AnimationUtils.java 文件源码

public static void animateSunblind(RecyclerView.ViewHolder holder, boolean goesDown) {
    int holderHeight = holder.itemView.getHeight();
    holder.itemView.setPivotY(goesDown == true ? 0 : holderHeight);
    holder.itemView.setPivotX(holder.itemView.getHeight());
    AnimatorSet animatorSet = new AnimatorSet();
    ObjectAnimator animatorTranslateY = ObjectAnimator.ofFloat(holder.itemView, "translationY", goesDown == true ? 300 : -300, 0);
    ObjectAnimator animatorRotation = ObjectAnimator.ofFloat(holder.itemView, "rotationX", goesDown == true ? -90f : 90, 0f);
    ObjectAnimator animatorScaleX = ObjectAnimator.ofFloat(holder.itemView, "scaleX", 0.5f, 1f);
    animatorSet.playTogether(animatorTranslateY, animatorRotation, animatorScaleX);
    animatorSet.setInterpolator(new DecelerateInterpolator(1.1f));
    animatorSet.setDuration(1000);
    animatorSet.start();
}