优化

app/src/main/java/io/legado/app/model/ReadBook.kt

@@ -52,7 +52,6 @@ object ReadBook : CoroutineScope by MainScope() {
         durChapterIndex = book.durChapterIndex
         durChapterPos = book.durChapterPos
         isLocalBook = book.origin == BookType.local
-        chapterSize = book.totalChapterNum
         clearTextChapter()
         callBack?.upMenuView()
         callBack?.upPageAnim()
@@ -63,6 +62,18 @@ object ReadBook : CoroutineScope by MainScope() {
         }
     }
 
+    fun upData(book: Book) {
+        ReadBook.book = book
+        chapterSize = appDb.bookChapterDao.getChapterCount(book.bookUrl)
+        if (durChapterIndex != book.durChapterIndex) {
+            durChapterIndex = book.durChapterIndex
+            durChapterPos = book.durChapterPos
+            clearTextChapter()
+        }
+        callBack?.upMenuView()
+        upWebBook(book)
+    }
+
     fun upWebBook(book: Book) {
         if (book.origin == BookType.local) {
             bookSource = null

app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt

@@ -68,16 +68,8 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
             }
             syncBookProgress(book)
         } else {
-            ReadBook.book = book
+            ReadBook.upData(book)
-            if (ReadBook.durChapterIndex != book.durChapterIndex) {
-                ReadBook.durChapterIndex = book.durChapterIndex
-                ReadBook.durChapterPos = book.durChapterPos
-                ReadBook.clearTextChapter()
-            }
-            ReadBook.callBack?.upMenuView()
-            ReadBook.upWebBook(book)
             isInitFinish = true
-            ReadBook.chapterSize = appDb.bookChapterDao.getChapterCount(book.bookUrl)
             if (ReadBook.chapterSize == 0) {
                 if (book.tocUrl.isEmpty()) {
                     loadBookInfo(book)