LessNumerousGCRecyclerViewAdapter.kt

class LessNumerousGCRecyclerViewAdapter(private val context: Context,
                                         private val numbers: List<Int>): RecyclerView.Adapter<NumerousGCViewHolder>() {

    val bitBitmap = BitmapFactory.decodeResource(context.resources, R.drawable.big_bitmap)
    val smallBitmap = BitmapFactory.decodeResource(context.resources, R.drawable.small_bitmap)

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): NumerousGCViewHolder {
        val view = LayoutInflater.from(parent.context)
            .inflate(R.layout.item_numerous_gc, parent, false)
        return NumerousGCViewHolder(view)
    }

    override fun getItemCount(): Int {
        return numbers.size
    }

    override fun onBindViewHolder(vh: NumerousGCViewHolder, position: Int) {
        vh.textView.text = position.toString()

        //Reuse bitmap
        val bitmap = if(position % 2 == 0) bitBitmap else smallBitmap
        vh.imageView.setImageBitmap(bitmap)
    }
}