title: PointerIndex versus id in android
body: <p>I m referring to some websites like 
  <a href="http://developer.android.com/reference/android/view/MotionEvent.html" rel="nofollow">http://developer.android.com/reference/android/view/MotionEvent.html</a>
  <a href="http://www.vogella.com/tutorials/AndroidTouch/article.html" rel="nofollow">http://www.vogella.com/tutorials/AndroidTouch/article.html</a>
   to learn MotionEvent for designing User Interface.
  The problem is i am getting confused with terminologies like pointerIndex,Id ,getActionIndex, getActionMasked and other important methods related to MotionEvent.</p>