@Override
        void init() {
            // init config
            mDuration = ANIM_ENTER_DURATION;
            mInterpolator = new DecelerateInterpolator(2.4f);
        }
A animation post runnable {@link Runnable}
The class have animation status
caprice/ui/src/main/java/net/qiujuer/genius/ui/drawable/TouchEffectDrawable.java