چرا متد onLocationChanged فراخوانی نمی شود ؟

سلام بچه ها
من میخوام موقعیت کاربر رو بگیرم و با توجه به موقعیتش و نقطه ای  که روی نقشه انتخاب می کنیم عمل مسیریابی رو انجام بدم
اما اصلا متد onLocationChanged  فراخوانی نمیشه!
دلیلش چی میتونه باشه و چه راه حلی پیشنهاد میدین ؟

public class MapOriginal extends FragmentActivity implements OnMapReadyCallback {

  private GoogleMap mMap;
  private LatLng origen, destination;
  double latX, lonY;


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

    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
      .findFragmentById(R.id.map2);
    mapFragment.getMapAsync(this);


    LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
    LocationListener locationListener = new LocationListener() {

      @Override
      public void onLocationChanged(Location location) {
        latX = location.getLatitude();
        lonY = location.getLongitude();
        origen = new LatLng(latX, lonY);
        Log.i("origen", origen + "test");
        mMap.addMarker(new MarkerOptions().position(origen).title("Marker in Lamered"));
      }

      @Override
      public void onStatusChanged(String s, int i, Bundle bundle) {

      }

      @Override
      public void onProviderEnabled(String s) {

      }

      @Override
      public void onProviderDisabled(String s) {

      }
    };



    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
      return;
    }
//    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

  
  }

  @Override
  public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

//    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(lamerd, 16));

    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(origen, 15.5f), 4000, null);
    mMap.getUiSettings().setZoomControlsEnabled(true);
//    type of map
    mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);

    //    create circle shape on the map
    CircleOptions circleOptions = new CircleOptions().center(origen).radius(100).strokeColor(Color.CYAN);
    Circle circle = mMap.addCircle(circleOptions);

//    create Polygon shape on the map
    PolygonOptions polygonOptions = new PolygonOptions().add(new LatLng(27.334231, 53.185669), new LatLng(27.336307, 53.187374), new LatLng(27.336563, 53.188213), new LatLng(27.335746, 53.189575), new LatLng(27.333886, 53.188321)).strokeColor(Color.GREEN);
    Polygon polygon = mMap.addPolygon(polygonOptions);


    mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
      @Override
      public void onMapClick(LatLng latLng) {
//        mMap.clear();
        destination = new LatLng(latLng.latitude, latLng.longitude);
        mMap.addMarker(new MarkerOptions().position(destination).title("Marker in Lamered"));

        double distance = 0;
        Location location1 = new Location("A");
        location1.setLatitude(origen.latitude);
        location1.setLongitude(origen.longitude);

        Location location2 = new Location("B");
        location2.setLatitude(destination.latitude);
        location2.setLongitude(destination.longitude);

        distance = location1.distanceTo(location2);
        double KM = (int) distance / 1000;
        double Meter = (int) distance % 1000;

        Toast.makeText(getApplicationContext(), "KM: " + KM + "  Meter: " + Meter, Toast.LENGTH_LONG).show();

        String serverKey = "my server key";
        GoogleDirection.withServerKey(serverKey)
          .from(origen)
          .to(destination)
          .transitMode(TransportMode.DRIVING)
          .execute(new DirectionCallback() {
            @Override
            public void onDirectionSuccess(Direction direction, String rawBody) {
              String status = direction.getStatus();
              if (direction.isOK()) {
                Route route = direction.getRouteList().get(0);
                Leg leg = route.getLegList().get(0);
                ArrayList<LatLng> directionPositionList = leg.getDirectionPoint();
                PolylineOptions polygonOptions = DirectionConverter.createPolyline(getApplicationContext(), directionPositionList, 5, Color.RED);
                mMap.addPolyline(polygonOptions);
              }
            }

            @Override
            public void onDirectionFailure(Throwable t) {
              // Do something here
            }
          });
      }
    });
  }
}