LocationLiveData.kt

class LocationLiveData(context: Context) : LiveData<LocationModel>() {

    private var fusedLocationClient = LocationServices.getFusedLocationProviderClient(context)

    override fun onInactive() {
        super.onInactive()
        fusedLocationClient.removeLocationUpdates(locationCallback)
    }

    @SuppressLint("MissingPermission")
    override fun onActive() {
        super.onActive()
        fusedLocationClient.lastLocation
            .addOnSuccessListener { location: Location? ->
                location?.also {
                    setLocationData(it)
                }
            }
        startLocationUpdates()
    }
}