how to start make app like clinometer in android

Question

i want to get and move needle on co-ordinates as per user rotates or move device as compass does also as this app is doing already.you can see what i want to say on this link https://play.google.com/store/apps/details?id=com.plaincode.clinometer&hl=en but now at this time i am not able to understand on this context. i am unable to find hint for how to start..is their is any api to get and make it work or need to implement accelerometer on a very extensive level to get it done. please guide me if u have any code or link regarding this..thank in advance

Answer 1

I was looking for this solution more than a year ago and for that somehow i managed to do this similar this way. and source for that which i managed to do is -- link to source