class NearModel { int userId; String name; String avatarUrl; int distance; NearModel({this.userId, this.name, this.avatarUrl, this.distance}); NearModel.fromJson(Map json) { userId = json['userId']; name = json['name']; avatarUrl = json['avatarUrl']; distance = json['distance']; } Map toJson() { final Map data = new Map(); data['userId'] = this.userId; data['name'] = this.name; data['avatarUrl'] = this.avatarUrl; data['distance'] = this.distance; return data; } }