优化

app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceAdapter.kt

@@ -106,7 +106,6 @@ class BookSourceAdapter(context: Context, val callBack: CallBack) :
             } else {
                 when (payloads[0]) {
                     1 -> cb_book_source.isChecked = selected.contains(item)
-                    2 -> swt_enabled.isChecked = item.enabled
                 }
             }
         }

app/src/main/java/io/legado/app/ui/book/source/manage/DiffCallBack.kt

@@ -30,14 +30,4 @@ class DiffCallBack(
                 && oldItem.enabled == newItem.enabled
     }
 
-    override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? {
-        val oldItem = oldItems[oldItemPosition]
-        val newItem = newItems[newItemPosition]
-        return when {
-            oldItem.bookSourceName == newItem.bookSourceName
-                    && oldItem.bookSourceGroup == newItem.bookSourceGroup
-                    && oldItem.enabled != newItem.enabled -> 2
-            else -> null
-        }
-    }
 }