java - 如何在 Android 中通过改造访问 JSON 响应中的特定值？

Question

我有一个来自 marvel api 的 JSON 响应，我可以从中获取第一级的版权信息，这是对服务的响应:

{
    "code": 200,
    "status": "Ok",
    "copyright": "© 2019 MARVEL",
    "attributionText": "Data provided by Marvel. © 2019 MARVEL",
    "attributionHTML": "<a href=\"http://marvel.com\">Data provided by Marvel. © 2019 MARVEL</a>",
    "etag": "a1d8666dc86abda3bd2edf99d09446da82626c4b",
    "data": {
        "offset": 0,
        "limit": 20,
        "total": 1,
        "count": 1,
        "results": [
            {
                "id": 1009664,
                "name": "Thor",
                "description": "As the Norse God of thunder and lightning, Thor wields one of the greatest weapons ever made, the enchanted hammer Mjolnir. While others have described Thor as an over-muscled, oafish imbecile, he's quite smart and compassionate.  He's self-assured, and he would never, ever stop fighting for a worthwhile cause.",
.
.
.
}

我有这样的 getter 和 setter:

private int id;
    private String name;
    private String description;
    private String thumbnail;

    private String copyright;

    public Heroe() {}


    public Heroe(String copyright, int id, String name, String description, String thumbnail) {
        this.copyright = copyright;
        this.id = id;
        this.name = name;
        this.description = description;
        this.thumbnail = thumbnail;
    }

但我想从数据中得到结果。要获取 ID、名称和描述，这是我的代码:

Android response service from MARVEL

Answer 1

由于 json 响应有一个子节点尝试创建一个自定义响应，如

HeroResponse.java

class HeroResponse {
    private int code;
    private String status;
    //.. other variables
    @SerializedName("data")
    private Hero data

    //.. Getter and setter
}

Hero.java

class Hero {
    private int offset;
    private int limit;
    //.. other variables
    @SerializedName("results")
    private HeroDetail results

    //.. Getter and setter
}

HeroDetail.java

class HeroDetail {
    private int id;
    private String name;
    private String description

    //.. Getter and setter
}

然后在你的 retrofit 电话上

heroeCall.enqueue(
  //..
  public void onResponse(Call<HeroResponse> call, Response<HeroResponse> response)  {
     HeroResponse resp = response.body();
     resp.copyright
     resp.data.offset
     resp.data.results.id
  }
)

另外，如果您想使用注释 SerializedName，请不要忘记在您的应用程序 build.gradle 中实现 'com.google.code.gson:gson:2.8.5'

希望这会有所帮助。