在循环视图Kotlin中添加和删除项目

// 创建数据源
val itemList: MutableList<String> = mutableListOf("Item 1", "Item 2", "Item 3")

// 创建适配器
class MyAdapter(private val itemList: List<String>) : RecyclerView.Adapter<MyAdapter.ViewHolder>() {
    // ... 其他必要的方法

    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.bind(item)
    }

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

    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        fun bind(item: String) {
            // 绑定数据到视图
            itemView.textView.text = item
        }
    }
}

// 初始化RecyclerView
val recyclerView: RecyclerView = findViewById(R.id.recyclerView)
val layoutManager: RecyclerView.LayoutManager = LinearLayoutManager(this)
val adapter: MyAdapter = MyAdapter(itemList)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter

// 添加项目
val newItem = "New Item"
itemList.add(newItem)
adapter.notifyItemInserted(itemList.size - 1)

// 删除项目
val positionToRemove = 1
if (positionToRemove >= 0 && positionToRemove < itemList.size) {
    itemList.removeAt(positionToRemove)
    adapter.notifyItemRemoved(positionToRemove)
}