Xml

// XML way to do  

// layout file for the cell 
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/flower_image"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_margin="8dp"
        android:contentDescription="@string/flower_image_content_description"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/flower_text"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/flower_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:text="@string/flower1_name"
        android:textAppearance="?attr/textAppearanceHeadline5"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toEndOf="@+id/flower_image"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

// layout file for the screen
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layoutManager="LinearLayoutManager"/>

</androidx.constraintlayout.widget.ConstraintLayout>

// Adapter 

class FlowersAdapter(private val onClick: (Flower) -> Unit) :
    ListAdapter<Flower, FlowersAdapter.FlowerViewHolder>(FlowerDiffCallback) {

    /* ViewHolder for Flower, takes in the inflated view and the onClick behavior. */
    class FlowerViewHolder(itemView: View, val onClick: (Flower) -> Unit) :
        RecyclerView.ViewHolder(itemView) {
        private val flowerTextView: TextView = itemView.findViewById(R.id.flower_text)
        private val flowerImageView: ImageView = itemView.findViewById(R.id.flower_image)
        private var currentFlower: Flower? = null

        init {
            itemView.setOnClickListener {
                currentFlower?.let {
                    onClick(it)
                }
            }
        }

        /* Bind flower name and image. */
        fun bind(flower: Flower) {
            currentFlower = flower

            flowerTextView.text = flower.name
            if (flower.image != null) {
                flowerImageView.setImageResource(flower.image)
            } else {
                flowerImageView.setImageResource(R.drawable.rose)
            }
        }
    }

    /* Creates and inflates view and return FlowerViewHolder. */
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FlowerViewHolder {
        val view = LayoutInflater.from(parent.context)
            .inflate(R.layout.flower_item, parent, false)
        return FlowerViewHolder(view, onClick)
    }

    /* Gets current flower and uses it to bind view. */
    override fun onBindViewHolder(holder: FlowerViewHolder, position: Int) {
        val flower = getItem(position)
        holder.bind(flower)

    }
}

object FlowerDiffCallback : DiffUtil.ItemCallback<Flower>() {
    override fun areItemsTheSame(oldItem: Flower, newItem: Flower): Boolean {
        return oldItem == newItem
    }

    override fun areContentsTheSame(oldItem: Flower, newItem: Flower): Boolean {
        return oldItem.id == newItem.id
    }
}


// usage in the screen 

class FlowersListActivity : AppCompatActivity() {
// ...
override fun onCreate(savedInstanceState: Bundle?) {
// ...
setContentView(R.layout.activity_main)
// ...
val flowersAdapter = FlowersAdapter { /* do something */ }
val recyclerView: RecyclerView = findViewById(R.id.recycler_view)
recyclerView.adapter = flowersAdapter
// ...
}
// ..
}