NoSuchMethodError : The Setter "movies=" was called on null - api

Question

Future<YifyMovies> getData() async {
var res = await http.get("https://yts.lt/api/v2/list_movies.json");
var decodedJson = jsonDecode(res.body);
YifyMovies movie = YifyMovies();
movie.data.movies = [];
for (var json in decodedJson) {
movie.data.movies.add(Movies.fromJson(json));
}
return movie;
}
Yify Movies class:-
It's the JSON from the above API converted int0 dart.
class YifyMovies {
String status;
String statusMessage;
Data data;
YifyMovies({this.status, this.statusMessage, this.data});
YifyMovies.fromJson(Map<String, dynamic> json) {
status = json['status'];
statusMessage = json['status_message'];
data = json['data'] != null ? new Data.fromJson(json['data']) : null;
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['status'] = this.status;
data['status_message'] = this.statusMessage;
if (this.data != null) {
data['data'] = this.data.toJson();
}
return data;
}
}
class Data {
int movieCount;
int limit;
int pageNumber;
List<Movies> movies;
Data({this.movieCount, this.limit, this.pageNumber, this.movies});
Data.fromJson(Map<String, dynamic> json) {
movieCount = json['movie_count'];
limit = json['limit'];
pageNumber = json['page_number'];
if (json['movies'] != null) {
movies = new List<Movies>();
json['movies'].forEach((v) {
movies.add(new Movies.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['movie_count'] = this.movieCount;
data['limit'] = this.limit;
data['page_number'] = this.pageNumber;
if (this.movies != null) {
data['movies'] = this.movies.map((v) => v.toJson()).toList();
}
return data;
}
}
class Movies {
int id;
String url;
String imdbCode;
String title;
String titleEnglish;
String titleLong;
String slug;
int year;
double rating;
int runtime;
List<String> genres;
String summary;
String descriptionFull;
String synopsis;
String ytTrailerCode;
String language;
String mpaRating;
String backgroundImage;
String backgroundImageOriginal;
String smallCoverImage;
String mediumCoverImage;
String largeCoverImage;
String state;
List<Torrents> torrents;
String dateUploaded;
int dateUploadedUnix;
Movies(
{this.id,
this.url,
this.imdbCode,
this.title,
this.titleEnglish,
this.titleLong,
this.slug,
this.year,
this.rating,
this.runtime,
this.genres,
this.summary,
this.descriptionFull,
this.synopsis,
this.ytTrailerCode,
this.language,
this.mpaRating,
this.backgroundImage,
this.backgroundImageOriginal,
this.smallCoverImage,
this.mediumCoverImage,
this.largeCoverImage,
this.state,
this.torrents,
this.dateUploaded,
this.dateUploadedUnix});
Movies.fromJson(Map<String, dynamic> json) {
id = json['id'];
url = json['url'];
imdbCode = json['imdb_code'];
title = json['title'];
titleEnglish = json['title_english'];
titleLong = json['title_long'];
slug = json['slug'];
year = json['year'];
rating = json['rating'];
runtime = json['runtime'];
genres = json['genres'].cast<String>();
summary = json['summary'];
descriptionFull = json['description_full'];
synopsis = json['synopsis'];
ytTrailerCode = json['yt_trailer_code'];
language = json['language'];
mpaRating = json['mpa_rating'];
backgroundImage = json['background_image'];
backgroundImageOriginal = json['background_image_original'];
smallCoverImage = json['small_cover_image'];
mediumCoverImage = json['medium_cover_image'];
largeCoverImage = json['large_cover_image'];
state = json['state'];
if (json['torrents'] != null) {
torrents = new List<Torrents>();
json['torrents'].forEach((v) {
torrents.add(new Torrents.fromJson(v));
});
}
dateUploaded = json['date_uploaded'];
dateUploadedUnix = json['date_uploaded_unix'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['url'] = this.url;
data['imdb_code'] = this.imdbCode;
data['title'] = this.title;
data['title_english'] = this.titleEnglish;
data['title_long'] = this.titleLong;
data['slug'] = this.slug;
data['year'] = this.year;
data['rating'] = this.rating;
data['runtime'] = this.runtime;
data['genres'] = this.genres;
data['summary'] = this.summary;
data['description_full'] = this.descriptionFull;
data['synopsis'] = this.synopsis;
data['yt_trailer_code'] = this.ytTrailerCode;
data['language'] = this.language;
data['mpa_rating'] = this.mpaRating;
data['background_image'] = this.backgroundImage;
data['background_image_original'] = this.backgroundImageOriginal;
data['small_cover_image'] = this.smallCoverImage;
data['medium_cover_image'] = this.mediumCoverImage;
data['large_cover_image'] = this.largeCoverImage;
data['state'] = this.state;
if (this.torrents != null) {
data['torrents'] = this.torrents.map((v) => v.toJson()).toList();
}
data['date_uploaded'] = this.dateUploaded;
data['date_uploaded_unix'] = this.dateUploadedUnix;
return data;
}
}
class Torrents {
String url;
String hash;
String quality;
String type;
int seeds;
int peers;
String size;
int sizeBytes;
String dateUploaded;
int dateUploadedUnix;
Torrents(
{this.url,
this.hash,
this.quality,
this.type,
this.seeds,
this.peers,
this.size,
this.sizeBytes,
this.dateUploaded,
this.dateUploadedUnix});
Torrents.fromJson(Map<String, dynamic> json) {
url = json['url'];
hash = json['hash'];
quality = json['quality'];
type = json['type'];
seeds = json['seeds'];
peers = json['peers'];
size = json['size'];
sizeBytes = json['size_bytes'];
dateUploaded = json['date_uploaded'];
dateUploadedUnix = json['date_uploaded_unix'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['url'] = this.url;
data['hash'] = this.hash;
data['quality'] = this.quality;
data['type'] = this.type;
data['seeds'] = this.seeds;
data['peers'] = this.peers;
data['size'] = this.size;
data['size_bytes'] = this.sizeBytes;
data['date_uploaded'] = this.dateUploaded;
data['date_uploaded_unix'] = this.dateUploadedUnix;
return data;
}
}
Any help, please? Tell me if any more info is required?
I'm trying to list all the movies and use them for tabview in flutter which can show them in listview as well as gridview. I'm using Bloc architecture for layouts so YifyMovie class is in hom_model and the code above is in home_provider.

Answer 1

Your YifyMovies class is already handling the parsing for you.
So your code should change from
Future<YifyMovies> getData() async {
var res = await http.get("https://yts.lt/api/v2/list_movies.json");
var decodedJson = jsonDecode(res.body);
YifyMovies movie = YifyMovies();
movie.data.movies = [];
for (var json in decodedJson) {
movie.data.movies.add(Movies.fromJson(json));
}
return movie;
}
to
Future<YifyMovies> getData() async {
var res = await http.get("https://yts.lt/api/v2/list_movies.json");
var decodedJson = jsonDecode(res.body);
YifyMovies movie = YifyMovies.fromJson(decodedJson);
return movie;
}