fix(character-detail): characterId 전달 및 상세 탭 전환 로직 수정

fix(character-detail): 탭 전환 시 프래그먼트 캐싱하여 재로딩 방지

CharacterDetailFragment에 newInstance(characterId) 도입 및 ARG 전달 구조 추가.
Fragment에서 잘못된 intent 참조 제거하고 arguments → activity.intent 순으로 안전하게 조회.
Activity 초기 진입 시 상세 탭 로딩 경로 정리 및 characterId 유효성 검사 시 종료 처리 보강.

replace 기반 교체를 add/show/hide 구조로 전환.
TAG_DETAIL/TAG_GALLERY로 인스턴스를 식별하여 FragmentManager 복원/재사용.
탭 이동 시 기존 인스턴스 표시만 수행하여 onViewCreated 재호출/네트워크 재요청 방지.

app/src/main/java/kr/co/vividnext/sodalive/chat/character/CharacterApi.kt

@@ -1,7 +1,7 @@
 package kr.co.vividnext.sodalive.chat.character
 
 import io.reactivex.rxjava3.core.Single
-import kr.co.vividnext.sodalive.chat.character.detail.CharacterDetailResponse
+import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterDetailResponse
 import kr.co.vividnext.sodalive.common.ApiResponse
 import retrofit2.http.GET
 import retrofit2.http.Header

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/CharacterDetailActivity.kt

@@ -1,394 +1,96 @@
 package kr.co.vividnext.sodalive.chat.character.detail
 
-import android.annotation.SuppressLint
-import android.content.Intent
-import android.graphics.Rect
 import android.os.Bundle
-import android.text.TextUtils
-import android.view.View
-import androidx.core.net.toUri
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
-import coil.load
-import coil.transform.CircleCropTransformation
-import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
-import io.reactivex.rxjava3.schedulers.Schedulers
+import androidx.fragment.app.Fragment
+import com.google.android.material.tabs.TabLayout
 import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.base.BaseActivity
-import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentListBottomSheet
-import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
-import kr.co.vividnext.sodalive.chat.talk.room.ChatRoomActivity
-import kr.co.vividnext.sodalive.common.LoadingDialog
-import kr.co.vividnext.sodalive.common.SharedPreferenceManager
+import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterDetailFragment
+import kr.co.vividnext.sodalive.chat.character.detail.gallery.CharacterGalleryFragment
 import kr.co.vividnext.sodalive.databinding.ActivityCharacterDetailBinding
-import kr.co.vividnext.sodalive.extensions.dpToPx
-import org.koin.android.ext.android.inject
-import org.koin.androidx.viewmodel.ext.android.viewModel
 
 class CharacterDetailActivity : BaseActivity<ActivityCharacterDetailBinding>(
     ActivityCharacterDetailBinding::inflate
 ) {
-    private val viewModel: CharacterDetailViewModel by viewModel()
-    private val commentRepository: CharacterCommentRepository by inject()
-
-    private lateinit var loadingDialog: LoadingDialog
-
-    private val adapter by lazy {
-        OtherCharacterAdapter(
-            onItemClick = { item ->
-                startActivity(
-                    Intent(this, CharacterDetailActivity::class.java).apply {
-                        putExtra(EXTRA_CHARACTER_ID, item.characterId)
-                    }
-                )
-            }
-        )
-    }
-
-    private var isWorldviewExpanded = false
-    private var isPersonalityExpanded = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        // 더미 데이터 로드 (추후 Intent/Repository 연동)
         val characterId = intent.getLongExtra(EXTRA_CHARACTER_ID, 0)
 
         if (characterId <= 0) {
             showToast("잘못된 접근 입니다.")
             finish()
-        } else {
-            bindObservers()
-            viewModel.load(characterId)
+            return
         }
+
+        super.onCreate(savedInstanceState)
     }
 
     override fun setupView() {
-        loadingDialog = LoadingDialog(this, layoutInflater)
-
         // 뒤로 가기
         binding.detailToolbar.tvBack.setOnClickListener { finish() }
 
         // 탭 구성: 상세, 갤러리
         binding.tabLayout.addTab(binding.tabLayout.newTab().setText("상세"))
         binding.tabLayout.addTab(binding.tabLayout.newTab().setText("갤러리"))
-        binding.tabLayout.addOnTabSelectedListener(object :
-            com.google.android.material.tabs.TabLayout.OnTabSelectedListener {
-            override fun onTabSelected(tab: com.google.android.material.tabs.TabLayout.Tab) {
-                if (tab.position == 0) {
-                    // 상세 탭: 기존 스크롤 화면 표시
-                    binding.scrollViewCharacterDetail.visibility = View.VISIBLE
-                    binding.flContainer.visibility = View.GONE
-                } else {
-                    // 갤러리 탭: 컨테이너 표시 및 갤러리 프래그먼트 로드
-                    binding.scrollViewCharacterDetail.visibility = View.GONE
-                    binding.flContainer.visibility = View.VISIBLE
-                    val fragment =
-                        kr.co.vividnext.sodalive.chat.character.detail.gallery.CharacterGalleryFragment()
-                    supportFragmentManager.beginTransaction()
-                        .replace(R.id.fl_container, fragment)
-                        .commit()
+
+        val characterId = intent.getLongExtra(EXTRA_CHARACTER_ID, 0)
+
+        // 기존 프래그먼트 복원/재사용
+        var detail = supportFragmentManager.findFragmentByTag(TAG_DETAIL)
+        var gallery = supportFragmentManager.findFragmentByTag(TAG_GALLERY)
+
+        val transaction = supportFragmentManager.beginTransaction()
+        if (detail == null) {
+            detail = CharacterDetailFragment.newInstance(characterId)
+            transaction.add(R.id.fl_container, detail, TAG_DETAIL)
+        }
+        if (gallery == null) {
+            gallery = CharacterGalleryFragment()
+            transaction.add(R.id.fl_container, gallery, TAG_GALLERY)
+            transaction.hide(gallery)
+        }
+        transaction.show(detail).commit()
+
+        binding.tabLayout
+            .addOnTabSelectedListener(object : TabLayout.OnTabSelectedListener {
+                override fun onTabSelected(tab: TabLayout.Tab) {
+                    showTab(tab.position)
                 }
-            }
 
-            override fun onTabUnselected(tab: com.google.android.material.tabs.TabLayout.Tab) {}
-            override fun onTabReselected(tab: com.google.android.material.tabs.TabLayout.Tab) {}
-        })
-
-        // 다른 캐릭터 리스트: 가로 스크롤
-        val recyclerView = binding.rvOtherCharacters
-        recyclerView.layoutManager = LinearLayoutManager(
-            this,
-            LinearLayoutManager.HORIZONTAL,
-            false
-        )
-
-        recyclerView.addItemDecoration(object : RecyclerView.ItemDecoration() {
-            override fun getItemOffsets(
-                outRect: Rect,
-                view: View,
-                parent: RecyclerView,
-                state: RecyclerView.State
-            ) {
-                super.getItemOffsets(outRect, view, parent, state)
-
-                when (parent.getChildAdapterPosition(view)) {
-                    0 -> {
-                        outRect.left = 0
-                        outRect.right = 8f.dpToPx().toInt()
-                    }
-
-                    adapter.itemCount - 1 -> {
-                        outRect.left = 8f.dpToPx().toInt()
-                        outRect.right = 0
-                    }
-
-                    else -> {
-                        outRect.left = 8f.dpToPx().toInt()
-                        outRect.right = 8f.dpToPx().toInt()
-                    }
-                }
-            }
-        })
-
-        recyclerView.adapter = adapter
-
-        // 세계관 전체보기 토글 클릭 리스너
-        binding.llWorldviewExpand.setOnClickListener {
-            toggleWorldviewExpand()
-        }
-        // 성격 전체보기 토글 클릭 리스너
-        binding.llPersonalityExpand.setOnClickListener {
-            togglePersonalityExpand()
-        }
-
-        // 대화하기 버튼 클릭: 채팅방 생성 API 호출
-        binding.btnChat.setOnClickListener {
-            val idFromState = viewModel.uiState.value?.detail?.characterId ?: 0L
-            val idFromIntent = intent.getLongExtra(EXTRA_CHARACTER_ID, 0L)
-            val targetId = if (idFromState > 0) idFromState else idFromIntent
-            if (targetId > 0) {
-                viewModel.createChatRoom(targetId)
-            } else {
-                showToast("잘못된 접근 입니다.")
-            }
-        }
+                override fun onTabUnselected(tab: TabLayout.Tab) {}
+                override fun onTabReselected(tab: TabLayout.Tab) {}
+            })
     }
 
-    @SuppressLint("SetTextI18n")
-    private fun bindObservers() {
-        viewModel.uiState.observe(this) { state ->
-            // 1) 로딩 상태 처리
-            if (state.isLoading) {
-                loadingDialog.show(screenWidth)
-            } else {
-                loadingDialog.dismiss()
-            }
+    private fun showTab(position: Int) {
+        val detail = supportFragmentManager.findFragmentByTag(TAG_DETAIL)
+        val gallery = supportFragmentManager.findFragmentByTag(TAG_GALLERY)
+        val transaction = supportFragmentManager.beginTransaction()
 
-            // 2) 에러 토스트 처리
-            state.error?.let { errorMsg ->
-                if (errorMsg.isNotBlank()) {
-                    showToast(errorMsg)
-                }
-            }
-
-            // 2-1) 채팅방 생성 성공 처리 (이벤트)
-            state.chatRoomId?.let { roomId ->
-                startActivity(ChatRoomActivity.newIntent(this, roomId))
-                viewModel.consumeChatRoomCreated()
-            }
-
-            // 3) 상세 데이터가 있을 경우에만 기존 UI 바인딩 수행
-            val detail = state.detail ?: return@observe
-
-            // 배경 이미지
-            binding.ivCharacterBackground.load(detail.imageUrl) { crossfade(true) }
-
-            // 기본 정보
-            binding.detailToolbar.tvBack.text = detail.name
-            binding.tvCharacterName.text = detail.name
-            binding.tvCharacterStatus.text = when (detail.characterType) {
-                CharacterType.CLONE -> "Clone"
-                CharacterType.CHARACTER -> "Character"
-            }
-            // 캐릭터 타입에 따른 배경 설정
-            binding.tvCharacterStatus.setBackgroundResource(
-                when (detail.characterType) {
-                    CharacterType.CLONE -> R.drawable.bg_character_status_clone
-                    CharacterType.CHARACTER -> R.drawable.bg_character_status_character
-                }
-            )
-            binding.tvCharacterDescription.text = detail.description
-            binding.tvCharacterTags.text = detail.tags
-
-            // 세계관 내용과 버튼 가시성 초기화
-            val worldviewText = detail.backgrounds?.description.orEmpty()
-            binding.tvWorldviewContent.text = worldviewText
-            // 먼저 전체 줄 수를 측정한 뒤 접힘 레이아웃 적용
-            binding.tvWorldviewContent.post {
-                val totalLines = binding.tvWorldviewContent.layout?.lineCount
-                    ?: binding.tvWorldviewContent.lineCount
-                val needExpand = totalLines > 3
-                binding.llWorldviewExpand.visibility = if (needExpand) View.VISIBLE else View.GONE
-                // 표시 상태는 항상 접힘 상태로 시작
-                applyWorldviewCollapsedLayout()
-                isWorldviewExpanded = false
-                binding.tvWorldviewExpand.text = "더보기"
-                binding.ivWorldviewExpand.setImageResource(R.drawable.ic_chevron_down)
-            }
-
-            // 성격 내용과 버튼 가시성 초기화
-            val personalityText = detail.personalities?.description.orEmpty()
-            binding.tvPersonalityContent.text = personalityText
-            // 먼저 전체 줄 수를 측정한 뒤 접힘 레이아웃 적용
-            binding.tvPersonalityContent.post {
-                val totalLines = binding.tvPersonalityContent.layout?.lineCount
-                    ?: binding.tvPersonalityContent.lineCount
-                val needExpand = totalLines > 3
-                binding.llPersonalityExpand.visibility = if (needExpand) View.VISIBLE else View.GONE
-                applyPersonalityCollapsedLayout()
-                isPersonalityExpanded = false
-                binding.tvPersonalityExpand.text = "더보기"
-                binding.ivPersonalityExpand.setImageResource(R.drawable.ic_chevron_down)
-            }
-
-            // 원작 섹션 표시/숨김
-            if (detail.originalTitle.isNullOrBlank() || detail.originalLink.isNullOrBlank()) {
-                binding.llOriginalSection.visibility = View.GONE
-            } else {
-                binding.llOriginalSection.visibility = View.VISIBLE
-                binding.tvOriginalContent.text = detail.originalTitle
-                binding.tvOriginalLink.setOnClickListener {
-                    runCatching {
-                        startActivity(Intent(Intent.ACTION_VIEW, detail.originalLink.toUri()))
-                    }
-                }
-            }
-
-            // 다른 캐릭터 리스트
-            if (detail.others.isEmpty()) {
-                binding.llOtherCharactersSection.visibility = View.GONE
-            } else {
-                binding.llOtherCharactersSection.visibility = View.VISIBLE
-                adapter.submitList(detail.others)
-            }
-
-            // 댓글 섹션 바인딩
-            binding.tvCommentsCount.text = "${detail.totalComments}"
-            // 댓글 섹션 터치 시 리스트 BottomSheet 열기 (댓글 1개 이상일 때)
-            binding.llCommentsSection.setOnClickListener(null)
-            if (detail.totalComments > 0) {
-                binding.llCommentsSection.setOnClickListener {
-                    val sheet = CharacterCommentListBottomSheet(detail.characterId)
-                    sheet.show(supportFragmentManager, "character_comments")
-                }
-            }
-            if (
-                detail.totalComments > 0 &&
-                detail.latestComment != null &&
-                detail.latestComment.comment.isNotBlank()
-            ) {
-                binding.llLatestComment.visibility = View.VISIBLE
-                binding.llNoComment.visibility = View.GONE
-
-                val latest = detail.latestComment
-                val profileUrl = latest.memberProfileImage
-                if (profileUrl.isNotBlank()) {
-                    binding.ivCommentProfile.load(profileUrl) {
-                        crossfade(true)
-                        placeholder(R.drawable.ic_placeholder_profile)
-                        error(R.drawable.ic_placeholder_profile)
-                        transformations(CircleCropTransformation())
-                    }
-                } else {
-                    binding.ivMyProfile.load(R.drawable.ic_placeholder_profile) {
-                        crossfade(true)
-                        placeholder(R.drawable.ic_placeholder_profile)
-                        error(R.drawable.ic_placeholder_profile)
-                        transformations(CircleCropTransformation())
-                    }
-                }
-
-                binding.tvLatestComment.text = latest.comment.ifBlank {
-                    latest.memberNickname
-                }
-            } else {
-                binding.llLatestComment.visibility = View.GONE
-                binding.llNoComment.visibility = View.VISIBLE
-
-                // 내 프로필 이미지는 SharedPreference의 profileImage 사용 (fallback: placeholder)
-                val myProfileUrl = SharedPreferenceManager.profileImage
-                if (myProfileUrl.isNotBlank()) {
-                    binding.ivMyProfile.load(myProfileUrl) {
-                        crossfade(true)
-                        placeholder(R.drawable.ic_placeholder_profile)
-                        error(R.drawable.ic_placeholder_profile)
-                        transformations(CircleCropTransformation())
-                    }
-                } else {
-                    binding.ivMyProfile.load(R.drawable.ic_placeholder_profile) {
-                        crossfade(true)
-                        placeholder(R.drawable.ic_placeholder_profile)
-                        error(R.drawable.ic_placeholder_profile)
-                        transformations(CircleCropTransformation())
-                    }
-                }
-
-                binding.ivSendComment.setOnClickListener {
-                    val text = binding.etCommentInput.text?.toString()?.trim().orEmpty()
-                    if (text.isBlank()) return@setOnClickListener
-
-                    val idFromState = viewModel.uiState.value?.detail?.characterId ?: 0L
-                    val idFromIntent = intent.getLongExtra(EXTRA_CHARACTER_ID, 0L)
-                    val characterId = if (idFromState > 0) idFromState else idFromIntent
-                    if (characterId <= 0) {
-                        showToast("잘못된 접근 입니다.")
-                        return@setOnClickListener
-                    }
-
-                    val token = "Bearer ${SharedPreferenceManager.token}"
-                    loadingDialog.show(screenWidth)
-                    val d = commentRepository.createComment(characterId, text, token)
-                        .subscribeOn(Schedulers.io())
-                        .observeOn(AndroidSchedulers.mainThread())
-                        .doFinally { loadingDialog.dismiss() }
-                        .subscribe({ resp ->
-                            if (resp.success) {
-                                binding.etCommentInput.setText("")
-                                showToast("등록되었습니다.")
-                                viewModel.load(characterId)
-                            } else {
-                                showToast(resp.message ?: "요청 중 오류가 발생했습니다")
-                            }
-                        }, { e ->
-                            showToast(e.message ?: "요청 중 오류가 발생했습니다")
-                        })
-                    compositeDisposable.add(d)
-                }
-            }
+        fun Fragment?.hideIfExists() {
+            if (this != null && !this.isHidden) transaction.hide(this)
         }
-    }
 
-    private fun toggleWorldviewExpand() {
-        isWorldviewExpanded = !isWorldviewExpanded
-        if (isWorldviewExpanded) {
-            // 확장 상태
-            binding.tvWorldviewContent.maxLines = Integer.MAX_VALUE
-            binding.tvWorldviewContent.ellipsize = null
-            binding.tvWorldviewExpand.text = "간략히"
-            binding.ivWorldviewExpand.setImageResource(R.drawable.ic_chevron_up)
-        } else {
-            // 접힘 상태 (3줄)
-            applyWorldviewCollapsedLayout()
-            binding.tvWorldviewExpand.text = "더보기"
-            binding.ivWorldviewExpand.setImageResource(R.drawable.ic_chevron_down)
+        // 모두 숨김
+        detail.hideIfExists()
+        gallery.hideIfExists()
+
+        // 포지션에 맞게 표시
+        val toShow: Fragment? = when (position) {
+            0 -> detail
+            else -> gallery
         }
+        if (toShow != null) transaction.show(toShow)
+        transaction.commit()
     }
 
-    private fun applyWorldviewCollapsedLayout() {
-        binding.tvWorldviewContent.maxLines = 3
-        binding.tvWorldviewContent.ellipsize = TextUtils.TruncateAt.END
-    }
-
-    private fun togglePersonalityExpand() {
-        isPersonalityExpanded = !isPersonalityExpanded
-        if (isPersonalityExpanded) {
-            binding.tvPersonalityContent.maxLines = Integer.MAX_VALUE
-            binding.tvPersonalityContent.ellipsize = null
-            binding.tvPersonalityExpand.text = "간략히"
-            binding.ivPersonalityExpand.setImageResource(R.drawable.ic_chevron_up)
-        } else {
-            applyPersonalityCollapsedLayout()
-            binding.tvPersonalityExpand.text = "더보기"
-            binding.ivPersonalityExpand.setImageResource(R.drawable.ic_chevron_down)
-        }
-    }
-
-    private fun applyPersonalityCollapsedLayout() {
-        binding.tvPersonalityContent.maxLines = 3
-        binding.tvPersonalityContent.ellipsize = TextUtils.TruncateAt.END
+    fun setTitle(title: String) {
+        binding.detailToolbar.tvBack.text = title
     }
 
     companion object {
         const val EXTRA_CHARACTER_ID = "extra_character_id"
+        private const val TAG_DETAIL = "tag_character_detail"
+        private const val TAG_GALLERY = "tag_character_gallery"
     }
 }

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailFragment.kt

@@ -1,19 +1,383 @@
 package kr.co.vividnext.sodalive.chat.character.detail.detail
 
+import android.annotation.SuppressLint
+import android.content.Intent
+import android.graphics.Rect
 import android.os.Bundle
+import android.text.TextUtils
 import android.view.View
+import androidx.core.net.toUri
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import coil.load
+import coil.transform.CircleCropTransformation
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.schedulers.Schedulers
+import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.base.BaseFragment
+import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentListBottomSheet
+import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
+import kr.co.vividnext.sodalive.chat.character.detail.CharacterDetailActivity
+import kr.co.vividnext.sodalive.chat.character.detail.CharacterDetailActivity.Companion.EXTRA_CHARACTER_ID
+import kr.co.vividnext.sodalive.chat.talk.room.ChatRoomActivity
+import kr.co.vividnext.sodalive.common.LoadingDialog
+import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.databinding.FragmentCharacterDetailBinding
+import kr.co.vividnext.sodalive.extensions.dpToPx
+import org.koin.android.ext.android.inject
+import org.koin.androidx.viewmodel.ext.android.viewModel
 
 /**
  * 캐릭터 상세 - 상세 탭
- * TODO: 기존 CharacterDetailActivity UI 바인딩 로직을 이 Fragment로 점진적으로 이전합니다.
  */
 class CharacterDetailFragment : BaseFragment<FragmentCharacterDetailBinding>(
     FragmentCharacterDetailBinding::inflate
 ) {
+
+    companion object {
+        private const val ARG_CHARACTER_ID = "arg_character_id"
+
+        fun newInstance(characterId: Long): CharacterDetailFragment =
+            CharacterDetailFragment().apply {
+                arguments = Bundle().apply { putLong(ARG_CHARACTER_ID, characterId) }
+            }
+    }
+
+    private val viewModel: CharacterDetailViewModel by viewModel()
+    private val commentRepository: CharacterCommentRepository by inject()
+
+    private lateinit var loadingDialog: LoadingDialog
+
+    private val characterId: Long by lazy {
+        arguments?.getLong(ARG_CHARACTER_ID)
+            ?: requireActivity().intent.getLongExtra(EXTRA_CHARACTER_ID, 0L)
+    }
+
+    private val adapter by lazy {
+        OtherCharacterAdapter(
+            onItemClick = { item ->
+                startActivity(
+                    Intent(
+                        requireActivity(),
+                        CharacterDetailActivity::class.java
+                    ).apply {
+                        putExtra(EXTRA_CHARACTER_ID, item.characterId)
+                    }
+                )
+            }
+        )
+    }
+
+    private var isWorldviewExpanded = false
+    private var isPersonalityExpanded = false
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        // 추후 상세 UI/로직 반영 예정
+
+        setupView()
+        bindObservers()
+
+        viewModel.load(characterId)
     }
+
+    @SuppressLint("SetTextI18n")
+    private fun bindObservers() {
+        viewModel.uiState.observe(viewLifecycleOwner) { state ->
+            // 1) 로딩 상태 처리
+            if (state.isLoading) {
+                loadingDialog.show(screenWidth)
+            } else {
+                loadingDialog.dismiss()
+            }
+
+            // 2) 에러 토스트 처리
+            state.error?.let { errorMsg ->
+                if (errorMsg.isNotBlank()) {
+                    showToast(errorMsg)
+                }
+            }
+
+            // 2-1) 채팅방 생성 성공 처리 (이벤트)
+            state.chatRoomId?.let { roomId ->
+                startActivity(
+                    ChatRoomActivity.newIntent(
+                        requireActivity(),
+                        roomId
+                    )
+                )
+                viewModel.consumeChatRoomCreated()
+            }
+
+            // 3) 상세 데이터가 있을 경우에만 기존 UI 바인딩 수행
+            val detail = state.detail ?: return@observe
+
+            // 배경 이미지
+            binding.ivCharacterBackground.load(detail.imageUrl) { crossfade(true) }
+
+            // 기본 정보
+            (requireActivity() as CharacterDetailActivity).setTitle(detail.name)
+            binding.tvCharacterName.text = detail.name
+            binding.tvCharacterStatus.text = when (detail.characterType) {
+                CharacterType.CLONE -> "Clone"
+                CharacterType.CHARACTER -> "Character"
+            }
+            // 캐릭터 타입에 따른 배경 설정
+            binding.tvCharacterStatus.setBackgroundResource(
+                when (detail.characterType) {
+                    CharacterType.CLONE -> R.drawable.bg_character_status_clone
+                    CharacterType.CHARACTER -> R.drawable.bg_character_status_character
+                }
+            )
+            binding.tvCharacterDescription.text = detail.description
+            binding.tvCharacterTags.text = detail.tags
+
+            // 세계관 내용과 버튼 가시성 초기화
+            val worldviewText = detail.backgrounds?.description.orEmpty()
+            binding.tvWorldviewContent.text = worldviewText
+            // 먼저 전체 줄 수를 측정한 뒤 접힘 레이아웃 적용
+            binding.tvWorldviewContent.post {
+                val totalLines = binding.tvWorldviewContent.layout?.lineCount
+                    ?: binding.tvWorldviewContent.lineCount
+                val needExpand = totalLines > 3
+                binding.llWorldviewExpand.visibility = if (needExpand) View.VISIBLE else View.GONE
+                // 표시 상태는 항상 접힘 상태로 시작
+                applyWorldviewCollapsedLayout()
+                isWorldviewExpanded = false
+                binding.tvWorldviewExpand.text = "더보기"
+                binding.ivWorldviewExpand.setImageResource(R.drawable.ic_chevron_down)
+            }
+
+            // 성격 내용과 버튼 가시성 초기화
+            val personalityText = detail.personalities?.description.orEmpty()
+            binding.tvPersonalityContent.text = personalityText
+            // 먼저 전체 줄 수를 측정한 뒤 접힘 레이아웃 적용
+            binding.tvPersonalityContent.post {
+                val totalLines = binding.tvPersonalityContent.layout?.lineCount
+                    ?: binding.tvPersonalityContent.lineCount
+                val needExpand = totalLines > 3
+                binding.llPersonalityExpand.visibility = if (needExpand) View.VISIBLE else View.GONE
+                applyPersonalityCollapsedLayout()
+                isPersonalityExpanded = false
+                binding.tvPersonalityExpand.text = "더보기"
+                binding.ivPersonalityExpand.setImageResource(R.drawable.ic_chevron_down)
+            }
+
+            // 원작 섹션 표시/숨김
+            if (detail.originalTitle.isNullOrBlank() || detail.originalLink.isNullOrBlank()) {
+                binding.llOriginalSection.visibility = View.GONE
+            } else {
+                binding.llOriginalSection.visibility = View.VISIBLE
+                binding.tvOriginalContent.text = detail.originalTitle
+                binding.tvOriginalLink.setOnClickListener {
+                    runCatching {
+                        startActivity(Intent(Intent.ACTION_VIEW, detail.originalLink.toUri()))
+                    }
+                }
+            }
+
+            // 다른 캐릭터 리스트
+            if (detail.others.isEmpty()) {
+                binding.llOtherCharactersSection.visibility = View.GONE
+            } else {
+                binding.llOtherCharactersSection.visibility = View.VISIBLE
+                adapter.submitList(detail.others)
+            }
+
+            // 댓글 섹션 바인딩
+            binding.tvCommentsCount.text = "${detail.totalComments}"
+            // 댓글 섹션 터치 시 리스트 BottomSheet 열기 (댓글 1개 이상일 때)
+            binding.llCommentsSection.setOnClickListener(null)
+            if (detail.totalComments > 0) {
+                binding.llCommentsSection.setOnClickListener {
+                    val sheet = CharacterCommentListBottomSheet(detail.characterId)
+                    sheet.show(requireActivity().supportFragmentManager, "character_comments")
+                }
+            }
+            if (
+                detail.totalComments > 0 &&
+                detail.latestComment != null &&
+                detail.latestComment.comment.isNotBlank()
+            ) {
+                binding.llLatestComment.visibility = View.VISIBLE
+                binding.llNoComment.visibility = View.GONE
+
+                val latest = detail.latestComment
+                val profileUrl = latest.memberProfileImage
+                if (profileUrl.isNotBlank()) {
+                    binding.ivCommentProfile.load(profileUrl) {
+                        crossfade(true)
+                        placeholder(R.drawable.ic_placeholder_profile)
+                        error(R.drawable.ic_placeholder_profile)
+                        transformations(CircleCropTransformation())
+                    }
+                } else {
+                    binding.ivMyProfile.load(R.drawable.ic_placeholder_profile) {
+                        crossfade(true)
+                        placeholder(R.drawable.ic_placeholder_profile)
+                        error(R.drawable.ic_placeholder_profile)
+                        transformations(CircleCropTransformation())
+                    }
+                }
+
+                binding.tvLatestComment.text = latest.comment.ifBlank {
+                    latest.memberNickname
+                }
+            } else {
+                binding.llLatestComment.visibility = View.GONE
+                binding.llNoComment.visibility = View.VISIBLE
+
+                // 내 프로필 이미지는 SharedPreference의 profileImage 사용 (fallback: placeholder)
+                val myProfileUrl = SharedPreferenceManager.profileImage
+                if (myProfileUrl.isNotBlank()) {
+                    binding.ivMyProfile.load(myProfileUrl) {
+                        crossfade(true)
+                        placeholder(R.drawable.ic_placeholder_profile)
+                        error(R.drawable.ic_placeholder_profile)
+                        transformations(CircleCropTransformation())
+                    }
+                } else {
+                    binding.ivMyProfile.load(R.drawable.ic_placeholder_profile) {
+                        crossfade(true)
+                        placeholder(R.drawable.ic_placeholder_profile)
+                        error(R.drawable.ic_placeholder_profile)
+                        transformations(CircleCropTransformation())
+                    }
+                }
+
+                binding.ivSendComment.setOnClickListener {
+                    val text = binding.etCommentInput.text?.toString()?.trim().orEmpty()
+                    if (text.isBlank()) return@setOnClickListener
+
+                    val idFromState = viewModel.uiState.value?.detail?.characterId ?: 0L
+                    val targetCharacterId = if (idFromState > 0) idFromState else characterId
+                    if (targetCharacterId <= 0) {
+                        showToast("잘못된 접근 입니다.")
+                        return@setOnClickListener
+                    }
+
+                    val token = "Bearer ${SharedPreferenceManager.token}"
+                    loadingDialog.show(screenWidth)
+                    val d = commentRepository.createComment(targetCharacterId, text, token)
+                        .subscribeOn(Schedulers.io())
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .doFinally { loadingDialog.dismiss() }
+                        .subscribe({ resp ->
+                            if (resp.success) {
+                                binding.etCommentInput.setText("")
+                                showToast("등록되었습니다.")
+                                viewModel.load(targetCharacterId)
+                            } else {
+                                showToast(resp.message ?: "요청 중 오류가 발생했습니다")
+                            }
+                        }, { e ->
+                            showToast(e.message ?: "요청 중 오류가 발생했습니다")
+                        })
+                    compositeDisposable.add(d)
+                }
+            }
+        }
+    }
+
+    private fun setupView() {
+        loadingDialog = LoadingDialog(requireActivity(), layoutInflater)
+
+        // 다른 캐릭터 리스트: 가로 스크롤
+        val recyclerView = binding.rvOtherCharacters
+        recyclerView.layoutManager = LinearLayoutManager(
+            requireContext(),
+            LinearLayoutManager.HORIZONTAL,
+            false
+        )
+
+        recyclerView.addItemDecoration(object : RecyclerView.ItemDecoration() {
+            override fun getItemOffsets(
+                outRect: Rect,
+                view: View,
+                parent: RecyclerView,
+                state: RecyclerView.State
+            ) {
+                super.getItemOffsets(outRect, view, parent, state)
+
+                when (parent.getChildAdapterPosition(view)) {
+                    0 -> {
+                        outRect.left = 0
+                        outRect.right = 8f.dpToPx().toInt()
+                    }
+
+                    adapter.itemCount - 1 -> {
+                        outRect.left = 8f.dpToPx().toInt()
+                        outRect.right = 0
+                    }
+
+                    else -> {
+                        outRect.left = 8f.dpToPx().toInt()
+                        outRect.right = 8f.dpToPx().toInt()
+                    }
+                }
+            }
+        })
+
+        recyclerView.adapter = adapter
+
+        // 세계관 전체보기 토글 클릭 리스너
+        binding.llWorldviewExpand.setOnClickListener {
+            toggleWorldviewExpand()
+        }
+        // 성격 전체보기 토글 클릭 리스너
+        binding.llPersonalityExpand.setOnClickListener {
+            togglePersonalityExpand()
+        }
+
+        // 대화하기 버튼 클릭: 채팅방 생성 API 호출
+        binding.btnChat.setOnClickListener {
+            val idFromState = viewModel.uiState.value?.detail?.characterId ?: 0L
+            val targetId = if (idFromState > 0) idFromState else characterId
+            if (targetId > 0) {
+                viewModel.createChatRoom(targetId)
+            } else {
+                showToast("잘못된 접근 입니다.")
+            }
+        }
+    }
+
+    private fun toggleWorldviewExpand() {
+        isWorldviewExpanded = !isWorldviewExpanded
+        if (isWorldviewExpanded) {
+            // 확장 상태
+            binding.tvWorldviewContent.maxLines = Integer.MAX_VALUE
+            binding.tvWorldviewContent.ellipsize = null
+            binding.tvWorldviewExpand.text = "간략히"
+            binding.ivWorldviewExpand.setImageResource(R.drawable.ic_chevron_up)
+        } else {
+            // 접힘 상태 (3줄)
+            applyWorldviewCollapsedLayout()
+            binding.tvWorldviewExpand.text = "더보기"
+            binding.ivWorldviewExpand.setImageResource(R.drawable.ic_chevron_down)
+        }
+    }
+
+    private fun applyWorldviewCollapsedLayout() {
+        binding.tvWorldviewContent.maxLines = 3
+        binding.tvWorldviewContent.ellipsize = TextUtils.TruncateAt.END
+    }
+
+    private fun togglePersonalityExpand() {
+        isPersonalityExpanded = !isPersonalityExpanded
+        if (isPersonalityExpanded) {
+            binding.tvPersonalityContent.maxLines = Integer.MAX_VALUE
+            binding.tvPersonalityContent.ellipsize = null
+            binding.tvPersonalityExpand.text = "간략히"
+            binding.ivPersonalityExpand.setImageResource(R.drawable.ic_chevron_up)
+        } else {
+            applyPersonalityCollapsedLayout()
+            binding.tvPersonalityExpand.text = "더보기"
+            binding.ivPersonalityExpand.setImageResource(R.drawable.ic_chevron_down)
+        }
+    }
+
+    private fun applyPersonalityCollapsedLayout() {
+        binding.tvPersonalityContent.maxLines = 3
+        binding.tvPersonalityContent.ellipsize = TextUtils.TruncateAt.END
+    }
+
 }

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailRepository.kt

@@ -1,4 +1,4 @@
-package kr.co.vividnext.sodalive.chat.character.detail
+package kr.co.vividnext.sodalive.chat.character.detail.detail
 
 import kr.co.vividnext.sodalive.chat.character.CharacterApi
 import kr.co.vividnext.sodalive.chat.talk.TalkApi

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailResponse.kt

@@ -1,4 +1,4 @@
-package kr.co.vividnext.sodalive.chat.character.detail
+package kr.co.vividnext.sodalive.chat.character.detail.detail
 
 import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailViewModel.kt

@@ -1,4 +1,4 @@
-package kr.co.vividnext.sodalive.chat.character.detail
+package kr.co.vividnext.sodalive.chat.character.detail.detail
 
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/OtherCharacterAdapter.kt

@@ -1,4 +1,4 @@
-package kr.co.vividnext.sodalive.chat.character.detail
+package kr.co.vividnext.sodalive.chat.character.detail.detail
 
 import android.annotation.SuppressLint
 import android.view.LayoutInflater

app/src/main/java/kr/co/vividnext/sodalive/chat/talk/room/CharacterInfo.kt

@@ -5,7 +5,7 @@ package kr.co.vividnext.sodalive.chat.talk.room
 
 import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName
-import kr.co.vividnext.sodalive.chat.character.detail.CharacterType
+import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterType
 
 @Keep
 data class CharacterInfo(

app/src/main/java/kr/co/vividnext/sodalive/chat/talk/room/ChatRoomActivity.kt

@@ -16,7 +16,7 @@ import androidx.recyclerview.widget.RecyclerView
 import coil.load
 import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.base.BaseActivity
-import kr.co.vividnext.sodalive.chat.character.detail.CharacterType
+import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterType
 import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.databinding.ActivityChatRoomBinding
 import kr.co.vividnext.sodalive.extensions.dpToPx