activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recycler"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginBottom="8dp" />

item.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linearLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/name"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        tools:text="Name"
        android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
        app:layout_constraintEnd_toStartOf="@+id/age"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/age"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        tools:text="Age"
        android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

package com.javadude.recyclerexample1

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.ItemTouchHelper
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import kotlinx.android.extensions.LayoutContainer
import kotlinx.android.synthetic.main.activity_main.recycler
import kotlinx.android.synthetic.main.item.age
import kotlinx.android.synthetic.main.item.name

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val people = mutableListOf(
                Person("Alex", 25),
                Person("Claire", 21),
                Person("Nicole", 30),
                Person("Scott", 52),
                Person("Trevor", 23)
        )
        val adapter = Adapter1(people)
        recycler.adapter = adapter
        recycler.layoutManager = LinearLayoutManager(this)
        ItemTouchHelper(Swiper(adapter)).attachToRecyclerView(recycler)
    }

    class Swiper(val adapter: Adapter1) : ItemTouchHelper.Callback() {
        override fun getMovementFlags(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder) =
                makeMovementFlags(0, ItemTouchHelper.START or ItemTouchHelper.END)

        override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder) = false

        override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
            adapter.delete(viewHolder.adapterPosition)
        }

    }
    data class Person(val name : String, val age : Int)

    class Adapter1(private val items : MutableList<Person>) : RecyclerView.Adapter<Holder1>() {
        override fun getItemCount() = items.size
//        init {
//            setHasStableIds(true)
//        }

        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) =
                Holder1(LayoutInflater.from(parent.context).inflate(R.layout.item, parent, false))

        override fun onBindViewHolder(holder: Holder1, position: Int) {
            holder.bind(items[position])
        }

//        override fun getItemId(position: Int) = position.toLong()

        fun delete(row : Int) {
            items.removeAt(row)
            notifyItemRemoved(row)
        }
    }

    class Holder1(override val containerView: View) : RecyclerView.ViewHolder(containerView), LayoutContainer {
        fun bind(person : Person) {
            name.text = person.name
            age.text = person.age.toString()
        }
    }
}