RecyclerViewDividerExtension.kt

fun RecyclerView.divider(orientation: Int = DividerItemDecoration.VERTICAL,
                         @DrawableRes drawable : Int = R.drawable.list_divider) {
    val itemDecoration = DividerItemDecoration(context, orientation).apply {
        ContextCompat.getDrawable(context, drawable)?.let {
            setDrawable(it)
        }
    }
    addItemDecoration(itemDecoration)
}