Continuing Location discovery

[kevin....@gmail.com]

Hi everyone,

I am developing an application which makes use of the location abilities of the mobile platform in conjunction with Google's places directory.  When I query the places API for local places, I get a response which includes everything I'm interested in, including the location (geometric) information.  I then create a PointLayer and insert Points for each of the items in the response.  I then add the points layer to the map that is being displayed, which map icons for each location.  A typical addition might be for something like this:

[Network Thread] 0:0:4,248 - Adding new point-of-interest: 40.719819 -74.008383 Bubby's

However, when I then click on an icon in the map for this location, the location data is not correct: 

[EDT] 0:0:9,964 - pressed {'longitude':-8238575.508846745, 'latitude':4971102.4549792465} Bubby's

As you can see, the latitude and longitude for this location have changed.  I have debugged this to the point of seeing that the points I add have the correct location data, but in inspecting the PointsLayer, all of the values are incorrect.

Anyone else seeing this type of behavior?

Thanks.

[Chen Fishbein]

The coordinates are being project to be be able to show on the map.

If you want the original coordinates you will need to transform it back.

PointsLayer pl;

point = pl.getProjection().toWGS84(point);

                            

[kevin....@gmail.com]

Thanks Chen, I will check it out.  So now my follow-up question:  Can I call a navigation app from this data?  And if so, how does one do that, say for instance if I wanted to bring up the Google Maps navigation app?

Thanks for the speedy reply.

[Kevin Penrose]

Okay - I must be missing something - when I click on the map point, I get a callback to my ActionListener, and I get the PointLayer from the event:

                pl.addActionListener(new ActionListener() {

                    public void actionPerformed(ActionEvent evt) {

                        PointLayer pl = (PointLayer) evt.getSource();

                        Log.p("pressed " + pl);

//                        System.out.println("pressed " + pl.getLatitude() + " " + pl.getLongitude() + " " + pl.getName());

                        Dialog.show("Details", "" + pl.getName(), "Ok", null);

                    }

                });

I'm not sure where in that code I should be doing the un-projection to which you refer.  I don't know if I have a reference to the PointsLayer that I need to get the projection, and how I get the point you refer to (which I guess would be a Coord or PointLayer?).  

Thanks again.

[kevin....@gmail.com]

Nevermind - I figured it out - You get a Coord back from the translation, I was looking for a PointLayer.