Kuras funkcijas ir jāpārdefinē Adapter klasē, lai tas pareizi darbotos ar RecyclerView?

Lai adapteris pareizi darbotos ar RecyclerView, ir jāpārraksta šīs metodes:

1. onCreateViewHolder(ViewGroup parent, int viewType) — izveido jaunu ViewHolder un inicializē saraksta elementa izkārtojumu.
2. onBindViewHolder(ViewHolder holder, int position) — sasaista datus ar saraksta elementu un atjauno ViewHolder saturu.
3. getItemCount() — atgriež elementu skaitu adapterī.

Kotlin piemērs:

class MyAdapter(private val items: List<String>) : RecyclerView.Adapter<MyAdapter.MyViewHolder>() {

    class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val textView: TextView = itemView.findViewById(R.id.textView)
    }

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

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        holder.textView.text = items[position]
    }

    override fun getItemCount(): Int = items.size
}