android.animation
Interfaces 
Animator.AnimatorListener
LayoutTransition.TransitionListener
TimeInterpolator
TypeEvaluator
ValueAnimator.AnimatorUpdateListener
Classes 
Animator
AnimatorInflater
AnimatorListenerAdapter
AnimatorSet
ArgbEvaluator
FloatEvaluator
IntEvaluator
Keyframe
LayoutTransition
ObjectAnimator
PropertyValuesHolder
ValueAnimator