Angle between two known android geolocations

Question

I want to find an angle between two known geolocations.Basically what I want is, I want to direct an arrow whose tail point is at my current location and arrow head is point

Answer 1

I'm not sure that I understand what you want to do, but check this: Android Reference, Location, distanceBetween(double startLatitude, double startLongitude, double endLatitude, double endLongitude, float[] results)

results parameter should be array of floats - at least 2 elements. Then in results[0] you will find distance and in results1 bearing between this two points. What is important "Distance and bearing are defined using the WGS84 ellipsoid."