Put pdf files which I download from Firebase Cloud Storage to recyclerview using Kotlin

Question

I have prepared recyclerview to show pdf files but when I try some functions to put pdfs into recyclerview they didin't show. Is any function to do this?

This is my adapter and here probably all is well

class AdapterKarty(private val fileList: ArrayList<plik>): RecyclerView.Adapter<AdapterKarty.ViewHolder>(){



    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AdapterKarty.ViewHolder {
        val a = LayoutInflater.from(parent.context).inflate(R.layout.karta_pliku,parent, false)
        return ViewHolder(a);


    }

    override fun onBindViewHolder(holder: AdapterKarty.ViewHolder, position: Int) {


           var item = fileList[position]

            holder.dokument.text = item.Name

    }

    override fun getItemCount(): Int {
        return fileList.size
    }


    inner class ViewHolder(itemView: View): RecyclerView.ViewHolder(itemView){

        var dokument: TextView = itemView.tv_dokment
    }
}

In list I use class plik where i declare only name because here i try put name of pdf

class plik( var Name: String?=null){

}

And here I have my main class where I try put those files to recyclerview

class Dokumenty : AppCompatActivity() {


    private  var stor: FirebaseStorage?=null

    private var storageReference = stor?.reference

    lateinit var recyclerView: RecyclerView
    private lateinit var listaPlikow : ArrayList<plik>
    private lateinit var myAdapter: AdapterKarty

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_dokumenty)

        stor = FirebaseStorage.getInstance()





        recyclerView = findViewById(R.id.recyclerView)


        recyclerView.layoutManager = LinearLayoutManager(this)
        recyclerView.setHasFixedSize(true)

        listaPlikow = arrayListOf()

        myAdapter = AdapterKarty(listaPlikow)

        getFiles()

    }





    private fun getFiles() {

        var pliki = storageReference?.child("Pliki/")



    }







}