question: public void addAnimation ( int id , Animation ... animations ) { if ( mAnimations . get ( id ) == null ) { mAnimations . put ( id , new ArrayList < Animation > ( animations . length ) ) ; if ( id != Animation . FULL_PAGE ) { mAnimatedViews . add ( id ) ; } } ArrayList < Animation > anims = mAnimations . get ( id ) ; Collections . addAll ( anims , animations ) ; }
target:  Add animations to the target View. The View's id is used as key.