itemTouchHelperCallbackStep4.kt

   private val itemTouchHelper by lazy {
        val simpleItemTouchCallback = object : ItemTouchHelper.SimpleCallback(UP or DOWN or START or END, 0) {

            override fun onMove(recyclerView: RecyclerView,
                                viewHolder: RecyclerView.ViewHolder,
                                target: RecyclerView.ViewHolder): Boolean {
              
              //getting the adapter 
                val adapter = recyclerView.adapter as MoviesAdapter
              
              //the position from where item has been moved
                val from = viewHolder.adapterPosition
              
              //the position where the item is moved
                val to = target.adapterPosition
              
              //telling the adapter to move the item
                adapter.notifyItemMoved(from, to)

                return true
            }

            override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
            }

            override fun onSelectedChanged(viewHolder: RecyclerView.ViewHolder?, actionState: Int) {
                super.onSelectedChanged(viewHolder, actionState)

               
            }

            override fun clearView(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder) {
                super.clearView(recyclerView, viewHolder)

           
            }
        }

        ItemTouchHelper(simpleItemTouchCallback)
    }