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解析嵌套的JSON数组并使用Dart语言将其放入Model类中

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关于我的问题here

我想在JSON数组中解析没有键的JSON数组，并将其放在Model类中 .

这是我要解析的JSON数组 .

[
    {
        "pk": 100,
        "user": 5,
        "name": "Flutter",
        "details": "Fluttery",
        "images": [
            89,
            88,
            87,
            86
        ],
        "priority": 5
    },
    {
        "pk": 99,
        "user": 5,
        "name": "",
        "details": "h",
        "images": [],
        "priority": 5
    },
    {
        "pk": 98,
        "user": 5,
        "name": "Flutter",
        "details": "Fluttery",
        "images": [
            85
        ],
        "priority": 5
    },
]

我已成功解析主数组，但我无法解析包含整数数组的 images 键 . 我想把它放到Model类中 . 请帮忙 .

谢谢！

arrays json parsing dart flutter

2 回答

  • 2

    你能参考 Serializing JSON manually using dart:convert section here . 如果您仍然面临问题，请发布错误/困难 .

    回复于
  • 0

    你可以这样做：

    final jsonList = json.decode(response.body) as List;
    final userList = jsonList.map((map) => User.fromJson(map)).toList();

    用户类

    class User {
          final int pk;
          final String name;
          final List<int> images;

          User._({this.pk, this.name, this.images});

          factory User.fromJson(Map<String, dynamic> json) {
            return new User._(
                pk: json['pk'],
                name: json['name'],
                images:  (json['images'] as List).map((map) => int.parse("$map")).toList());
          }
        }

    Print your data

    for (var i = 0; i < userList.length; i++) { 
       print(userList[i].name);
       final imageList = userList[i].images;
       for (var j = 0 ; j < imageList.length; j++){
          print("image: ${imageList[j]}");
       }

    }
    回复于

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