RecyclerView嵌套RecyclerView多Type布

下面是我要实现的业务功能，当然核心就是需要RecyclerView嵌套RecyclerView

device-2021-12-16-151435.png

总结
1、借助了github BaseRecyclerViewAdapterHelper第三方库适配器
2、新增跟删除子item中的数据时候，可以使用先填充数据，然后局部刷新。或者使用全局刷新
3、给某个子项加红色框框

private fun addRedBg(secondPos: Int) {
        Observable.create<Long> {
            moveToPosition(recyclerView.layoutManager as LinearLayoutManager, secondPos)
            it.onNext(1)
        }
            .subscribeOn(AndroidSchedulers.mainThread())
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(object : io.reactivex.Observer<Long> {

                override fun onSubscribe(p0: Disposable) {

                }

                override fun onNext(p0: Long) {
                    //给二级分类的最后一项加上红色框框
                    var viewHolder = recyclerView.findViewHolderForAdapterPosition(secondPos)
                    var rv = viewHolder?.itemView?.findViewById<RecyclerView>(R.id.rv)
                    val childAdapter = rv?.adapter as BaseQuickAdapter<PhotoItem, BaseViewHolder>
                    val lastPos = childAdapter?.data.size - 1
                    var childViewHolder = rv?.findViewHolderForAdapterPosition(lastPos)
                    val warnIv = childViewHolder?.itemView?.findViewById<ImageView>(R.id.warn_iv)
                    warnIv?.visibility = View.VISIBLE
                }

                override fun onError(p0: Throwable) {
                }

                override fun onComplete() {
                }

            })

    }

    private fun moveToPosition(manager: LinearLayoutManager, pos: Int) {
        manager.scrollToPositionWithOffset(pos, 0);
        manager.setStackFromEnd(true);
    }