Locationlistener on Background Services

Before creating this service if you have requesting location update on the other part of your app, make sure you call removeLocationUpdate(). So the service can get the right location update.

LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, context);

public class LocationTrackingService extends Service implements LocationListener, GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener{

    protected GoogleApiClient googleApiClient;

    @Override
    public void onCreate() {

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        if(googleApiClient != null && !googleApiClient.isConnected())
            googleApiClient.connect();
        else if(googleApiClient == null) {
            createGoogleApiClient();
        }

        return START_STICKY;
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
        googleApiClient.disconnect();
    }

    @Override
    public void onLocationChanged(Location location) {
        Log.d("LOCATION CHANGED", "onLocationChanged: "+ location.toString());
    }

    @Override
    public void onConnected(Bundle bundle) {

        LocationRequest locRequest = new LocationRequest();
        locRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locRequest.setInterval(60000*15); // update location every 15 minutes
        locRequest.setFastestInterval(60000*5); // set fastest for 5 minutes
        locRequest.setSmallestDisplacement(10);
        startLocationUpdate(locRequest);
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }

    private void startLocationUpdate(LocationRequest locRequest){
        // checkpermission for location access on Android 6.0
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
                == PackageManager.PERMISSION_GRANTED) {
            LocationServices.FusedLocationApi.requestLocationUpdates(
                    googleApiClient, locRequest, this);
        }
    }

    private createGoogleApiClient(){
        googleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();

        googleApiClient.connect();
    }
}