How can I set sensitivity for my gps tracker?

Question

Could you please help me? I have a task to make a GPS tracker that would pass GPS data to Firebase. But the key point is that the tracker should have the following sensitivity - 60 meters (10 for test build), period every 10 minutes (5 seconds for test build).

As I understood it should track each 10 min only if you pass 60 meters. So if I passed 40 meters it shouldn't track it.

In the Usecase I wrote the following method with interval, smallestDisplacement but it doesn't work as I expected. Could you please help me with it?

@SuppressLint("MissingPermission")
fun saveLocation() {
    val locationRequest = LocationRequest().apply {
        interval = com.example.gpstracker.BuildConfig.TRACKING_INTERVAL_MILLIS
        fastestInterval = com.example.gpstracker.BuildConfig.TRACKING_INTERVAL_MILLIS
        smallestDisplacement = com.example.gpstracker.BuildConfig.TRACKING_INTERVAL_METERS.toFloat()
    }

    val locationCallback = object : LocationCallback() {
        override fun onLocationResult(locationResult: LocationResult) {
            locationResult.locations.let { locations ->
                val location = locations.last()
                saveLocationToFirebase(location.latitude, location.longitude)
            }
        }
    }
    fusedLocationClient.requestLocationUpdates(
        locationRequest,
        locationCallback,
        Looper.myLooper()
    )
}

Answer 1

Both of the parameters you are setting are minimums, so you will get a locationCallBack when either the minimum time or the minimum distance are passed.

I suggest that you just set the minimum time and every 10 minutes you will get a locationCallBack, where you can deal with the distance threshold yourself.

calculate the distance between this location and last location ( In Kotlin I would use distance = lastLocation.distanceTo(location) ) if it is greater than your threshold then process it set last location = this location for next time (In Kotlin this would be lastLocation.set(location) ) else do nothing