.xml , чтобы решить проблему.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>