How to calculate rotation of Android phone relative to phone

How to calculate rotation of Android phone relative to phone

References

Reference NO 1

http://stackoverflow.com/questions/13657807/how-to-calculate-rotation-of-android-phone-relative-to-phone

Reference NO 2

http://stackoverflow.com/questions/17418599/how-to-use-sensoreventlistener-to-determine-direction-phone-is-facing-relative-t

Reference NO 3

http://developer.android.com/guide/topics/sensors/sensors_position.html

Reference NO 4

http://developer.android.com/guide/topics/sensors/sensors_overview.html

Reference NO 5

http://www.openfl.org/developer/forums/bugs/device-orientation-android-accelerometer/

Reference NO 6

http://forum.unity3d.com/threads/101279-GyroDroid-2-0-Access-each-and-every-sensor-on-Android-devices-RELASED

Reference NO 7

http://apcmag.com/working-with-layouts-and-orientation-changes.htm

Reference NO 8

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