From 2f2ba9a751f1e11b5e153c629531bc712ee3a84f Mon Sep 17 00:00:00 2001
From: Horis <8674809+821938089@users.noreply.github.com>
Date: Sun, 9 Jun 2024 11:50:36 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
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---
 .../app/ui/book/read/page/delegate/ScrollPageDelegate.kt  | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
index 5239e5f87..bec255657 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
@@ -154,8 +154,8 @@ class ScrollPageDelegate(readView: ReadView) : PageDelegate(readView) {
      */
     private fun calcNextPageOffset(): Int {
         val visibleHeight = ChapterProvider.visibleHeight
-        val book = ReadBook.book!!
-        if (book.isImage) {
+        val book = ReadBook.book
+        if (book == null || book.isImage) {
             return -visibleHeight
         }
         val visiblePage = readView.getCurVisiblePage()
@@ -170,8 +170,8 @@ class ScrollPageDelegate(readView: ReadView) : PageDelegate(readView) {
 
     private fun calcPrevPageOffset(): Int {
         val visibleHeight = ChapterProvider.visibleHeight
-        val book = ReadBook.book!!
-        if (book.isImage) {
+        val book = ReadBook.book
+        if (book == null || book.isImage) {
             return visibleHeight
         }
         val visiblePage = readView.getCurVisiblePage()