[Mission] 4주차 과제 제출 #35
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yangjiae12
approved these changes
Oct 12, 2025
| fun bind(album: Album){ | ||
| binding.homeTodayAlbumTitleTv.text = album.title | ||
| binding.homeTodayAlbumSingerTv.text = album.singer | ||
| binding.homeTodayAlbumIv.setImageResource(album.coverImg!!) |
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널 강제 언래핑을 하면 NPE 위험이 있으니까 모델을 Int로 보장하거나 플레이스 홀더 처리를 고려해 봐도 좋을 것 같습니다!
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| override fun onBindViewHolder(holder: AlbumRVAdapter.ViewHolder, position: Int) { | ||
| holder.bind(albumlist[position]) | ||
| holder.itemView.setOnClickListener { mItemClickListener.onItemClick(albumlist[position]) } | ||
| holder.binding.homeTodayAlbumArrowIv.setOnClickListener { sendMiniPlayer.changeText(albumlist[position]) } | ||
| // holder.binding.homeTodayAlbumTitleTv.setOnClickListener { mItemClickListner.onRemoveAlbum(position) } | ||
| } |
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현재 클릭 리스너가 bind() 함수 내부에 설정되어 있는데, onBindViewHolder가 호출되어 bind()가 실행될 때마다, 즉 아이템이 화면에 나타날 때마다 리스너 객체를 새로 생성하여 설정하게 되고 이로 인해 불필요한 객체를 생성하게 된다고 생각합니다. 따라서 ViewHolder의 init 블록을 사용하여 클릭 리스너를 한 번만 설정하면 좋을 것 같습니다.
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| fun removeitem(position: Int){ | ||
| albumlist.removeAt(position) | ||
| notifyDataSetChanged() | ||
| } |
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현재 notifyDataSetChanged()를 통한 전체 갱신을 하고 있는데, addItem, removeItem에서 전체 갱신은 성능 저하를 유발할 수도 있기 때문에, notifyItemInserted(lastIndex), notifyItemRemoved(position)로 바꾸어 부분 갱신을 사용하는 것을 고려해 봐도 좋을 것 같습니다.
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📌 PR 제목
4주차 미션 제출 : FLO 클론 코딩
✅ 변경 사항
📷 영상 및 스크린샷
로직 실행 사진
🔗 알게 된 사항
RecyclerView를 이용하는 방법과 interface를 이용하는 방법에 대하여 알 수 있었습니다.
📝 질문 사항
콜백에 대하여 더 알아보고 싶어요