class MyAdapter(private val myDataset: Array) : RecyclerView.Adapter() { // Provide a reference to the views for each data item // Complex data items may need more than one view per item, and // you provide access to all the views for a data item in a view holder. // Each data item is just a string in this case that is shown in a TextView. class MyViewHolder(val textView: TextView) : RecyclerView.ViewHolder(textView) // Create new views (invoked by the layout manager) override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyAdapter.MyViewHolder { // create a new view val textView = LayoutInflater.from(parent.context) .inflate(R.layout.my_text_view, parent, false) as TextView // set the view's size, margins, paddings and layout parameters ... return MyViewHolder(textView) } // Replace the contents of a view (invoked by the layout manager) override fun onBindViewHolder(holder: MyViewHolder, position: Int) { // - get element from your dataset at this position // - replace the contents of the view with that element holder.textView.text = myDataset[position] } // Return the size of your dataset (invoked by the layout manager) override fun getItemCount() = myDataset.size }