diff --git a/app/src/main/java/io/legado/app/service/BaseReadAloudService.kt b/app/src/main/java/io/legado/app/service/BaseReadAloudService.kt
index ad204f420..84e610932 100644
--- a/app/src/main/java/io/legado/app/service/BaseReadAloudService.kt
+++ b/app/src/main/java/io/legado/app/service/BaseReadAloudService.kt
@@ -179,7 +179,9 @@ abstract class BaseReadAloudService : BaseService(),
         upNotification()
     }
 
-
+    /**
+     * 音频焦点变化
+     */
     override fun onAudioFocusChange(focusChange: Int) {
         when (focusChange) {
             AudioManager.AUDIOFOCUS_GAIN -> {