데이터 클래스 data class PlanetSelect( var planet:String, var isSelected:Boolean = false ) isSelected를 사용할 수 있습니다. class HVHListAdapter(var context: Context, var data: MutableList<PlanetSelect>, callback:((MutableList<PlanetSelect>)-> Unit)): RecyclerView.Adapter<RecyclerView.ViewHolder>(){ lateinit var mainActivity :MainActivity override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder { return Holder(HvhListDataBinding.inflate(LayoutInflater.from(parent.context),parent,false)) } override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) { val binding = (holder as Holder).binding var … Read more