diff --git a/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
index ecb8c9592..0361c462d 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
@@ -74,4 +74,8 @@ class BookInfoEditActivity :
                 })
         }
     }
+
+    override fun coverChangeTo(coverUrl: String) {
+
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt b/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt
index 0deebf906..f566cbbbb 100644
--- a/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt
@@ -68,6 +68,6 @@ class ChangeCoverDialog : DialogFragment() {
     }
 
     interface CallBack {
-
+        fun coverChangeTo(coverUrl: String)
     }
 }
\ No newline at end of file