RecyclerView itemClickListener in Kotlin [closed]

Answer 1

My simple solution using higher-order function and let scoping function to set listener only if itemAction has been set

// Adapter
private var itemAction: ((Item) -> Unit)? = null

fun setItemAction(action: (Item) -> Unit) {
    this.itemAction = action
}

inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
    fun setItem(item: Item) {

        // ...

        itemAction?.let {
            itemView.setOnClickListener { it(item) }
        }
    }
}

and in activity/fragment

adapter.setItemAction { // <- it is Item
  // do something with it
}