Retrieve a GPS location by using a web page

Code sample: Retrieving a GPS location by using a web page

The following code sample demonstrates how to determine if a web page was loaded by the BlackBerry® Browser and if the BlackBerry device supports GPS functionality. If these conditions are true, the web page receives the updated location information to start location tracking.

<!DOCTYPE html PUBLIC
    "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    <head>
        <title>GPS Testing</title>
    </head>
    <body>
        <script type="text/javascript">
var modeCellsite   = 0;
var modeAssisted   = 1;
var modeAutonomous = 2;

function locationChanged()
{
    alert("Lat " + blackberry.location.latitude +
        " Lon " + blackberry.location.longitude +
        " Time " + blackberry.location.timestamp );
    return true;
}

if ( window.blackberry && blackberry.location.GPSSupported )
{
    var isUpdated = false;
    var theCount = 0;

    alert("Location tracking is supported");

    blackberry.location.onLocationUpdate("locationChanged()");
    blackberry.location.setAidMode(modeAutonomous);

    while ( theCount++ < 10 && !isUpdated )
        isUpdated = blackberry.location.refreshLocation();
}
else
{
    document.write("Location tracking is not supported");
}
        </script>
    </body>
</html>

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