瀑布流——小细节

` //这个地方是默认加上的，是默认分割线

    mRecy.setItemAnimator(new DefaultItemAnimator());`
    //随机一下图片高度

@Override
    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
        BeautyBean bean = mList.get(i);
        ViewGroup.LayoutParams params = viewHolder.itemView.getLayoutParams();
        Random random = new Random();
        int height = random.nextInt(300) + 300;
        params.height = height;
        viewHolder.itemView.setLayoutParams(params);
        viewHolder.mImage.setImageResource(bean.getImage());
    }