question: public void animateProgressFill ( int animateTo ) { mAnimationHandler . removeMessages ( 0 ) ; if ( animateTo > mMax || animateTo < 0 ) { throw new IllegalArgumentException ( String . format ( "Animation progress (%d) is greater than the max progress (%d) or lower than 0 " , animateTo , mMax ) ) ; } mAnimationHandler . setAnimateTo ( animateTo ) ; mAnimationHandler . sendEmptyMessage ( 0 ) ; invalidate ( ) ; }
target:  Animates a progress fill of the view, using a Handler.