屏幕旋转后我无法恢复 RecyclerView 状态

在 stackoverflow ( link ) 上找到了一种保存 RecyclerView 状态的方法。保存发生，但屏幕旋转后没有恢复。

在gif的最后可以看到，在旋转之后，我调用了数据加载方法，调用了RecyclerView方法来更新列表。如果我不这样做，我会得到一个白屏。

以前，我做的不一样。保存数组和滚动位置。

class BookmarkActivity : AppCompatActivity(), ViewBookmark{

    private lateinit var viewAdapter: RecyclerView.Adapter<RecyclerView.ViewHolder>
    private lateinit var viewManager: RecyclerView.LayoutManager
    private lateinit var recyclerView: RecyclerView

    private val presenter : PresenterBookmark
    private val arrayList: ArrayList<BookmarkList>

    private lateinit var progressBar : ProgressBar



    companion object {
        val TAG = "BookmarkActivity"
        val LIST_STATE_KEY = "bookmark_list"
    }
    init {
        arrayList = ArrayList()
        presenter = PresenterImpl(this)
    }

    override fun onCreate(@Nullable savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_bookmark)

        progressBar = findViewById(R.id.progressBarBookmark)
        recyclerView = findViewById<RecyclerView>(R.id.rv_bookmark)
        viewManager = LinearLayoutManager(this)
        viewAdapter = BookmarkAdapter(this)

        recyclerView.apply {
            layoutManager = viewManager
            adapter = viewAdapter
        }

        if(savedInstanceState == null){
            presenter.getData()
            removeList()
        }

    }


    override fun getRepositoriesRowsCount(): Int = presenter.getSizeData()

    override fun currentListPosition(position: Int): Int = presenter.setCurrentListPosition(position) 

    override fun getItemViewHolder(rowView: ItemViewHolder, position: Int) = presenter.setItemViewHolder(rowView, position)

    override fun progressBarGone() {
        progressBar.visibility = View.GONE
    }

    override fun removeList() {
        recyclerView.adapter.notifyDataSetChanged()
    }

    override fun stopScroll() {
        recyclerView.stopScroll()
    }



    public override fun onSaveInstanceState(outState: Bundle?) {
        super.onSaveInstanceState(outState)
        Log.d("onSaveInstanceState", "Save -----")
        outState!!.putParcelable(LIST_STATE_KEY, recyclerView.getLayoutManager().onSaveInstanceState());
    }

    override fun onRestoreInstanceState(savedInstanceState: Bundle?) {
        super.onRestoreInstanceState(savedInstanceState)

        if (savedInstanceState != null) {
            Log.d("onRestoreInstanceState", "Restore YES-----")
            val savedRecyclerLayoutState : Parcelable = savedInstanceState.getParcelable(LIST_STATE_KEY)
            recyclerView.layoutManager.onRestoreInstanceState(savedRecyclerLayoutState)

            progressBarGone()
            presenter.getData() // ЗАГРУЖАЮ ДАННЫЕ СНОВА
            removeList() //ВЫЗЫВАЮ   recyclerView.adapter.notifyDataSetChanged()
        }
    }

}