adapter_item_width.kotlin

 override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val holder = ViewHolder(
            LayoutInflater.from(parent.context)
                .inflate(R.layout.list_item_appointment, parent, false)
        )

        if (!itemWidthMatchParent && items.size > 1) {
            val params = holder.itemView.layoutParams
            params.width =
                parent.measuredWidth - (4 * parent.context.resources.getDimensionPixelSize(R.dimen.margin_10))
            holder.itemView.layoutParams = params
        }

        return holder
    }