I'm not 100% sure if I got your question right. But you want to convert the location you get into WGS84 coordinatesm right? I'll guess you get your position via the Android LocationManager using something like: LocationManager.getLastPosition()
. What you get is a Location . This location can be formated in different ways.
The questions is what exactly do you want? WGS84 is a reference system and does not say anything about the way coordinates are represented. A common representation are sphereical coordinates (also called Lat/Lon coordinates): Spherical Coordinates.
Another representation would be Cartesian coordinates. Maybe thats what you are looking for. To get cartesian coordinates you should use a 3rd party library.