RecyclerItemClickListener.kt

//package ...

import android.content.Context
import android.view.GestureDetector
import android.view.MotionEvent
import android.view.View
import androidx.recyclerview.widget.RecyclerView

fun RecyclerView.setOnItemClickListener(onItemClickListener: (itemView: View, position: Int) -> Unit) {
	addOnItemTouchListener(
		RecyclerItemClickListener(
			context,
			this,
			onItemClickListener = onItemClickListener))
}

fun RecyclerView.setOnItemLongClickListener(onItemLongClickListener: (itemView: View, position: Int) -> Unit) {
	addOnItemTouchListener(
		RecyclerItemClickListener(
			context,
			this,
			onItemLongClickListener = onItemLongClickListener))
}

fun RecyclerView.setOnItemClickListeners(
	onItemClickListener: (itemView: View, position: Int) -> Unit,
	onItemLongClickListener: (itemView: View, position: Int) -> Unit) {
	addOnItemTouchListener(
		RecyclerItemClickListener(
			context,
			this,
			onItemClickListener = onItemClickListener,
			onItemLongClickListener = onItemLongClickListener))
}

private class RecyclerItemClickListener(
	context: Context,
	recyclerView: RecyclerView,
	private val onItemClickListener: ((itemView: View, position: Int) -> Unit)? = null,
	private val onItemLongClickListener: ((itemView: View, position: Int) -> Unit)? = null) :
	RecyclerView.OnItemTouchListener {

	var mGestureDetector: GestureDetector =
		GestureDetector(context, object : GestureDetector.SimpleOnGestureListener() {
			override fun onSingleTapUp(e: MotionEvent): Boolean {
				return true
			}

			override fun onLongPress(e: MotionEvent) {
				val child = recyclerView.findChildViewUnder(e.x, e.y)
				if (child != null && onItemLongClickListener != null) {
					onItemLongClickListener.invoke(
						child,
						recyclerView.getChildAdapterPosition(child))
				}
			}
		})

	override fun onInterceptTouchEvent(view: RecyclerView, e: MotionEvent): Boolean {
		val childView = view.findChildViewUnder(e.x, e.y)
		if (childView != null && onItemClickListener != null && mGestureDetector.onTouchEvent(e)) {
			onItemClickListener.invoke(childView, view.getChildAdapterPosition(childView))
			return true
		}
		return false
	}

	override fun onTouchEvent(view: RecyclerView, motionEvent: MotionEvent) {}
	override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) {}
}