diff --git a/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt b/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt
index 689eae713..82e3c46bd 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt
@@ -207,6 +207,7 @@ class PageView(context: Context, attrs: AttributeSet) : FrameLayout(context, att
         fun chapterSize(): Int
         fun durChapterIndex(): Int
         fun durChapterPos(): Int
+
         /**
          * chapterOnDur: 0为当前页,1为下一页,-1为上一页
          */