inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view)
{
    fun bind(position: Int) {

        val card = cardList[position]

        callback?.onClickCallback(card, itemView, position)
    }
}

interface AdapterCallback {
    fun onClickCallback(itemModel: Card, itemView: View, position: Int)
}

class CardDetailFragment : Fragment(), CardStackListener, CardStackAdapter.AdapterCallback {
override fun onClickCallback(itemModel: Card, itemView: View, position: Int) {
    stringTest = itemModel.cardQuestion
    this.itemModel = itemModel
    this.itemView = itemView
    this.position = position
}

override fun onCardDisappeared(view: View?, position: Int) {}
override fun onCardDragging(direction: Direction?, ratio: Float) {}
override fun onCardSwiped(direction: Direction?) {}
override fun onCardCanceled() {}
override fun onCardAppeared(view: View?, position: Int) {}
override fun onCardRewound() {}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)

    setString = arguments?.getString("setString")

    val collectionType = object : TypeToken<List<Card>>() {}.type
    cardList = Gson().fromJson(setString, collectionType) as List<Card>

    for (i in cardList!!) {
        adapter.addItem(i, this)
    }

    setUpCardStackView()
 }
}

myButton -> {
         activity?.toast(stringTest ?: "") // Always  given the third card instead of first one which is what is showing on the screen
        }