android kotlin recyclerview return only 1 item.
and A textview is displayed within one item.
enter image description here

class HttpAdapter(context: Context) :
    ListAdapter<RentBikeStatus, HttpAdapter.VH>(HttpDiffCallback()) {

    inner class VH(binding: RecyclerItemBinding) : RecyclerView.ViewHolder(binding.root) {
        val title: TextView = binding.tv
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): VH {
        val binding = RecyclerItemBinding.inflate(LayoutInflater.from(parent.context),parent,false)
        return VH(binding)
    }

    override fun onBindViewHolder(holder: VH, position: Int) {
        val item = getItem(position)
        Log.d("dddddd",item.toString())
        Log.d("dddddd",item.rentBikeStatus.row[position].stationName)
            val stationNames = item.rentBikeStatus.row.map { it.stationName }.joinToString("n")
            holder.title.text = stationNames
    }

    private class HttpDiffCallback : DiffUtil.ItemCallback<RentBikeStatus>() {
        override fun areItemsTheSame(oldItem: RentBikeStatus, newItem: RentBikeStatus): Boolean {
            return oldItem.rentBikeStatus.row.getOrNull(1)?.stationName == newItem.rentBikeStatus.row.getOrNull(
                1
            )?.stationName
        }

        override fun areContentsTheSame(oldItem: RentBikeStatus, newItem: RentBikeStatus): Boolean {
            return oldItem.rentBikeStatus.row.getOrNull(1)?.stationName == newItem.rentBikeStatus.row.getOrNull(
                1
            )?.stationName
        }
    }
}

I continued to modify onBindViewHolder().
However, data continues to be distributed to 1 item.