Opengl Ellipise sectors in android

How to make sectors in ellipse in android and I want to know which particular sector was touched? Weather it is possible to do in android opengl.

If by this you mean draw an ellipse in OpenGL ES, then yes this is possible. For an introduction to OpenGL ES programming, see the:

This is possible in Android as well, but tracking the current pointer position doesn’t involve OpenGL ES but rather other Android APIs.