RecyclerView Adapter

CustomAdapter.kt

class CustomAdapter(private val dataSet: Array<String>) : RecyclerView.Adapter<CustomAdapter.ViewHolder>() {
    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
        val textView: TextView
        init {
            textView = view.findViewById(R.id.textView)
        }
    }
    override fun onCreateViewHolder(viewGroup: ViewGroup, viewType: Int): ViewHolder {
        val view = LayoutInflater.from(viewGroup.context)
                .inflate(R.layout.text_row_item, viewGroup, false)
        return ViewHolder(view)
    }
    override fun onBindViewHolder(viewHolder: ViewHolder, position: Int) {
        viewHolder.textView.text = dataSet[position]
    }
    override fun getItemCount() = dataSet.size
}