Problems with GPS signal/slot

Hello

I try to get GPS information for my application. I did a class to do so.

#ifndef GPSHANDLER_H_
#define GPSHANDLER_H_

#include 

#include 

#include 
#include 
#include 

using namespace QtMobilitySubset;

class GPShandler : public QObject{
    Q_OBJECT
public:
    GPShandler(QObject* parent);
    virtual ~GPShandler();
private Q_SLOTS:
    void positionUpdatedSlot(const QGeoPositionInfo &geoInfo);

public:
    void start();

    void stop();

    double Latitude();

    double Longitude();

private:
    double mGeoInfoLat;
    double mGeoInfoLong;
    QGeoPositionInfoSource *mGeo;
};
#endif /* GPSHANDLER_H_ */

#include "GPShandler.h"

GPShandler::GPShandler(QObject* parent)
: QObject(parent) {
    mGeoInfoLat = 0;
    mGeoInfoLong = 0;
    mGeo = QGeoPositionInfoSource::createDefaultSource(this);
    if (mGeo) {
        bool checkval = connect(mGeo, SIGNAL(positionUpdated(const QGeoPositionInfo &)), this,
                SLOT(positionUpdatedSlot(const QGeoPositionInfo &)));

        mGeo->setPreferredPositioningMethods(QGeoPositionInfoSource::SatellitePositioningMethods);
        mGeo->setUpdateInterval(1000);

        //checkval = mGeo->setProperty("backgroundMode", true);
        //int i = 3;
    }
}

GPShandler::~GPShandler() {
    // TODO Auto-generated destructor stub
}

void GPShandler::positionUpdatedSlot(const QGeoPositionInfo &geoInfo) {
    // Here's where you can do something with the device's position
    mGeoInfoLat = geoInfo.coordinate().latitude();
    mGeoInfoLong = geoInfo.coordinate().longitude();
}

void GPShandler::start()
{
    mGeo->startUpdates();
}

void GPShandler::stop()
{
    mGeo->stopUpdates();
}

double GPShandler::Latitude()
{
    return mGeoInfoLat;
}

double GPShandler::Longitude()
{
    return mGeoInfoLong;
}

As you can see I have connected the signal postionUpdate() of QGeo class that I use for the positionUpdatedSlot() of the slot. I use the class as follows:

Pop = new GPShandler (this);

void::startTimer() {} App

Pop-> start();

}
void::stopTimer() {} App

Pop-> stop();

}

which are called when a key is pressed. However, the positionUpdatedSlot() of slot function is never called. I have debugged in my code and cannot find the problem. I can confirm the work of connection (function returns true), and that presented startup and shutdown functions are called as expected. Is there a reason why my slot machine function is not called?

Note: I have another implementation of signal/slot in this app:

Connect (mTimer, SIGNAL (timeout ()), this, SLOT (update ()));

and it works very well.

Thank you

Gerry

I do not know which of the following has solved my problem, but in any case, it's working now after doing these things:

1. give permission to app to device identification information. (I had already given GPS, but examples also being device identifying information I thought I'd try that)

2. remove the line:

       mGeo>setPreferredPositioningMethods(QGeoPositionInfoSource::SatellitePositioningMethods);

as an example, I created using this example: http://blackberry.github.com/Cascades-Samples/geo-locationdiagnostics.html did not have this line

Tags: BlackBerry Developers

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