finding location on mobile device

[Mike for GDC]

I am trying to find my current lat/long on my android device.  I have played
around with multiple options including "mobileCurrentLocation" and others.
I have not been able to find an example of code that does it and works.
What I want to do is push a button, have the lat/long displayed so as I can
then "feed" it into a map widget for display.  Does anyone have an example
of code that does just that?  Thanks.  Mike