Question

I’m trying to get user position in Sencha Touch 2:

var geo = new Ext.util.Geolocation({
        autoUpdate: true,
        allowHighAccuracy: true,
        listeners: {
            locationupdate: function(geo) {
                lat = geo.getLatitude();
                lon = geo.getLongitude();

                // here comes processing the coordinates   
            }
        }
    });

But I’ve got coordinates only from network. There’s no GPS icon on Android device, pointing that I’m using GPS. Also it doesn’t work when I turn off internet connection. How can I enable GPS positioning? In Manifest file GPS is enabled.

Answer 1

I just got bit by this too.

It turns out there’s a bug in Sencha: in Ext.util.Geolocation.parseOption they name the parameter allowHighAccuracy but the w3c specs name it enableHighAccuracy.
I added the following code to my application init to fix that:

var parseOptions = function() {
    var timeout = this.getTimeout(),
        ret = {
            maximumAge: this.getMaximumAge(),
            // Originally spells *allowHighAccurancy*
            enableHighAccuracy: this.getAllowHighAccuracy()
        };

    //Google doesn't like Infinity
    if (timeout !== Infinity) {
        ret.timeout = timeout;
    }
    return ret;
};
Ext.util.Geolocation.override('parseOptions', parseOptions);

For the record: the bug has been reported over a year ago, and the fix was applied for TOUCH-2804 in a recent build. I don’t know what that means, but sure enough the bug is still in 2.0

EDIT: using the approach mentioned above doesn’t work well either. The GPS icon would turn on and off as Exts calls getCurrentPosition repeatedly using a setInterval. The reason for doing this is that The native watchPosition method is currently broken in iOS5. In my Android targeted application I ended up ditching Ext:util.Geolocation and directely used navigator.geolocation.watchPosition. After that it worked like a charm.