默认值

lib/utils/sql.dart

@@ -184,14 +184,14 @@ class SqlManager {
      }
      else{
        Console.log('Sql----------有当前书籍的数据----------------------');
-       final result =  await db!.update(
+       final result =  await db?.update(
          'read_history',
          {'chapter_id':chapterId},
          where: 'book_id = ?',
          whereArgs: [bookId],
        );
        Console.log('Sql----------更新数据结果：$result----------------------');
-       return result;
+       return result??0;
      }
   }