Geofire updating background location

Question

I’m making an application , the location system is similar to the Uber , who needs to send the location to firebase from 3 in 3 seconds , to get the current location live , but when the app is in the background , he stops updating , can help me?

the code that sends the data to firebase is this

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    Common.mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
    if (Common.mLastLocation != null )
    {
        if (location_switch.isChecked())
        {
            final double latitude = Common.mLastLocation.getLatitude();
            final double longitude = Common.mLastLocation.getLongitude();

            //// PASSAR DADOS PARA O FIREBASE
            geoFire.setLocation(FirebaseAuth.getInstance().getCurrentUser().getUid(), new GeoLocation(latitude, longitude), new GeoFire.CompletionListener() {
                @Override
                public void onComplete(String key, DatabaseError error) {
                    // ADICIONA MARCADOR NO MAPA
                    if (mCurrent != null)
                        mCurrent.remove();
                    mCurrent = mMap.addMarker(new MarkerOptions()

                            .position(new LatLng(latitude, longitude))

                            .title("Voce"));



                    /// Movimentar camera para sua posicao
                    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude, longitude), 15.0f));