Recyclerview

Recyclerview with kotlin - Kotlin Android example

DTO

data class Subdata(val name: String, val imgurl: String) {}

ListItemsActivity.kt
class ListItemsActivity : AppCompatActivity() {
    lateinit var recyclerView: RecyclerView
    lateinit var listAdpter: ListAdpter
    internal var adapterlists = ArrayList<Subdata>()
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_list_items)
        //recycler        recyclerView = findViewById(R.id.recyclerView) as RecyclerView
        recyclerView.layoutManager = LinearLayoutManager(this)

        recyclerView.addOnItemTouchListener(RecyclerItemClickListener(this, recyclerView, object : RecyclerItemClickListener.OnItemClickListener {
            override fun onItemClick(view: View, position: Int) {
               
            }

            override fun onLongItemClick(view: View?, position: Int) {

            }
        }))
        
        listAdpter = ListAdpter(this@ListItemsActivity, adapterlists)
        recyclerView.adapter = listAdpter
}
}
ListAdpter.kt


class ListAdpter(internal var context: Context, internal var list: ArrayList<Subdata>) : RecyclerView.Adapter<ListAdpter.MyViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
        val itemView = LayoutInflater.from(parent.context)
                .inflate(R.layout.row_list_item, parent, false)
        return MyViewHolder(itemView)
    }
    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        val subdata : Subdata= list[position]
        holder.title.text = ""+subdata.name        if(!TextUtils.isEmpty(subdata.imgurl))
        {
            Picasso.with(context)
                    .load(subdata.imgurl)
                    .placeholder(R.drawable.bg)
                    .into(holder.img);
        }
        else        {
            holder.img.setImageResource(R.drawable.bg)
        }
    }
    inner class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        var title: TextView
        var img: ImageView
        init {
            title = itemView.findViewById(R.id.title) as TextView
            img = itemView.findViewById(R.id.img) as ImageView
            val face = Typeface.createFromAsset(context.assets, "font.otf")
            title.typeface = face

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