一文搞懂Android RecyclerView点击展开、折叠效果的实现代码

//默认是关闭
 private boolean isOpen = false;
 
 public boolean isOpen() {
        return isOpen;
    }

    public void setOpen(boolean open) {
        isOpen = open;
    }

 if (isOpen) {
            mRecyclerView.setVisibility(View.VISIBLE);
            linearLayout.setVisibility(View.VISIBLE);
            view.setBackgroundResource(R.mipmap.icon_more_than_open);
        } else {
            mRecyclerView.setVisibility(View.GONE);
            linearLayout.setVisibility(View.GONE);
            view.setBackgroundResource(R.mipmap.icon_more_than);
        }

 mAdapter.setOnItemClickListener((adapter, view, position) -> {
            if (mAdapter.isOpen()) {
                mAdapter.setOpen(false);
            } else {
                mAdapter.setOpen(true);
            }
            //这个是渲染数据后 刷新 不然看不到数据
            mAdapter.notifyDataSetChanged();
        });

android:layout_width="match_parent"
  android:layout_height="wrap_content"