add array to json from map flutter code example

Example: how to parse an array of json objects in flutter

//pass your decoded json
Map<String, dynamic> json = jsonDecode(rawJson);

List<Location> locations = List<Location>.from(json["locations"].map((x) => Location.fromJson(x)))
//Location class => days is a premitive list and can be deserialized below
class Location {
  Location({
    this.name,
    this.days,
  });

  String name;
  List<int> days;

  factory Location.fromJson(Map<String, dynamic> json) => Location(
    name: json["name"],
    days: List<int>.from(json["days"].map((x) => x)),
  );

  Map<String, dynamic> toJson() => {
    "name": name,
    "days": List<dynamic>.from(days.map((x) => x)),
  };
}