android - LocationServices.FusedLocationApi.getLastLocation(googleApiClient) 在模拟器上始终为 null

Question

我不知道模拟器出了什么问题。我无法使用此命令进行定位

LocationServices.FusedLocationApi.getLastLocation(googleApiClient)

在我的模拟器中，支持 gps 和 google play 服务，但无法获取当前位置。位置 = 空。需要帮忙。这是我的代码:

  private void configureGoogleApiClient() {
        locationRequest = LocationRequest.create();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(Constant.INTERVAL);
        locationRequest.setFastestInterval(Constant.FASTINTERVAL);

        googleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
        if (googleApiClient != null) {
            googleApiClient.connect();
        }
    }

    @Override
    protected void onStart() {
        super.onStart();
        if (googleApiClient != null) {
            googleApiClient.connect();
        }
    }

    protected void onStop() {
        // Disconnecting the client invalidates it.
        if (googleApiClient != null) {
            googleApiClient.disconnect();
        }
        super.onStop();
    }


    @Override
    protected void onPause() {
        super.onPause();
        if (googleApiClient != null) {
            googleApiClient.disconnect();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            if (googleApiClient != null)
                googleApiClient.connect();
        }
    }

    @Override
    public void onConnected(@Nullable Bundle bundle) {
        if (googleApiClient.isConnected()) {
            Log.e(MainActivity.class.getSimpleName(), "Is connected");
        } else
            Log.e(MainActivity.class.getSimpleName(), "Is not connected");

        if (manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            Log.e(MainActivity.class.getSimpleName(), "Is connected on GPS");
        } else {
            Log.e(MainActivity.class.getSimpleName(), "Is not connected on GPS");
        }

        Utility.checkPermission(this);
        location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);

        if (location == null) {
            Utility.checkPermission(this);
            LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
        }

        if (location != null) {
            latText.setText("Lat: " + String.valueOf(location.getLatitude()));
            longText.setText("Long: " + String.valueOf(location.getLongitude()));
        } else {
            latText.setText(getString(R.string.error_find_location));
            longText.setText(getString(R.string.error_find_location));
        }
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        Log.e(MainActivity.class.getSimpleName(), connectionResult.toString());
    }

    @Override
    public void onLocationChanged(Location location) {
        currentLocation = location;
        if (googleApiClient != null)
            if (googleApiClient.isConnected() || googleApiClient.isConnecting()) {
                googleApiClient.disconnect();
                googleApiClient.connect();
            } else if (!googleApiClient.isConnected()) {
                googleApiClient.connect();
            }
        String msg = "Updated Location: " + Double.toString(location.getLatitude()) + "," + Double.toString(location.getLongitude());
        Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
        configureView();
    }

Answer 1

我的猜测是最后一个位置只显示最后一个位置。它实际上并不试图找出位置。在您的手机上，另一个应用程序可能请求了该位置。所以，还有最后一个位置。

如果没有位置，我已添加此代码以请求位置。

Location userLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
if (userLocation == null) {
    LocationRequest locationRequest = new LocationRequest();
    locationRequest.setNumUpdates(1);
    locationRequest.setInterval(0);
    locationRequest.setPriority(PRIORITY_HIGH_ACCURACY);
    LocationServices.FusedLocationApi.requestLocationUpdates(
            googleApiClient, locationRequest,
            new LocationListener() {
                @Override
                public void onLocationChanged(Location location) {
                    LocationServices.FusedLocationApi.removeLocationUpdates(
                            googleApiClient,
                            this);
                }
            });