get data from internet and push to array flutter - flutter

Question

So, here is my code.
Future<Album> fetchAlbum() async {
final response =
await http.get(Uri.https('jsonplaceholder.typicode.com', 'albums/1'));
if (response.statusCode == 200) {
// If the server did return a 200 OK response,
// then parse the JSON.
return Album.fromJson(jsonDecode(response.body));
//var data = jsonDecode(response.body);
} else {
// If the server did not return a 200 OK response,
// then throw an exception.
throw Exception('Failed to load album');
}
}
class Album {
final int userId;
final int id;
final String title;
Album({#required this.userId, #required this.id, #required this.title});
factory Album.fromJson(Map<String, dynamic> json) {
return Album(
userId: json['userId'],
id: json['id'],
title: json['title'],
);
}
}
I want to get Album values (userId, id, title) and push it to an array so i can do some math...
But i dont know how to do it, i manage to display the data on screen with Builder() method, but not acess it individually.

Answer 1

this should work!
Future<Album> fetchAlbum() async {
var response = await http.get('https;//jsonplaceholder.typicode.com' + '/albums/1');
if (response.statusCode == 200) {
return Album data = Album.fromJson(json.decode(response.body));
} else {
throw Exception('Failed to load album');
}
}
Album AlbumFromJson(String str) => TrueOrFalse.fromJson(json.decode(str));
String AlbumToJson(TrueOrFalse data) => json.encode(data.toJson());
class Album {
final int userId;
final int id;
final String title;
Album({#required this.userId, #required this.id, #required this.title});
factory Album.fromJson(Map<String, dynamic> json) {
return Album(
userId: json['userId'],
id: json['id'],
title: json['title'],
);
}
Map<String, dynamic> toJson() => {
"userId": userId,
"id": id,
"title": title,
};
}

Answer 2

I manage to make it work by creating a function and passing the values as parameter inside the factory.
Then, in the function "foo", i get the values and print it.
Future<Album> fetchAlbum() async {
final response =
await http.get(Uri.https('jsonplaceholder.typicode.com', 'albums/1'));
if (response.statusCode == 200) {
// If the server did return a 200 OK response,
// then parse the JSON.
return Album.fromJson(jsonDecode(response.body));
} else {
// If the server did not return a 200 OK response,
// then throw an exception.
throw Exception('Failed to load album');
}
}
class Album {
final int userId;
final int id;
final String title;
Album({#required this.userId, #required this.id, #required this.title});
factory Album.fromJson(Map<String, dynamic> json) {
foo(json['userId'], json['id'], json['title']);
return Album(
userId: json['userId'],
id: json['id'],
title: json['title'],
);
}
}
void foo(userId, id, title) async {
final user = title;
print(user);
}