这里SDK在地图上标记位置

Question

我在地图上显示了用户的位置，但我想做的是标记相同的位置

在 onCreate 中我得到了用户的位置：

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

        // Get a MapView instance from layout


        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);

        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        latitud=location.getLatitude();
        longitud=location.getLongitude();

        mapView = findViewById(R.id.map_view);
        mapView.onCreate(savedInstanceState);

        handleAndroidPermissions();
    }

然后我想在加载地图时做的是显示它并打上标记，我是这样做的：

 private void loadMapScene() {
        // Load a scene from the SDK to render the map with a map style.
        mapView.getMapScene().loadScene(MapStyle.NORMAL_DAY, new MapScene.LoadSceneCallback() {
            @Override
            public void onLoadScene(@Nullable MapScene.ErrorCode errorCode) {
                if (errorCode == null) {
                    mapObjectsExample = new MapObjectsExample(mapView);

                    GeoCoordinates geoCoordinates=new GeoCoordinates( latitud,longitud);

                    MapImage mapImage = MapImageFactory.fromResource(getApplicationContext().getResources(), R.drawable.here_car);
                    MapMarker mapMarker = new MapMarker( geoCoordinates, mapImage);

                    mapView.getMapScene().addMapMarker(mapMarker);

                    mapView.getCamera().setTarget(new GeoCoordinates( latitud,longitud));
                    mapView.getCamera().setZoomLevel(15);

                } else {
                    Log.d(TAG, "onLoadScene failed: " + errorCode.toString());
                }
            }
        });
    }

但我得到：

MapMarker(long, java.lang.Object)' has protected access in 'com.here.sdk.mapviewlite.MapMarker'

问题出在这句话：

                MapMarker mapMarker = new MapMarker( geoCoordinates, mapImage);

Answer 1

在 lite Product Variant 中，我们不能将图像对象直接传递给 MapMarker constructor.Below 是我们如何在 lite Variant 中使用图像标记的代码片段。 github 示例中也包含相同内容。

Github link: https://github.com/heremaps/here-sdk-examples/tree/master/examples/latest/lite/android/MapMarkerLite

  MapImage mapImage = MapImageFactory.fromResource(context.getResources(), R.drawable.here_car);

MapMarker mapMarker = new MapMarker(geoCoordinates);
mapMarker.addImage(mapImage, new MapMarkerImageStyle());

mapView.getMapScene().addMapMarker(mapMarker);

这里SDK在地图上标记位置

Here SDK mark position on map

sdk

android

here-api

heremaps

heremaps-android-sdk