Android Studio – How to retrieve data from a complicated json data model in Flutter

Shippingmodel shippingmodelFromJson(String str) => Shippingmodel.fromJson(json.decode(str));

String shippingmodelToJson(Shippingmodel data) => json.encode(data.toJson());

class Shippingmodel {
  Shippingmodel({
    this.sellerShipping,
    this.result,
    this.shippingType,
    this.value,
    this.valueString,
  });

  Map<String, List<SellerShipping>> sellerShipping;
  bool result;
  String shippingType;
  int value;
  String valueString;

  factory Shippingmodel.fromJson(Map<String, dynamic> json) => Shippingmodel(
    sellerShipping: Map.from(json["seller_shipping"]).map((k, v) => MapEntry<String, List<SellerShipping>>(k, List<SellerShipping>.from(v.map((x) => SellerShipping.fromJson(x))))),
    result: json["result"],
    shippingType: json["shipping_type"],
    value: json["value"],
    valueString: json["value_string"],
  );

  Map<String, dynamic> toJson() => {
    "seller_shipping": Map.from(sellerShipping).map((k, v) => MapEntry<String, dynamic>(k, List<dynamic>.from(v.map((x) => x.toJson())))),
    "result": result,
    "shipping_type": shippingType,
    "value": value,
    "value_string": valueString,
  };
}

class SellerShipping {
  SellerShipping({
    this.code,
    this.name,
    this.price,
    this.deadline,
    this.erroMsg,
  });

  String code;
  String name;
  String price;
  String deadline;
  String erroMsg;

  factory SellerShipping.fromJson(Map<String, dynamic> json) => SellerShipping(
    code: json["code"],
    name: json["name"],
    price: json["price"],
    deadline: json["deadline"],
    erroMsg: json["erroMsg"],
  );

  Map<String, dynamic> toJson() => {
    "code": code,
    "name": name,
    "price": price,
    "deadline": deadline,
    "erroMsg": erroMsg,
  };
}

This is the json data model. I’m perplexed as to how to retrieve anything, say price from sellerShipping. I’m calling it from a repository and passing the response. body. Any help would be appreciated!

This is the json data model. I’m perplexed as to how to retrieve anything, say price from sellerShipping. I’m calling it from a repository and passing the response. body. Any help would be appreciated!