只需创建一个接口并在调用Activity中实现它。在Activity中创建适配器示例时，传递该接口沿着并在适配器类中的视图的单击事件上，使用要传递回Activity的数据调用接口的方法。

interface OnItemClickListener{
        fun onClick(pos: Int)
    }


 class YourActivity: AppCompatActivity(), OnItemClickListener {

    override fun onStart() {
        super.onStart()
        //Create an instance of your adapter and pass the interface.
        // Here @this context is being passed as Activity is implementing the interface.
        val cardListAdapter = CardListAdapter(this)

    }
    override fun onClick(pos: Int) {
        //Add your logic
    }

}

// Then in your adapter class

class YourAdapter(private val itemClickListener: OnItemClickListener) :
    RecyclerView.Adapter<CardListAdapter.CardViewHolder>() {
        //Your code
        override fun onBindViewHolder(holder: CardListAdapter.CardViewHolder, position: Int) {
            yourView.setOnClickListener {
                itemClickListener.onClick(position)
            }
        }
        
    }

首先你需要创建一个接口

interface OnItemListener {
    fun onItemSelect(position: Int)
}

然后在调用recyclerView适配器的类中，将其传递给recyclerView适配器，如下所示

var cardAdapter = CardAdapter(object :
            OnItemListener {
            override fun onItemSelect(position: Int) {
               // you can handle your data here
               // your position that you passed comes here
            }
        })
 var layoutManager = GridLayoutManager(context, 2)
 yourRecyclerViewId.adapter = cardAdapter
 yourRecyclerViewId.layoutManager = layoutManager

最后在你的适配器这样做

class CardAdapter(
private val onItemListener: OnItemListener
) 
: RecyclerView.Adapter<CardAdapter.CardViewHolder>(), View.OnClickListener {
        private var cardList = ArrayList<Card>()
        private lateinit var card: Card

并在适配器的on click事件中调用它，如下所示：

onItemListener.onItemSelect(yourPosition)