How to get number of satellites used in gps in android?

Question

I have written like this. But i am getting 0 always.Please correct me where i am wrong.

public int getSatellites() { 

    GpsStatus gpsStatus = locationManager.getGpsStatus(null);
     int count=0;
     if(gpsStatus != null) {
         Iterable<GpsSatellite>satellites = gpsStatus.getSatellites();
         Iterator<GpsSatellite>sat = satellites.iterator();

         int i=0;

         while (sat.hasNext()) {
            count++;
             GpsSatellite satellite = sat.next();
             strGpsStats+= (i++) + ": " + satellite.getPrn() + "," + satellite.usedInFix() + "," 
             + satellite.getSnr() + "," + satellite.getAzimuth() + "," + satellite.getElevation()+ "\n\n";
             Log.v("value:"+"-", strGpsStats+= (i++) + ": " + satellite.getPrn() + "," + satellite.usedInFix() + "," 
                     + satellite.getSnr() + "," + satellite.getAzimuth() + "," + satellite.getElevation()+ "\n\n");
         }
         //tv.setText(strGpsStats);
         Log.v("satellite", "satellite " +count);
     }

    return count;       
 }

ANd in the main activity class i have called it like this

  int satellites=gps.getSatellites();

Answer 1

A couple of things that could cause you problems:

• You have to have requested the ACCESS_COARSE_LOCATION permission.
• Your device must have the GPS location service enabled.
• The GPS satellites must be "visible".
• The GPS hardware takes some period of time before acquiring the satellites. The usual way is to wait until the system tells you that something has changed by using a GpsStatus.Listener and waiting for the onGpsStatusChanged event.