RecyclerView点击子项跳转kotlin

以下是在Kotlin中实现RecyclerView点击子项跳转的示例代码：

1. 在RecyclerView的Adapter中设置子项点击事件监听器：

class MyAdapter(private val itemList: List<Item>) : RecyclerView.Adapter<MyAdapter.ViewHolder>() {

    private var listener: OnItemClickListener? = null

    fun setOnItemClickListener(listener: OnItemClickListener) {
        this.listener = listener
    }

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

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val item = itemList[position]
        holder.textView.text = item.text
        holder.itemView.setOnClickListener {
            listener?.onItemClick(item)
        }
    }

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

    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val textView: TextView = itemView.findViewById(R.id.text_view)
    }

    interface OnItemClickListener {
        fun onItemClick(item: Item)
    }
}

2. 在Activity或Fragment中实现OnItemClickListener接口，并在onCreateView方法中设置RecyclerView的Adapter和点击事件监听器：

class MyFragment : Fragment(), MyAdapter.OnItemClickListener {

    private lateinit var recyclerView: RecyclerView

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view = inflater.inflate(R.layout.fragment_layout, container, false)
        recyclerView = view.findViewById(R.id.recycler_view)
        recyclerView.layoutManager = LinearLayoutManager(context)
        val itemList = listOf(Item("Item 1"), Item("Item 2"), Item("Item 3"))
        val adapter = MyAdapter(itemList)
        adapter.setOnItemClickListener(this)
        recyclerView.adapter = adapter
        return view
    }

    override fun onItemClick(item: Item) {
        // 处理子项点击事件，跳转到其他Activity或Fragment
        val intent = Intent(context, DetailActivity::class.java)
        intent.putExtra("text", item.text)
        startActivity(intent)
    }
}