gistfile1.txt

class ProductLoadingStateAdapter :
    LoadStateAdapter<ProductLoadingStateAdapter.LoadStateViewHolder>() {

    override fun onBindViewHolder(holder: LoadStateViewHolder, loadState: LoadState) {

        val progress = holder.itemView.progress_bar_item

        val txtErrorMessage = holder.itemView.error_msg_item
        

        if (loadState is LoadState.Loading) progress.visibility =
            View.VISIBLE; txtErrorMessage.visibility = View.GONE

        if (loadState is LoadState.Error) {
            txtErrorMessage.visibility = View.VISIBLE
            txtErrorMessage.text = loadState.error.localizedMessage
        }


    }

    override fun onCreateViewHolder(parent: ViewGroup, loadState: LoadState): LoadStateViewHolder {
        return LoadStateViewHolder(
            LayoutInflater.from(parent.context)
                .inflate(R.layout.network_state_item, parent, false)
        )
    }

    class LoadStateViewHolder(private val view: View) : RecyclerView.ViewHolder(view) {

    }
}