import 'package:json_annotation/json_annotation.dart'; part 'phone_event_bean.g.dart'; @JsonSerializable() class PhoneEventBean { @JsonKey(name: 'startTime') int startTime; @JsonKey(name: 'endTime') int endTime; PhoneEventBean({ required this.startTime, required this.endTime, }); factory PhoneEventBean.fromJson(Map json) => _$PhoneEventBeanFromJson(json); Map toJson() => _$PhoneEventBeanToJson(this); }