How to get information about the satellites from android?

Question

I am trying to get the satellite information from the android and wrote this following code which is not giving any results, could any one point out why is it so?

Answer 1

GpsStatus.Listener is deprecated. You should use LocationListener and GnssStatus.Callback instead. Here following code:

import android.content.Context.LOCATION_SERVICE
import android.content.pm.PackageManager
import android.location.GnssStatus
import android.location.Location
import android.location.LocationListener
import android.location.LocationManager
...

class YourFragment : LocationListener {
    
    private var mGnssStatusCallback : GnssStatus.Callback? = null
    private lateinit var mLocationManager: LocationManager

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        mLocationManager = requireActivity().getSystemService(LOCATION_SERVICE) as LocationManager

        mGnssStatusCallback = object : GnssStatus.Callback() {
            override fun onStarted() {
                Log.e(TAG, "GnssStatus.Callback onStarted")
                super.onStarted()
            }

            override fun onSatelliteStatusChanged(status: GnssStatus?) {
                Log.e(TAG, "GnssStatus.Callback Status: ${status?.toString()}")
                super.onSatelliteStatusChanged(status)
            }

            override fun onStopped() {
                Log.e(TAG, "GnssStatus.Callback onStopped")
                super.onStopped()
            }

            override fun onFirstFix(ttffMillis: Int) {
                Log.e(TAG, "GnssStatus.Callback onFirstFix $ttffMillis")
                super.onFirstFix(ttffMillis)
            }
        }

        if (ActivityCompat.checkSelfPermission(
                requireContext(),
                Manifest.permission.ACCESS_FINE_LOCATION
            ) != PackageManager.PERMISSION_GRANTED
        ) {
            return
        }

        mGnssStatusCallback?.let {
            mLocationManager.registerGnssStatusCallback(it)
            mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 30000, 0F, this)
        }

    }

    override fun onDestroyView() {
        mLocationManager.removeUpdates(this)
        mGnssStatusCallback?.let {
            mLocationManager.unregisterGnssStatusCallback(it)
        }

        super.onDestroyView()
    }

    override fun onLocationChanged(location: Location?) {
        Log.e(TAG, "onLocationChanged new Location: ${location.toString()}")
    }

    override fun onStatusChanged(p0: String?, p1: Int, p2: Bundle?) {
        Log.e(TAG, "onStatusChanged p0 ${p0 ?: "null"} - p1 ${p1}")
    }

    override fun onProviderEnabled(p0: String?) {
        Log.e(TAG, "onProviderEnabled p0 ${p0 ?: "null"}")
    }

    override fun onProviderDisabled(p0: String?) {
        Log.e(TAG, "onProviderDisabled p0 ${p0 ?: "null"}")
    }

}

Note: I have observed that the GnssCallback may arrive in some minutes after you request for Location update.