locationChanged never runs

[ethanzh]

Hello.

I have added mad-location-manager to my Gradle build as well as Android manifest and have implemented LocationServiceInterface within my application. Inside my Fragment's onCreate method I run the following code:

ServicesHelper.getLocationService(getActivity(), value -> {

            if (value.IsRunning()){
                return;
            }
            value.stop();
            KalmanLocationService.Settings settings =
                    new KalmanLocationService.Settings(Utils.ACCELEROMETER_DEFAULT_DEVIATION,
                            Utils.GPS_MIN_DISTANCE,
                            Utils.GPS_MIN_TIME,
                            Utils.GEOHASH_DEFAULT_PREC,
                            Utils.GEOHASH_DEFAULT_MIN_POINT_COUNT,
                            Utils.SENSOR_DEFAULT_FREQ_HZ,
                            null, false);

            value.reset(settings);
            value.start();

            Log.d("MAD", Boolean.toString(value.IsRunning()));
        });

This returns "False" in my LogCat, indicating that even though I 'start' the service it never actually stops running. I have overridden locationChanged() in my Fragment as well to simply log the new latitudes and longitudes but no matter how much walking around I do with the phone this function never runs.

What could be preventing my KalmanLocationService from starting?

[ethanzh]

I have just done some more testing and found something interesting.

When running the tutorial application hosted on this repo with a Samsung Galaxy S5 I am able to get location updates (however I cannot see these on the map, maybe this is because I am in USA and not Russia?). When I run this same test on a different device (https://www.motorola.com/us/products/moto-e-gen-4) it does not work.

Does this have to do with the sensors that are available on the phone?

[Lezh1k]

Hello, @ethanzh

Seem's like everything is fine with motorola. Due to specification accelerometer and magnetometer sensors are presented. I don't think that is's related to gyro.

Could you check that GPS is enabled in phone settings? I saw this behavior when my location source was "network", not "gps".

[ethanzh]

The phone indeed says "gps" and not network.

I think this brings up my broader question: what is the best way to implement your mad-location-manager in an app that already has a different location manager already implemented (in my case, FusedLocationProvider)?

[Lezh1k]

Thant's really stange :)
Can you collect and send some logs?
I can't really help without more details about your project. Do you have some repo or something like that? I'll try to help with that

[ethanzh]

I'm happy to share my code I just have one question first: will mad location manager be more accurate/consistent than FusedLocationManager?

[Lezh1k]

Honestly it needs to be checked.
We don't use FusedLocationManager because of issues with play market on some old phones. :)

[dgaenko]

Спасибо за Ваш труд! Очень интересный проект, но, честно говоря, я так и не понял метода интеграции в свое приложение. Можно совсем коротенький пример для пустого проекта - только интеграция сервиса и получение откорректированных координат (без MVP, плиз).
Заранее премного благодарен.