From 755bc626324719961bce29a5e11ebab4b4a539fe Mon Sep 17 00:00:00 2001
From: gedoor <gekunfei@live.com>
Date: Thu, 3 Dec 2020 19:28:21 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
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---
 app/src/main/java/io/legado/app/help/BookHelp.kt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/io/legado/app/help/BookHelp.kt b/app/src/main/java/io/legado/app/help/BookHelp.kt
index a9364536f..00a94e47a 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -225,7 +225,8 @@ object BookHelp {
         oldDurChapterName: String?,
         newChapterList: List<BookChapter>
     ): Int {
-        if (oldChapterListSize == 0) return 0
+        if (oldChapterListSize == 0) return oldDurChapterIndex
+        if (newChapterList.isEmpty()) return oldDurChapterIndex
         val oldChapterNum = getChapterNum(oldDurChapterName)
         val oldName = getPureChapterName(oldDurChapterName)
         val newChapterSize = newChapterList.size