diff --git a/app/src/main/java/io/legado/app/model/ReadManga.kt b/app/src/main/java/io/legado/app/model/ReadManga.kt
index aa2819743..bdde96a35 100644
--- a/app/src/main/java/io/legado/app/model/ReadManga.kt
+++ b/app/src/main/java/io/legado/app/model/ReadManga.kt
@@ -47,9 +47,9 @@ object ReadManga : CoroutineScope by MainScope() {
     var chapterChanged = false
     var book: Book? = null
     val executor = globalExecutor
-    var durChapterPagePos = 0 //章节位置
-    var durChapterPageCount = 0//总章节
-    var durChapterCount = 0
+    var durChapterIndex = 0 //章节位置
+    var chapterSize = 0//总章节
+    var durChapterImageCount = 0
     var durChapterPos = 0
     var bookSource: BookSource? = null
     var chapterTitle: String = ""
@@ -65,7 +65,6 @@ object ReadManga : CoroutineScope by MainScope() {
     val downloadedChapters = hashSetOf<Int>()
     val downloadFailChapters = hashMapOf<Int, Int>()
     private val downloadLoadingChapters = arrayListOf<Int>()
-    var isMangaMode = false
     val downloadScope = CoroutineScope(SupervisorJob() + IO)
     var rateLimiter = ConcurrentRateLimiter(null)
 
@@ -74,11 +73,11 @@ object ReadManga : CoroutineScope by MainScope() {
             val book = book ?: return@execute
             book.lastCheckCount = 0
             book.durChapterTime = System.currentTimeMillis()
-            val changed = book.durChapterIndex != durChapterPagePos
-            book.durChapterIndex = durChapterPagePos
+            val changed = book.durChapterIndex != durChapterIndex
+            book.durChapterIndex = durChapterIndex
             book.durChapterPos = durChapterPos
             if (!pageChanged || changed) {
-                appDb.bookChapterDao.getChapter(book.bookUrl, durChapterPagePos)?.let {
+                appDb.bookChapterDao.getChapter(book.bookUrl, durChapterIndex)?.let {
                     book.durChapterTitle = it.getDisplayTitle(
                         ContentProcessor.get(book.name, book.origin).getTitleReplaceRules(),
                         book.getUseReplaceRule()
@@ -91,16 +90,15 @@ object ReadManga : CoroutineScope by MainScope() {
 
     fun upData(book: Book) {
         ReadManga.book = book
-        isMangaMode = true
-        durChapterPageCount = appDb.bookChapterDao.getChapterCount(book.bookUrl)
+        chapterSize = appDb.bookChapterDao.getChapterCount(book.bookUrl)
         simulatedChapterSize = if (book.readSimulating()) {
             book.simulatedTotalChapterNum()
         } else {
-            durChapterPageCount
+            chapterSize
         }
 
-        if (durChapterPagePos != book.durChapterIndex || tocChanged) {
-            durChapterPagePos = book.durChapterIndex
+        if (durChapterIndex != book.durChapterIndex || tocChanged) {
+            durChapterIndex = book.durChapterIndex
             durChapterPos = book.durChapterPos
         }
         upWebBook(book)
@@ -111,16 +109,15 @@ object ReadManga : CoroutineScope by MainScope() {
 
     fun resetData(book: Book) {
         ReadManga.book = book
-        isMangaMode = true
         readRecord.bookName = book.name
         readRecord.readTime = appDb.readRecordDao.getReadTime(book.name) ?: 0
-        durChapterPageCount = appDb.bookChapterDao.getChapterCount(book.bookUrl)
+        chapterSize = appDb.bookChapterDao.getChapterCount(book.bookUrl)
         simulatedChapterSize = if (book.readSimulating()) {
             book.simulatedTotalChapterNum()
         } else {
-            durChapterPageCount
+            chapterSize
         }
-        durChapterPagePos = book.durChapterIndex
+        durChapterIndex = book.durChapterIndex
         durChapterPos = book.durChapterPos
         upWebBook(book)
         synchronized(this) {
@@ -203,7 +200,7 @@ object ReadManga : CoroutineScope by MainScope() {
 
 
     fun loadContent() {
-        loadContent(durChapterPagePos)
+        loadContent(durChapterIndex)
     }
 
     fun loadContent(
@@ -245,11 +242,10 @@ object ReadManga : CoroutineScope by MainScope() {
         tocChanged = false
         chapterChanged = false
         book = null
-        durChapterPagePos = 0
-        isMangaMode = false
-        durChapterPageCount = 0
+        durChapterIndex = 0
+        chapterSize = 0
         durChapterPos = 0
-        durChapterCount = 0
+        durChapterImageCount = 0
         bookSource = null
         chapterTitle = ""
         loadingChapters.clear()
@@ -282,7 +278,7 @@ object ReadManga : CoroutineScope by MainScope() {
         }
         mTopChapter = chapter
         chapterTitle = chapter.title
-        if (chapter.index !in durChapterPagePos - 1..durChapterPagePos + 1) {
+        if (chapter.index !in durChapterIndex - 1..durChapterIndex + 1) {
             return
         }
         if (content.isNotEmpty()) {
@@ -295,9 +291,9 @@ object ReadManga : CoroutineScope by MainScope() {
                 }
             }.distinctUntilChanged().mapIndexed { index, src ->
                 MangaContent(
-                    mChapterPageCount = durChapterPageCount,
-                    mChapterPagePos = durChapterPagePos.plus(1),
-                    mChapterNextPagePos = durChapterPagePos.plus(1),
+                    chapterSize = chapterSize,
+                    mChapterIndex = durChapterIndex.plus(1),
+                    nextChapterIndex = durChapterIndex.plus(1),
                     mImageUrl = src,
                     mDurChapterPos = index.plus(1),
                     mChapterName = chapterTitle
@@ -306,22 +302,22 @@ object ReadManga : CoroutineScope by MainScope() {
                 this.forEach {
                     it.mDurChapterCount = this.size
                 }
-                durChapterCount = this.size
+                durChapterImageCount = this.size
             }
             val contentList = mutableListOf<Any>()
             contentList.add(
                 ReaderLoading(
-                    durChapterPagePos,
+                    durChapterIndex,
                     "阅读 ${chapter.title}",
-                    mNextChapterIndex = durChapterPagePos.plus(1)
+                    mNextChapterIndex = durChapterIndex.plus(1)
                 )
             )
             contentList.addAll(list)
             contentList.add(
                 ReaderLoading(
-                    durChapterPagePos,
+                    durChapterIndex,
                     "已读完 ${chapter.title}",
-                    mNextChapterIndex = durChapterPagePos.plus(1)
+                    mNextChapterIndex = durChapterIndex.plus(1)
                 )
             )
             runOnUI {
@@ -339,15 +335,15 @@ object ReadManga : CoroutineScope by MainScope() {
             return
         }
 
-        if (index > durChapterPageCount - 1) {
+        if (index > chapterSize - 1) {
             upToc(index)
             return
         }
-        if (durChapterPagePos < simulatedChapterSize - 1) {
+        if (durChapterIndex < simulatedChapterSize - 1) {
             durChapterPos = 0
-            durChapterPagePos = index
+            durChapterIndex = index
             saveRead()
-            loadContent(durChapterPagePos)
+            loadContent(durChapterIndex)
             AppLog.putDebug("moveToNextChapter-curPageChanged()")
             curPageChanged()
         } else {
@@ -374,18 +370,18 @@ object ReadManga : CoroutineScope by MainScope() {
         book.lastCheckTime = System.currentTimeMillis()
         WebBook.getChapterList(this, bookSource, book).onSuccess(IO) { cList ->
             if (book.bookUrl == ReadManga.book?.bookUrl
-                && cList.size > durChapterPageCount
+                && cList.size > chapterSize
             ) {
                 appDb.bookChapterDao.delByBook(book.bookUrl)
                 appDb.bookChapterDao.insert(*cList.toTypedArray())
                 saveRead()
                 durChapterPos = 0
-                durChapterPagePos = index
-                durChapterPageCount = cList.size
+                durChapterIndex = index
+                chapterSize = cList.size
                 simulatedChapterSize = book.simulatedTotalChapterNum()
-                loadContent(durChapterPagePos)
+                loadContent(durChapterIndex)
             } else {
-                durChapterPagePos = durChapterPagePos.minus(1)
+                durChapterIndex = durChapterIndex.minus(1)
                 saveRead()
                 gameOver = true
                 runOnUI {
@@ -409,7 +405,7 @@ object ReadManga : CoroutineScope by MainScope() {
                 runOnUI {
                     mCallback?.loadComplete()
                 }
-                if (durChapterPagePos >= durChapterPageCount.minus(1)) {
+                if (durChapterIndex >= chapterSize.minus(1)) {
                     gameOver = true
                     runOnUI {
                         mCallback?.noData()
@@ -475,16 +471,16 @@ object ReadManga : CoroutineScope by MainScope() {
                 //预下载
                 launch {
                     val maxChapterIndex =
-                        min(durChapterPagePos + AppConfig.preDownloadNum, durChapterPageCount)
-                    for (i in durChapterPagePos.plus(2)..maxChapterIndex) {
+                        min(durChapterIndex + AppConfig.preDownloadNum, chapterSize)
+                    for (i in durChapterIndex.plus(2)..maxChapterIndex) {
                         if (downloadedChapters.contains(i)) continue
                         if ((downloadFailChapters[i] ?: 0) >= 3) continue
                         downloadIndex(i)
                     }
                 }
                 launch {
-                    val minChapterIndex = durChapterPagePos - min(5, AppConfig.preDownloadNum)
-                    for (i in durChapterPagePos.minus(2) downTo minChapterIndex) {
+                    val minChapterIndex = durChapterIndex - min(5, AppConfig.preDownloadNum)
+                    for (i in durChapterIndex.minus(2) downTo minChapterIndex) {
                         if (downloadedChapters.contains(i)) continue
                         if ((downloadFailChapters[i] ?: 0) >= 3) continue
                         downloadIndex(i)
@@ -496,7 +492,7 @@ object ReadManga : CoroutineScope by MainScope() {
 
     private suspend fun downloadIndex(index: Int) {
         if (index < 0) return
-        if (index > durChapterPageCount - 1) {
+        if (index > chapterSize - 1) {
             upToc()
             return
         }
@@ -540,12 +536,12 @@ object ReadManga : CoroutineScope by MainScope() {
         book.lastCheckTime = System.currentTimeMillis()
         WebBook.getChapterList(this, bookSource, book).onSuccess(IO) { cList ->
             if (book.bookUrl == ReadManga.book?.bookUrl
-                && cList.size > durChapterPageCount
+                && cList.size > chapterSize
             ) {
                 appDb.bookChapterDao.delByBook(book.bookUrl)
                 appDb.bookChapterDao.insert(*cList.toTypedArray())
                 saveRead()
-                durChapterPageCount = cList.size
+                chapterSize = cList.size
                 simulatedChapterSize = book.simulatedTotalChapterNum()
             }
         }
@@ -601,23 +597,23 @@ object ReadManga : CoroutineScope by MainScope() {
     }
 
     fun setProgress(progress: BookProgress) {
-        if (progress.durChapterIndex < durChapterPageCount &&
-            (durChapterPagePos != progress.durChapterIndex
+        if (progress.durChapterIndex < chapterSize &&
+            (durChapterIndex != progress.durChapterIndex
                     || durChapterPos != progress.durChapterPos)
         ) {
             chapterChanged = true
-            if (progress.durChapterIndex == durChapterPagePos) {
+            if (progress.durChapterIndex == durChapterIndex) {
                 durChapterPos = progress.durChapterPos
                 mCallback?.adjustmentProgress()
             } else {
-                durChapterPagePos = progress.durChapterIndex
+                durChapterIndex = progress.durChapterIndex
                 durChapterPos = progress.durChapterPos
-                if (addLoading(durChapterPagePos)) {
-                    loadContent(durChapterPagePos)
+                if (addLoading(durChapterIndex)) {
+                    loadContent(durChapterIndex)
                 } else {
                     Coroutine.async {
                         val book = book!!
-                        appDb.bookChapterDao.getChapter(book.bookUrl, durChapterPagePos)
+                        appDb.bookChapterDao.getChapter(book.bookUrl, durChapterIndex)
                             ?.let { chapter ->
                                 getContent(
                                     downloadScope,
diff --git a/app/src/main/java/io/legado/app/model/recyclerView/MangaContent.kt b/app/src/main/java/io/legado/app/model/recyclerView/MangaContent.kt
index 5feab19dd..151fa3ec8 100644
--- a/app/src/main/java/io/legado/app/model/recyclerView/MangaContent.kt
+++ b/app/src/main/java/io/legado/app/model/recyclerView/MangaContent.kt
@@ -2,9 +2,9 @@ package io.legado.app.model.recyclerView
 
 
 data class MangaContent(
-    var mChapterPagePos: Int = 0,//总章节位置
-    var mChapterPageCount: Int,//总章节数量
-    var mChapterNextPagePos: Int = 0,//下一章
+    var mChapterIndex: Int = 0,//总章节位置
+    var chapterSize: Int,//总章节数量
+    var nextChapterIndex: Int = 0,//下一章
     val mImageUrl: String = "",//当前URL
     var mDurChapterPos: Int = 0,//当前章节位置
     var mDurChapterCount: Int = 0,//当前章节内容总数
diff --git a/app/src/main/java/io/legado/app/model/recyclerView/ReaderLoading.kt b/app/src/main/java/io/legado/app/model/recyclerView/ReaderLoading.kt
index ad7dcf9b1..6bc12d442 100644
--- a/app/src/main/java/io/legado/app/model/recyclerView/ReaderLoading.kt
+++ b/app/src/main/java/io/legado/app/model/recyclerView/ReaderLoading.kt
@@ -1,7 +1,7 @@
 package io.legado.app.model.recyclerView
 
 data class ReaderLoading(
-    val mChapterPagePos: Int = 0,
+    val mChapterIndex: Int = 0,
     val mMessage: String? = null,
     val mNextChapterIndex: Int = 0,
     var mLoading: Boolean = false,
diff --git a/app/src/main/java/io/legado/app/ui/book/manga/MangaViewModel.kt b/app/src/main/java/io/legado/app/ui/book/manga/MangaViewModel.kt
index aacbf9fab..636687635 100644
--- a/app/src/main/java/io/legado/app/ui/book/manga/MangaViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/manga/MangaViewModel.kt
@@ -50,7 +50,7 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
                 else -> appDb.bookDao.getBook(bookUrl)
             } ?: ReadManga.book
             when {
-                book != null -> initMange(book)
+                book != null -> initManga(book)
                 else -> context.getString(R.string.no_book)//没有找到书
             }
         }.onSuccess {
@@ -63,7 +63,7 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
         }
     }
 
-    private suspend fun initMange(book: Book) {
+    private suspend fun initManga(book: Book) {
         val isSameBook = ReadManga.book?.bookUrl == book.bookUrl
         if (isSameBook) {
             ReadManga.upData(book)
@@ -78,10 +78,7 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
             return
         }
 
-        if ((ReadManga.durChapterPageCount == 0 || book.isLocalModified()) && !loadChapterListAwait(
-                book
-            )
-        ) {
+        if ((ReadManga.chapterSize == 0 || book.isLocalModified()) && !loadChapterListAwait(book)) {
             return
         }
         ensureChapterExist()
@@ -108,7 +105,7 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
                 }
                 appDb.bookChapterDao.delByBook(oldBook.bookUrl)
                 appDb.bookChapterDao.insert(*cList.toTypedArray())
-                ReadManga.durChapterPageCount = cList.size
+                ReadManga.chapterSize = cList.size
                 ReadManga.simulatedChapterSize = book.simulatedTotalChapterNum()
                 return true
             }.onFailure {
@@ -138,8 +135,8 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
     }
 
     private fun ensureChapterExist() {
-        if (ReadManga.simulatedChapterSize > 0 && ReadManga.durChapterPagePos > ReadManga.simulatedChapterSize - 1) {
-            ReadManga.durChapterPagePos = ReadManga.simulatedChapterSize - 1
+        if (ReadManga.simulatedChapterSize > 0 && ReadManga.durChapterIndex > ReadManga.simulatedChapterSize - 1) {
+            ReadManga.durChapterIndex = ReadManga.simulatedChapterSize - 1
         }
     }
 
@@ -224,9 +221,9 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
     }
 
     fun openChapter(index: Int, durChapterPos: Int = 0) {
-        if (index < ReadManga.durChapterPageCount) {
+        if (index < ReadManga.chapterSize) {
             ReadManga.chapterChanged = true
-            ReadManga.durChapterPagePos = index
+            ReadManga.durChapterIndex = index
             ReadManga.durChapterPos = durChapterPos
             ReadManga.saveRead()
             ReadManga.loadContent(index)
@@ -249,10 +246,10 @@ class MangaViewModel(application: Application) : BaseViewModel(application) {
 
     fun refreshContentDur(book: Book) {
         execute {
-            appDb.bookChapterDao.getChapter(book.bookUrl, ReadManga.durChapterPagePos)
+            appDb.bookChapterDao.getChapter(book.bookUrl, ReadManga.durChapterIndex)
                 ?.let { chapter ->
                     BookHelp.delContent(book, chapter)
-                    openChapter(ReadManga.durChapterPagePos, ReadManga.durChapterPos)
+                    openChapter(ReadManga.durChapterIndex, ReadManga.durChapterPos)
                 }
         }
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/manga/ReadMangaActivity.kt b/app/src/main/java/io/legado/app/ui/book/manga/ReadMangaActivity.kt
index dd640ca12..1300c1e3c 100644
--- a/app/src/main/java/io/legado/app/ui/book/manga/ReadMangaActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/manga/ReadMangaActivity.kt
@@ -1,7 +1,6 @@
 package io.legado.app.ui.book.manga
 
 import android.annotation.SuppressLint
-import android.app.Activity
 import android.content.Intent
 import android.os.Build
 import android.os.Bundle
@@ -164,20 +163,23 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
         }
         loadMoreView.setOnClickListener {
             if (!loadMoreView.isLoading && !ReadManga.gameOver) {
-                scrollToBottom(true, ReadManga.durChapterPagePos)
+                scrollToBottom(true, ReadManga.durChapterIndex)
             }
         }
         loadMoreView.gone()
         mMangaFooterConfig =
             GSON.fromJsonObject<MangaFooterConfig>(AppConfig.mangaFooterConfig).getOrNull()
                 ?: MangaFooterConfig()
+    }
+
+    override fun observeLiveBus() {
         observeEvent<MangaFooterConfig>(EventBus.UP_MANGA_CONFIG) {
             mMangaFooterConfig = it
             upInfoBar(
-                ReadManga.durChapterPagePos.plus(1),
-                ReadManga.durChapterPageCount,
+                ReadManga.durChapterIndex.plus(1),
+                ReadManga.chapterSize,
                 ReadManga.durChapterPos.plus(1),
-                ReadManga.durChapterCount,
+                ReadManga.durChapterImageCount,
                 ReadManga.chapterTitle
             )
         }
@@ -185,7 +187,7 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
 
     private fun initRecyclerView() {
         mAdapter.isHorizontal = AppConfig.enableMangaHorizontalScroll
-        binding.mRecyclerMange.run {
+        binding.mRecyclerManga.run {
             adapter = mAdapter
             itemAnimator = null
             layoutManager = mLayoutManager
@@ -193,9 +195,7 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
             mLayoutManager.initialPrefetchItemCount = 4
             mLayoutManager.isItemPrefetchEnabled = true
             setItemViewCacheSize(AppConfig.preDownloadNum)
-            singlePagerScroller(
-                AppConfig.enableMangaHorizontalScroll
-            )
+            singlePagerScroller(AppConfig.enableMangaHorizontalScroll)
             disabledClickScroller(AppConfig.disableClickScroll)
             disableMangaScaling(AppConfig.disableMangaScale)
             setPreScrollListener { _, dx, dy, position ->
@@ -218,8 +218,8 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
                         if (content is MangaContent) {
                             ReadManga.durChapterPos = content.mDurChapterPos.minus(1)
                             upInfoBar(
-                                content.mChapterPagePos,
-                                content.mChapterPageCount,
+                                content.mChapterIndex,
+                                content.chapterSize,
                                 content.mDurChapterPos,
                                 content.mDurChapterCount,
                                 content.mChapterName
@@ -275,10 +275,10 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
                     if (list.size > 1) {
                         binding.infobar.isVisible = true
                         upInfoBar(
-                            ReadManga.durChapterPagePos.plus(1),
-                            ReadManga.durChapterPageCount,
+                            ReadManga.durChapterIndex.plus(1),
+                            ReadManga.chapterSize,
                             ReadManga.durChapterPos.plus(1),
-                            ReadManga.durChapterCount,
+                            ReadManga.durChapterImageCount,
                             ReadManga.chapterTitle
                         )
                     }
@@ -288,12 +288,12 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
                             (mAdapter.getCurrentList().last() as ReaderLoading).mNextChapterIndex
                         scrollToBottom(index = nextIndex)
                     } else {
-                        binding.mRecyclerMange.scrollToPosition(ReadManga.durChapterPos)
+                        binding.mRecyclerManga.scrollToPosition(ReadManga.durChapterPos)
                     }
                 }
 
                 if (ReadManga.chapterChanged) {
-                    binding.mRecyclerMange.scrollToPosition(ReadManga.durChapterPos)
+                    binding.mRecyclerManga.scrollToPosition(ReadManga.durChapterPos)
                 }
 
                 ReadManga.chapterChanged = false
@@ -305,10 +305,10 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
     }
 
     private fun upInfoBar(
-        chapterPagePos: Int,
-        chapterPageCount: Int,
+        chapterIndex: Int,
+        chapterSize: Int,
         chapterPos: Int,
-        chapterCount: Int,
+        chapterImageCount: Int,
         chapterName: String,
     ) {
         mMangaFooterConfig.run {
@@ -324,21 +324,21 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
                 if (!hidePageNumberLabel) {
                     mLabelBuilder.append(getString(R.string.manga_check_page_number))
                 }
-                mLabelBuilder.append("${chapterPos}/${chapterCount}").append(" ")
+                mLabelBuilder.append("${chapterPos}/${chapterImageCount}").append(" ")
             }
 
             if (!hideChapter) {
                 if (!hideChapterLabel) {
                     mLabelBuilder.append(getString(R.string.manga_check_chapter))
                 }
-                mLabelBuilder.append("${chapterPagePos}/${chapterPageCount}").append(" ")
+                mLabelBuilder.append("${chapterIndex}/${chapterSize}").append(" ")
             }
 
             if (!hideProgressRatio) {
                 if (!hideProgressRatioLabel) {
                     mLabelBuilder.append(getString(R.string.manga_check_progress))
                 }
-                mLabelBuilder.append("${chapterPagePos.div(chapterPageCount).times(100)}%")
+                mLabelBuilder.append("${chapterIndex.div(chapterSize).times(100)}%")
             }
         }
         binding.infobar.update(
@@ -395,7 +395,7 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
 
     override fun adjustmentProgress() {
         if (ReadManga.chapterChanged) {
-            binding.mRecyclerMange.scrollToPosition(ReadManga.durChapterPos)
+            binding.mRecyclerManga.scrollToPosition(ReadManga.durChapterPos)
             binding.flLoading.isGone = true
         }
     }
@@ -572,17 +572,17 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
 
     private fun addRecyclerViewPreloader(maxPreload: Int) {
         if (mRecyclerViewPreloader != null) {
-            binding.mRecyclerMange.removeOnScrollListener(mRecyclerViewPreloader!!)
+            binding.mRecyclerManga.removeOnScrollListener(mRecyclerViewPreloader!!)
         }
         mRecyclerViewPreloader = RecyclerViewPreloader(
             Glide.with(this), mAdapter, mSizeProvider, maxPreload
         )
-        binding.mRecyclerMange.addOnScrollListener(mRecyclerViewPreloader!!)
+        binding.mRecyclerManga.addOnScrollListener(mRecyclerViewPreloader!!)
     }
 
     private fun singlePagerScroller(enableHorizontalScroll: Boolean) {
         if (enableHorizontalScroll) {
-            mPagerSnapHelper.attachToRecyclerView(binding.mRecyclerMange)
+            mPagerSnapHelper.attachToRecyclerView(binding.mRecyclerManga)
         } else {
             mPagerSnapHelper.attachToRecyclerView(null)
         }
@@ -603,14 +603,14 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
 
     private fun disableMangaScaling(disable: Boolean) {
         binding.webtoonFrame.disableMangaScale = disable
-        binding.mRecyclerMange.disableMangaScaling = disable
+        binding.mRecyclerManga.disableMangaScaling = disable
         if (disable) {
-            binding.mRecyclerMange.resetZoom()
+            binding.mRecyclerManga.resetZoom()
         }
     }
 
     private fun disabledClickScroller(disable: Boolean) {
-        binding.mRecyclerMange.disabledClickScroller = disable
+        binding.mRecyclerManga.disabledClickScroller = disable
     }
 
     private fun upLayoutInDisplayCutoutMode() {
@@ -623,35 +623,47 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
     }
 
     private fun scrollToNext() {
-        if (binding.mRecyclerMange.isAtBottom()) {
+        if (binding.mRecyclerManga.isAtBottom()) {
             return
         }
-        val (dx, dy) = if (AppConfig.enableMangaHorizontalScroll) {
-            val width =
-                binding.mRecyclerMange.width - binding.mRecyclerMange.paddingStart - binding.mRecyclerMange.paddingEnd
-            Pair(width, 0)
+        val dx: Int
+        val dy: Int
+        if (AppConfig.enableMangaHorizontalScroll) {
+            val width = binding.mRecyclerManga.run {
+                width - paddingStart - paddingEnd
+            }
+            dx = width
+            dy = 0
         } else {
-            val height =
-                binding.mRecyclerMange.height - binding.mRecyclerMange.paddingTop - binding.mRecyclerMange.paddingBottom
-            Pair(0, height)
+            val height = binding.mRecyclerManga.run {
+                height - paddingTop - paddingBottom
+            }
+            dx = 0
+            dy = height
         }
-        binding.mRecyclerMange.smoothScrollBy(dx, dy, null)
+        binding.mRecyclerManga.smoothScrollBy(dx, dy, null)
     }
 
     private fun scrollToPrev() {
-        if (binding.mRecyclerMange.isAtTop()) {
+        if (binding.mRecyclerManga.isAtTop()) {
             return
         }
-        val (dx, dy) = if (AppConfig.enableMangaHorizontalScroll) {
-            val width =
-                binding.mRecyclerMange.width - binding.mRecyclerMange.paddingStart - binding.mRecyclerMange.paddingEnd
-            Pair(width, 0)
+        val dx: Int
+        val dy: Int
+        if (AppConfig.enableMangaHorizontalScroll) {
+            val width = binding.mRecyclerManga.run {
+                width - paddingStart - paddingEnd
+            }
+            dx = width
+            dy = 0
         } else {
-            val height =
-                binding.mRecyclerMange.height - binding.mRecyclerMange.paddingTop - binding.mRecyclerMange.paddingBottom
-            Pair(0, height)
+            val height = binding.mRecyclerManga.run {
+                height - paddingTop - paddingBottom
+            }
+            dx = 0
+            dy = height
         }
-        binding.mRecyclerMange.smoothScrollBy(-dx, -dy, null)
+        binding.mRecyclerManga.smoothScrollBy(-dx, -dy, null)
     }
 
     private fun startAutoPage() {
@@ -696,7 +708,7 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
                     ReadManga.book?.removeType(BookType.notShelf)
                     ReadManga.book?.save()
                     ReadManga.inBookshelf = true
-                    setResult(Activity.RESULT_OK)
+                    setResult(RESULT_OK)
                 }
                 noButton { viewModel.removeFromBookshelf { super.finish() } }
             }
@@ -704,9 +716,8 @@ class ReadMangaActivity : VMBaseActivity<ActivityMangaBinding, MangaViewModel>()
     }
 
     private fun RecyclerView.isAtTop(): Boolean {
-        return (mLayoutManager.findFirstCompletelyVisibleItemPosition() == 0) && !canScrollVertically(
-            -1
-        )
+        return (mLayoutManager.findFirstCompletelyVisibleItemPosition() == 0)
+                && !canScrollVertically(-1)
     }
 
     private fun RecyclerView.isAtBottom(): Boolean {
diff --git a/app/src/main/res/layout/activity_manga.xml b/app/src/main/res/layout/activity_manga.xml
index 9526d68f7..b81c9a38f 100644
--- a/app/src/main/res/layout/activity_manga.xml
+++ b/app/src/main/res/layout/activity_manga.xml
@@ -11,7 +11,7 @@
         android:layout_height="match_parent">
 
         <io.legado.app.ui.book.manga.rv.WebtoonRecyclerView
-            android:id="@+id/mRecyclerMange"
+            android:id="@+id/mRecyclerManga"
             android:layout_width="match_parent"
             android:layout_height="match_parent" />