我的当前位置总是在 Flutter 中定位 google plex

Question

当我单击当前位置按钮时，我的当前位置总是显示 Google Plex。我不知道错误在哪里，因为我已经添加了我的 API 并询问了

的用户权限

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

在 AndriodManifest.xml 中。我真的需要帮助来解决这个问题。提前致谢！

location_map.dart

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

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

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

class _LocationMapState extends State<LocationMap> {
  late GoogleMapController mapController;

  final LatLng _center = const LatLng(3.140853, 101.693207);

  Set<Marker> markers = {};

  void _onMapCreated(GoogleMapController controller) {
    mapController = controller;
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Scaffold(
        body: Stack(
          children: [
            SizedBox(
                height: MediaQuery.of(context).size.height,
                width: double.infinity,
                child: GoogleMap(
                    markers: markers,
                    mapType: MapType.normal,
                    myLocationEnabled: true,
                    onMapCreated: _onMapCreated,
                    initialCameraPosition:
                        CameraPosition(target: _center, zoom: 10),
                    
                )
            ),
            Padding(
              padding: const EdgeInsets.fromLTRB(5, 10, 70, 0),
              child: SizedBox(
                height: 40,
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.start,
                  children: [
                    Expanded(
                        flex: 1,
                        child: IconButton(
                          icon: const Icon(Icons.arrow_back_ios),
                          onPressed: () {
                            Navigator.pop(context);
                          },
                        )),
                    Expanded(
                      flex: 9,
                      child: TextField(
                        decoration: InputDecoration(
                            filled: true,
                            fillColor: Colors.white,
                            hintText: 'Enter Your Location',
                            hintStyle: primaryFontStyle,
                            suffixIcon: const Icon(Icons.search),
                            contentPadding: const EdgeInsets.only(
                                left: 20, bottom: 0, right: 0),
                            focusedBorder: OutlineInputBorder(
                              borderRadius: BorderRadius.circular(5),
                              //borderSide: const BorderSide(width: 0.5),
                            ),
                            enabledBorder: OutlineInputBorder(
                              borderRadius: BorderRadius.circular(5),
                              //borderSide: const BorderSide(width: 0.5),
                            )),
                      ),
                    ),
                  ],
                ),
              ),
            ),
            Positioned(
              bottom: 20,
              left: 10,
              child: FloatingActionButton.extended(
                onPressed: () async {
                  Position position = await _determinePosition();

                  mapController.animateCamera(CameraUpdate.newCameraPosition(
                      CameraPosition(
                          target: LatLng(position.latitude, position.longitude),
                          zoom: 12.0)));

                  markers.clear();

                  markers.add(Marker(
                      markerId: const MarkerId('currentLocation'),
                      position: LatLng(position.latitude, position.longitude)));

                  setState(() {});
                },
                backgroundColor: secondaryColor,
                label: const Text('Current Location'),
                icon: const Icon(Icons.location_history),
              ),
            )
          ],
        ),
      ),
    );
  }

  Future<Position> _determinePosition() async {
    bool serviceEnabled;
    LocationPermission permission;

    serviceEnabled = await Geolocator.isLocationServiceEnabled();

    if (!serviceEnabled) {
      return Future.error('Location services are disabled');
    }

    permission = await Geolocator.checkPermission();

    if (permission == LocationPermission.denied) {
      permission = await Geolocator.requestPermission();

      if (permission == LocationPermission.denied) {
        return Future.error('Location permission denied');
      }
    }

    if (permission == LocationPermission.deniedForever) {
      return Future.error('Location permissions are permanently denied');
    }

    Position position = await Geolocator.getCurrentPosition(
        desiredAccuracy: LocationAccuracy.high,
        forceAndroidLocationManager: true);
    print(position.latitude);
    print(position.longitude);
    return position;
  }
}

AndriodManifest.xml

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

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

   <application
        android:label="final_year_project"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher">
         
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        // Don't delete the meta-data below.
             // This is used by the Flutter tool to generate GeneratedPluginRegistrant.java
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
        <meta-data android:name="com.google.android.geo.API_KEY"
               android:value="MY_API_KEY"/>
    </application>
</manifest>

Answer 1

您使用的是模拟器还是真机？模拟器使用 Google Plex 作为其默认位置。要设置不同的位置，您必须通过单击边栏底部的省略号来打开模拟器的扩展控件。

我的当前位置总是在 Flutter 中定位 google plex

My current location always locates google plex in Flutter

android

google-maps

currentlocation

dart

flutter