Android Studio Google Maps 在 Android 设备上工作但不在模拟器上工作

Question

我正在尝试使用从 Google 云平台获得的 Google 地图 API 密钥获取我在 Android Studio 中的当前位置。如果我运行我 phone 上的应用程序，一切都很好。如果我在模拟器上运行应用程序，我的位置似乎是 Google Plex，如下图所示（这是完全错误的）： emulator app showing the wrong location

我不确定是因为 API 键还是 code/persmission/GPS 中的错误？我从教程中获取了代码，但现在看来 Google Client 已被弃用（不确定这是否是问题所在）。我相信这是因为模拟器，但我不知道 why.I 目前正在使用 Pixel 2 API 26.

我会在这里展示代码：

  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="com.google.android.providers.gsf.permisson.READ_GSERVICES"/>
<meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="@string/google_maps_key" />

BUILD.GRADLE:

implementation 'com.google.android.gms:play-services-maps:17.0.1'
implementation 'com.google.android.gms:play-services-location:18.0.0'

地图 ACTIVITY:

public class GoogleMapsActivity extends FragmentActivity implements OnMapReadyCallback,
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener,
    LocationListener {

private GoogleMap mMap;
private GoogleApiClient googleClient;
private LocationRequest locationRequest;
private Location ultimateLocation;
private Marker markerCurrentLocation;
private static final int Request_User_Location_Code = 90;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_google_maps);

    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
    {
        checkLocationPermission();
    }

    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
    assert mapFragment != null;
    mapFragment.getMapAsync(this);

}

@Override
public void onMapReady(@NotNull GoogleMap googleMap) {
    mMap = googleMap;
    //current location
    if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
        createGoogleApiClient();
        mMap.setMyLocationEnabled(true);
    }


}

protected synchronized void createGoogleApiClient() { // ok
    googleClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    googleClient.connect();

}

@Override
public void onLocationChanged(@NonNull Location location) { // ok
    ultimateLocation = location;
    if (markerCurrentLocation !=null)
    {
        markerCurrentLocation.remove();;
    }
    LatLng coordinates = new LatLng(location.getLatitude(), location.getLongitude());
    MarkerOptions markerOptions = new MarkerOptions();
    markerOptions.position(coordinates);
    markerOptions.title("Current Location");
    markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE));

    markerCurrentLocation = mMap.addMarker(markerOptions);
    mMap.moveCamera(CameraUpdateFactory.newLatLng(coordinates));
    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(), location.getLongitude()), 17.0f));

    if(googleClient!=null)
    {
        LocationServices.FusedLocationApi.removeLocationUpdates(googleClient,this);
    }
    else
    {
        Toast.makeText(this, "NULLLLLLLL", Toast.LENGTH_SHORT).show();
    }

}


@Override
public void onConnected(@Nullable Bundle bundle) { // ok
    locationRequest = new LocationRequest();
    locationRequest.setInterval(1100);
    locationRequest.setFastestInterval(1100);
    locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
        LocationServices.FusedLocationApi.requestLocationUpdates(googleClient, locationRequest, this);
    }
}

public boolean checkLocationPermission(){ // ok
    boolean ret;
    if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
        if(ActivityCompat.shouldShowRequestPermissionRationale(this,Manifest.permission.ACCESS_FINE_LOCATION))
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, Request_User_Location_Code);
        }
        else
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, Request_User_Location_Code);

        }
        ret = false;
    }
    else
    {
        ret = true;
    }
    return ret;
}
//ok
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    switch (requestCode)
    {
        case Request_User_Location_Code:
            if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
            {
                if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)== PackageManager.PERMISSION_GRANTED)
                {
                    if(googleClient==null)
                    {
                        createGoogleApiClient();;
                    }
                    mMap.setMyLocationEnabled(true);
                }
            }
            else
            {
                Toast.makeText(this, " PERMISSION DENIED", Toast.LENGTH_SHORT).show();
            }
            return ;
    }
}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

}

}

Answer 1

只需转到模拟器控件（三点菜单）并在 Location 选项卡中，固定地图中的任意位置并单击 Set Location。

然后验证您是否收到了您在应用中期望的位置。

Android Studio Google Maps 在 Android 设备上工作但不在模拟器上工作

Android Studio Google Maps Working on Android Device but not on Emulator

android

location

google-maps

android-emulator

android-studio