Problem in getting GPS Position

[ajayzone]

Hi,

i am having a problem with getting GPS position My Code is as Below,
i am able to get into the If(locationDataSource)
{
}
Some Times i get the Location But some times it just dose not respond
How can i throw an error when locationDataSource->startUpdates(); is not responding.

Thanks,

@void MyThread::run()
{

// call initialisation of GPS


 startGPS();

 this->exec();

}

void MyThread::startGPS()
{
// Obtain the location data source if it is not obtained already
if (!locationDataSource)
{
locationDataSource = QGeoPositionInfoSource::createDefaultSource(this);

    ReturnResult="In function StartGPS";
    emit GotGPSPositions(ReturnResult);
    
    if (locationDataSource)
    {
        // Whenever the location data source signals that the current
        // position is updated, the positionUpdated function is called
        ReturnResult="Got Location Datasource";
        emit GotGPSPositions(ReturnResult);
        connect(locationDataSource, SIGNAL(positionUpdated(QGeoPositionInfo)),
                      this, SLOT(positionUpdated(QGeoPositionInfo)),Qt::DirectConnection);

        // Start listening for position updates
        locationDataSource->startUpdates();
    }
    
    else
    {
        ReturnResult="Unable to get GPS location";
        emit GotGPSPositions(ReturnResult);
        exit(0);
    }
}
else
{
    // Start listening for position updates
    locationDataSource->startUpdates();
}

}

void MyThread::positionUpdated(QGeoPositionInfo geoPositionInfo)
{
ReturnResult="In Position Update";
emit GotGPSPositions(ReturnResult);

if (geoPositionInfo.isValid())
{        
    // We've got the position. No need to continue the listening.
    locationDataSource->stopUpdates();
    ReturnResult="Position Got";
    emit GotGPSPositions(ReturnResult);

    // Save the position information into a member variable
    myPositionInfo = geoPositionInfo;

    // Get the current location as latitude and longitude
    QGeoCoordinate geoCoordinate = geoPositionInfo.coordinate();
    qreal latitude = geoCoordinate.latitude();
    qreal longitude = geoCoordinate.longitude();        
    ReturnResult=QString("%1::%2").arg(latitude).arg(longitude);
    GPSLocation=QString("%1::%2").arg(latitude).arg(longitude);
    emit GotGPSPositions(ReturnResult);
    Test();
}
else
{
     ReturnResult="GPS Position is not valid.";
     emit GotGPSPositions(ReturnResult);
     this->exit(0);
}

}
@