question: private boolean isTouchInsideList ( MotionEvent ev ) { float x = ev . getX ( ) - mListView . getX ( ) ; float y = ev . getY ( ) - mListView . getY ( ) ; if ( x < 0 || x > mListView . getWidth ( ) || y < 0 || y > mListView . getHeight ( ) ) { return false ; } return true ; }
target:  Checks whether a touch event is inside of the bounds of the mode list.