import 'package:json_annotation/json_annotation.dart'; part 'orderStatus.g.dart'; @JsonSerializable() class OrderStatus { OrderStatus(); @JsonKey(name: '_type') num type; @JsonKey(name: '_title') String title; @JsonKey(name: '_msg') String msg; @JsonKey(name: '_class') String className; @JsonKey(name: '_payType') String payType; factory OrderStatus.fromJson(Map json) => _$OrderStatusFromJson(json); Map toJson() => _$OrderStatusToJson(this); }