protected void onResume() {
        super.onResume();
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                1000 * 10, 10, locationListener);
        locationManager.requestLocationUpdates(
                LocationManager.NETWORK_PROVIDER, 1000 * 10, 10,
                locationListener);
    }

    private LocationListener locationListener = new LocationListener() {

        @Override
        public void onLocationChanged(Location location) {

            showLocation(location);
        }

        @Override
        public void onProviderDisabled(String provider) {

        }

        @Override
        public void onProviderEnabled(String provider) {
             showLocation(locationManager.getLastKnownLocation(provider));
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {

        }
    };

    private void showLocation(Location location) {
        if (location!=null)
        {
            // Сохраним предыдущие координаты для добавления их в путь
            if (dest!=null){
                src = dest;
            }

            if (marker!=null) {
                marker.remove();
            }


            MarkerOptions startMarkerOptions = new MarkerOptions().position(new LatLng(location.getLatitude(), location.getLongitude()));
            marker=map.addMarker(startMarkerOptions);
            marker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN)); // устанавливаем цвет маркера зеленый\

            // Сохраним новые координаты
            dest = new LatLng(location.getLatitude(),location.getLongitude());

            if ((src!=null) & (src!=dest)) {
                PolylineOptions polylineOptions = new PolylineOptions().add(src,dest).width(2).color(Color.BLUE).geodesic(true);
                map.addPolyline(polylineOptions);

            }

        }

    }