RecyclerView Adapter

CustomAdapter.kt

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView

class CustomAdapter : RecyclerView.Adapter<CustomAdapter.ViewHolder>() {

    private var list: MutableList<String> = mutableListOf()

    override fun onCreateViewHolder(viewGroup: ViewGroup, viewType: Int): ViewHolder {
        val view = LayoutInflater.from(viewGroup.context)
            .inflate(R.layout.item_model, viewGroup, false)
        return ViewHolder(view)
    }

    override fun onBindViewHolder(viewHolder: ViewHolder, position: Int) {
        viewHolder.textView.text = list[position]
    }

    override fun getItemCount() = list.size

    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val textView: TextView

        init {
            textView = itemView.findViewById(R.id.name)
        }
    }

    fun setList(list: MutableList<String>) {
        this.list = list
        notifyDataSetChanged()
    }

    fun clearList() {
        list = mutableListOf()
        notifyDataSetChanged()
    }
    
    fun addItem(item: String){
        list.add(item)
        notifyDataSetChanged()
    }

    fun removeItem(position: Int) {
        list.removeAt(position)
        notifyItemRemoved(position)
        notifyItemRangeChanged(position, itemCount)
    }

}