“преобразовать JSON в Dart” Ответ

Flutter Access json объект внутри объекта

myJson = {
  "label": "This is a string",
  "value": {
  	"address": "This is a string",
    "country": "This is a string"
  }
}

//to access address field
var decodedJson = json.decode(myJson);
var jsonValue = json.decode(decodedJson['value']);
print(jsonValue['address']);
SeriousMonk

json to String dart

import 'dart:convert';
main() {
  String objText = '{"name": "bezkoder", "age": 30}';
  User user = User.fromJson(jsonDecode(objText));
  print(user);
Mashood Hussain

преобразовать JSON в Dart

class TrendingMoviesModel {
  String? name;
  String? backdropPath;
  List<int>? genreIds;
  String? originalLanguage;
  String? posterPath;
  List<String>? originCountry;
  String? overview;
  String? mediaType;

  TrendingMoviesModel(
      {this.name,
      this.backdropPath,
      this.genreIds,
      this.originalLanguage,
      this.posterPath,
      this.originCountry,
      this.overview,
      this.mediaType});

  TrendingMoviesModel.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    backdropPath = json['backdrop_path'];
    genreIds = json['genre_ids'].cast<int>();
    originalLanguage = json['original_language'];
    posterPath = json['poster_path'];
    originCountry = json['origin_country'].cast<String>();
    overview = json['overview'];
    mediaType = json['media_type'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['backdrop_path'] = this.backdropPath;
    data['genre_ids'] = this.genreIds;
    data['original_language'] = this.originalLanguage;
    data['poster_path'] = this.posterPath;
    data['origin_country'] = this.originCountry;
    data['overview'] = this.overview;
    data['media_type'] = this.mediaType;
    return data;
  }
}
Itchy Iguana

преобразовать JSON в Dart

class NewsDescriptionModel {
  NewsDetail? newsDetail;
  String? editorList;
  List<Tags>? tags;

  NewsDescriptionModel({this.newsDetail, this.editorList, this.tags});

  NewsDescriptionModel.fromJson(Map<String, dynamic> json) {
    newsDetail = json['NewsDetail'] != null
        ? new NewsDetail.fromJson(json['NewsDetail'])
        : null;
    editorList = json['editorList'];
    if (json['tags'] != null) {
      tags = <Tags>[];
      json['tags'].forEach((v) {
        tags!.add(new Tags.fromJson(v));
      });
    }
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    if (this.newsDetail != null) {
      data['NewsDetail'] = this.newsDetail!.toJson();
    }
    data['editorList'] = this.editorList;
    if (this.tags != null) {
      data['tags'] = this.tags!.map((v) => v.toJson()).toList();
    }
    return data;
  }
}

class NewsDetail {
  String? id;
  String? source;
  String? author;
  String? title;
  String? timestamp;
  String? section;
  String? slug;
  String? sectionId;
  String? content;
  String? websiteurl;
  String? thumbnailUrl;
  String? sectionUrl;
  String? url;
  String? newsType;
  String? highlights;
  String? comments;

  NewsDetail(
      {this.id,
      this.source,
      this.author,
      this.title,
      this.timestamp,
      this.section,
      this.slug,
      this.sectionId,
      this.content,
      this.websiteurl,
      this.thumbnailUrl,
      this.sectionUrl,
      this.url,
      this.newsType,
      this.highlights,
      this.comments});

  NewsDetail.fromJson(Map<String, dynamic> json) {
    id = json['id'];
    source = json['source'];
    author = json['author'];
    title = json['title'];
    timestamp = json['timestamp'];
    section = json['section'];
    slug = json['slug'];
    sectionId = json['section_id'];
    content = json['content'];
    websiteurl = json['websiteurl'];
    thumbnailUrl = json['thumbnail_url'];
    sectionUrl = json['section_url'];
    url = json['url'];
    newsType = json['news_type'];
    highlights = json['highlights'];
    comments = json['comments'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['id'] = this.id;
    data['source'] = this.source;
    data['author'] = this.author;
    data['title'] = this.title;
    data['timestamp'] = this.timestamp;
    data['section'] = this.section;
    data['slug'] = this.slug;
    data['section_id'] = this.sectionId;
    data['content'] = this.content;
    data['websiteurl'] = this.websiteurl;
    data['thumbnail_url'] = this.thumbnailUrl;
    data['section_url'] = this.sectionUrl;
    data['url'] = this.url;
    data['news_type'] = this.newsType;
    data['highlights'] = this.highlights;
    data['comments'] = this.comments;
    return data;
  }
}

class Tags {
  String? title;
  int? topicID;
  String? sectionPageURL;

  Tags({this.title, this.topicID, this.sectionPageURL});

  Tags.fromJson(Map<String, dynamic> json) {
    title = json['title'];
    topicID = json['topicID'];
    sectionPageURL = json['sectionPageURL'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['title'] = this.title;
    data['topicID'] = this.topicID;
    data['sectionPageURL'] = this.sectionPageURL;
    return data;
  }
}
Priyanka Bhosale

преобразовать JSON в Dart

class TrendingMoviesModel {
  String? name;
  String? backdropPath;
  List<int>? genreIds;
  String? originalLanguage;
  String? posterPath;
  List<String>? originCountry;
  String? overview;
  String? mediaType;

  TrendingMoviesModel(
      {this.name,
      this.backdropPath,
      this.genreIds,
      this.originalLanguage,
      this.posterPath,
      this.originCountry,
      this.overview,
      this.mediaType});

  TrendingMoviesModel.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    backdropPath = json['backdrop_path'];
    genreIds = json['genre_ids'].cast<int>();
    originalLanguage = json['original_language'];
    posterPath = json['poster_path'];
    originCountry = json['origin_country'].cast<String>();
    overview = json['overview'];
    mediaType = json['media_type'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['backdrop_path'] = this.backdropPath;
    data['genre_ids'] = this.genreIds;
    data['original_language'] = this.originalLanguage;
    data['poster_path'] = this.posterPath;
    data['origin_country'] = this.originCountry;
    data['overview'] = this.overview;
    data['media_type'] = this.mediaType;
    return data;
  }
}
Itchy Iguana

Json to Dart

class Autogenerated {
  String foodOrderOption;
  String foodOrder;

  Autogenerated({this.foodOrderOption, this.foodOrder});

  Autogenerated.fromJson(Map<String, dynamic> json) {
    foodOrderOption = json['foodOrderOption'];
    foodOrder = json['foodOrder'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['foodOrderOption'] = this.foodOrderOption;
    data['foodOrder'] = this.foodOrder;
    return data;
  }
}
Helpless Hoopoe

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