question: public static ViewPropertyAnimator animate ( View view ) { ViewPropertyAnimator animator = ANIMATORS . get ( view ) ; if ( animator == null ) { final int version = Integer . valueOf ( Build . VERSION . SDK ) ; if ( version >= Build . VERSION_CODES . ICE_CREAM_SANDWICH ) { animator = new ViewPropertyAnimatorICS ( view ) ; } else if ( version >= Build . VERSION_CODES . HONEYCOMB ) { animator = new ViewPropertyAnimatorHC ( view ) ; } else { animator = new ViewPropertyAnimatorPreHC ( view ) ; } ANIMATORS . put ( view , animator ) ; } return animator ; }
target:  This method returns a ViewPropertyAnimator object, which can be used to animate specific properties on this View.