Geofencing documentation, tutorials or examples?

[Craig Lang]

Hi All,

I'm looking for documentation on how to use GeoFencing.
I saw references to it in the CodeNameOne Blog, but I haven't seen anything on how to actually use it.
I didn't see anything in the developer guide, and a google search turned up nothing that would instruct on how to use it.

I saw the GeoFenceListener class and associated methods in the LocationManager class listed in the JavaDocs
I've started to play with this, but I doubt I'm using it correctly. Haven't gotten it to actually work yet using the simulator.
Is there an example of an application using GeoFencing?

Thanx,
 Craig

[Steve CN1 Hannah]

Here is a simple example of using the GeofenceListener

https://gist.github.com/shannah/396cf6083785327adb62

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Steve Hannah

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Codename One

http://www.codenameone.com

[Craig Lang]

Thank you,
That helps quite a bit.

A couple of things that have me a little puzzled:
1) Unfortunately, for some reason, the listener is not being triggered. I never see the System.out.println output that would indicate that the onExit and onEnter are being called.
2) I noticed that when I used the @Override lines in the GeofenceListener class, the compiler complained.


Here is the code I used to implement the class so far. It should be the same thing as in the example, except that the @Override line isn't there.

Here is the GeofenceListener class
-----------------------------------------------
package userclasses;

import com.codename1.location.GeofenceListener;

public class GFListener implements GeofenceListener
{
    public void onExit(String id)
    {
        System.out.println("Exited "+id);
    }

    public void onEntered(String id)
    {
        System.out.println("Entered "+id);
    }
}


And here is the code that launches it:

    LocationManager lmg;
    void setBackgroundGPS()
    {
        lmg  = LocationManager.getLocationManager();
        Location baseLoc = getBaseLocation();
        System.out.println("Setting background location");
        System.out.println("Base location: " + baseLoc.getLatitude() + "/" + baseLoc.getLongitude());
        Geofence gf = new Geofence("GFTest", baseLoc, 500, 100000);
        lmg.addGeoFencing(GFListener.class, gf);
    }

    void clearBackgroundGPS()
    {
        if (lm != null )
        {
            lmg.removeGeoFencing("GFTest");
        }
    }
The resulting output on the console is:
Setting background location
Base location: 45.13945157305696/-93.27427055306242

So it appears that the correct latitude/longitude are being generated.
Not sure what I'm doing wrong. Any insights would be helpful.

Thanx,
 Craig

[Craig Lang]

Also, how well does this work with the simulator?
I'm testing the geofencing using the simulator.

[Steve Hannah]

This hasn't been added to the simulator yet.  It is only on Android and iOS presently.  Please file an RFE in the issue tracker.

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Steve Hannah

Web Lite Solutions Corp.