如何通过自定义标记选项在HMS地图中显示当前位置？

import com.huawei.hms.maps.HuaweiMap;
import com.huawei.hms.maps.OnMapReadyCallback;
import com.huawei.hms.maps.SupportMapFragment;
import com.huawei.hms.maps.model.LatLng;
import com.huawei.hms.maps.model.MarkerOptions;
import com.huawei.hms.maps.model.BitmapDescriptorFactory;

public class MapActivity extends AppCompatActivity implements OnMapReadyCallback {

    private HuaweiMap huaweiMap;

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

        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    }

    @Override
    public void onMapReady(HuaweiMap map) {
        huaweiMap = map;

        // 获取当前位置
        LatLng currentLocation = new LatLng(39.915, 116.404);

        // 添加当前位置标记
        MarkerOptions markerOptions = new MarkerOptions()
                .position(currentLocation)
                .title("当前位置")
                .icon(BitmapDescriptorFactory.fromResource(R.drawable.custom_marker));

        huaweiMap.addMarker(markerOptions);
        huaweiMap.moveCamera(CameraUpdateFactory.newLatLngZoom(currentLocation, 15));
    }
}