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  1. #1
    Registered User
    Join Date
    Jun 2011
    Posts
    3

    Slow GPS with Qt on Symbian

    Hi,

    I have developed and published an app which uses GPS. While on Maemo5 and Harmattan, the GPS works just like with the official Maps apps, on Symbian there seems to be an issue with aGPS. I get lots of Bug reports that my app does not get a GPS fix or gets one very very slow. I myself have notived, that if I turn off the GSM/UMTS antenna, it indeed takes ages to get a fix while the official Maps app knows my position immediately even inside the house because of the available Wifi networks.

    Is there anything I can do to improve GPS performace on Symbian with Qt?

    This is the code I'm using on all platforms but performs poorly on symbian:

    Code:
        m_gps = QGeoPositionInfoSource::createDefaultSource(this);
        if (m_gps) {
            m_gps->setUpdateInterval(5000);
            connect(m_gps, SIGNAL(positionUpdated(const QGeoPositionInfo&)), this, SLOT(positionUpdated(const QGeoPositionInfo&)));
            m_gps->startUpdates();
        }

  2. #2
    Nokia Developer Champion
    Join Date
    Feb 2008
    Location
    Ahmedabad, Gujarat, India
    Posts
    3,852

    Re: Slow GPS with Qt on Symbian

    what generally i do is check for a fix with non satellite sources by calling requestUpdate method of QGeopositionInfoSource class, if i dont get an fix than i change the source to non-satellite, than again request for an update, than for sure you will get an update.

    This is not the best way but an workaround rather.

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