Android Kotlin回收视图reloadData

class MyAdapter(private val dataSet: MutableList<String>) : RecyclerView.Adapter<MyAdapter.ViewHolder>() {

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

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

    override fun onBindViewHolder(viewHolder: ViewHolder, position: Int) {
        viewHolder.textView.text = dataSet[position]
    }

    override fun getItemCount() = dataSet.size

    fun updateData(newData: List<String>) {
        dataSet.clear()
        dataSet.addAll(newData)
        notifyDataSetChanged() // 这相当于reloadData
    }
}

// 在Activity或Fragment中
val adapter = MyAdapter(mutableListOf())
recyclerView.adapter = adapter

// 当需要刷新数据时
adapter.updateData(newDataList)

class MyDiffCallback : DiffUtil.ItemCallback<String>() {
    override fun areItemsTheSame(oldItem: String, newItem: String): Boolean {
        return oldItem == newItem
    }

    override fun areContentsTheSame(oldItem: String, newItem: String): Boolean {
        return oldItem == newItem
    }
}

val adapter = ListAdapter<String, MyAdapter.ViewHolder>(MyDiffCallback())