diff --git a/app/src/main/java/io/legado/app/ui/book/read/Help.kt b/app/src/main/java/io/legado/app/ui/book/read/Help.kt
index 8d87e89ed..853a070da 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/Help.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/Help.kt
@@ -63,7 +63,9 @@ object Help {
         }
     }
 
-
+    /**
+     * 屏幕方向
+     */
     @SuppressLint("SourceLockedOrientationActivity")
     fun setOrientation(activity: Activity) = activity.apply {
         when (AppConfig.requestedDirection) {