handleTPV received twice

[Gianmariai]

Hello,
I'm sure im not subscribing listrner 2 times, cause all passes in singleton but i continue to receive tpv twice with same data.

PLease Help.

[0x08]

Maybe you could provide a bit more input or a code snippet? Very hard for anybody to help you like this.

[Gianmariai]

Sure.. my class is so simple:

`public class LocationManager {

private static LocationManager _instance;
public static String ON_GPS_POINT = "ON_GPS_POINT";

int currentSatsInView = 0;
int currentHDOP = 0;
int currentBearing = 0;
double lastDateTimeTrasmitted = 0.0;

public static LocationManager getInstance(){
    if(_instance == null)
        _instance = new LocationManager();
    return _instance;
}

private LocationManager(){

    try {

        GPSdEndpoint gpsd = new GPSdEndpoint("localhost", 2947, new ResultParser());
        gpsd.addListener(listener);
        gpsd.start();
        gpsd.watch(true, true);
        System.out.println("GPSD:Started");

    } catch (Exception ex) {
         System.out.println(ex.getMessage());
    }
}

ObjectListener listener = new ObjectListener(){
    
@Override
    public void handleTPV(TPVObject tpv) {

    //Fix same point received multiple times..
        if(tpv.getTimestamp() == lastDataTimeTrasmitted){
            return;
        }
        lastDataTimeTrasmitted = tpv.getTimestamp();


        if((tpv.getMode() == ENMEAMode.NoFix) || (tpv.getMode() == ENMEAMode.NotSeen)){
            return;
        } else {

	System.out.println("Lat:" + tpv.getLatitude());
	System.out.println("Lat:" + tpv.getLongitude());
	DateFormat dateFormat = new SimpleDateFormat("yyyy-mm-dd hh:mm:ss");  
            String strDate = dateFormat.format(new Date((long)tpv.getTimestamp() * 1000L));  
	System.out.println("Time:" + strDate); 
        }
    }

    @Override
    public void handleSKY(SKYObject sky) {
        currentSatsInView =  sky.getSatellites().size();
        currentHDOP = (int)sky.getHorizontalDOP();
        System.out.println("DOP:" + currentHDOP);
        System.out.println("SAT:" + currentSatsInView);
    }

    @Override
    public void handleATT(ATTObject att) {
        currentBearing = (int)att.getHeading();
        System.out.println(Direction(deg):" + currentBearing);
    }
};

}`

Thank you for your help.
Gianmaria

[hoegertn]

First thing that comes to my mind is: Does the hardware/gpsd start in watch mode? So what happens if you do not call watch()?

[Gianmariai]

Good Morning. I Tried. No events were generated all if I remove call to watch.
No events also if i call it with watch(true, false) or watch(false,true).

Also i noted that the more events I subscribe, the more same result were produced. I fixed temporary with this weird code:

if(tpv.getTimestamp() == lastDataTimeTrasmitted){ return; }
but I dont like it..

regards
Gianmaria
Italy