up

app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfViewModel.kt

@@ -35,8 +35,10 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
                 if (book.origin != BookType.local) {
                     val bookSource = App.db.bookSourceDao().getBookSource(book.origin)
                     bookSource?.let {
+                        synchronized(this) {
                             updateList.add(book.bookUrl)
                             postEvent(Bus.UP_BOOK, book.bookUrl)
+                        }
                         WebBook(bookSource).getChapterList(book).onSuccess(IO) {
                             it?.let {
                                 App.db.bookDao().update(book)
@@ -45,11 +47,13 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
                                 }
                             }
                         }.onFinally {
+                            synchronized(this) {
                                 updateList.remove(book.bookUrl)
                                 postEvent(Bus.UP_BOOK, book.bookUrl)
                             }
                         }
                     }
+                }
                 delay(50)
             }
         }