How to highlight selected item in RecyclerView

Question

I have used RecyclerView for showing thumbnails in my Image Editing app.Each item of its comprises of a ImageView(thumbnail) and a textView.In my application I want to

Answer 1

If you don't want to use notifyDataSetChanged
Implemented by kotlin

 override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    adapterOrders = OrdersSendAdapter(this, listOrders)
    recyclerOrders = view.findViewById(R.id.recycler_orders)
    recyclerOrders.layoutManager = LinearLayoutManager(activity)
    recyclerOrders.setHasFixedSize(true)
    recyclerOrders.addItemDecoration(DividerItemDecoration(activity, DividerItemDecoration.VERTICAL))
    recyclerOrders.adapter = adapterOrders
  }

/* This method will be call when item of adapter has an event */
fun getListDetail(position: Int, idOrders: String) {
    for (index in 0 until recyclerOrders.childCount) {
         recyclerOrders[index].setBackgroundColor(Color.parseColor("#ffffff"))
    }
    recyclerOrders[position].setBackgroundColor(ContextCompat.getColor(context!!, R.color.color_select))
}