geolocation - How to find device co-ordinates with respect some point (which is calculated by the device itself) in android 4.4? -

i have followed below questions in both acceleration , location finding reference true north. results not @ accurate device location. tell me how enable type_gravity sensor also?

calculate acceleration in reference true north

convert magnetic field x, y, z values device global reference frame

basically want know device location(co-ordinates) respect known location.