更新

lib/enum/DataStatus.dart

@@ -0,0 +1,10 @@
+enum DataStatus {
+  Loading(1, '加载中'),
+  Fail(2, '失败'),
+  success(3, '成功');
+
+  final int code;
+  final String description;
+
+  const DataStatus(this.code, this.description);
+}