user3075588 user3075588 - 7 days ago 6
JSON Question

Retrofit parse JSON dynamic keys

I'm a newbie in Retrofit and i have a question.

How to parse the Json below using retrofit

{
"data": {
"Aatrox": {
"id": 266,
"title": "a Espada Darkin",
"name": "Aatrox",
"key": "Aatrox"
},
"Thresh": {
"id": 412,
"title": "o GuardiĆ£o das Correntes",
"name": "Thresh",
"key": "Thresh"
}
},
"type":"champion",
"version":"6.23.1"
}


Thanks

Answer

You could make your model POJO contain a Map<String, Champion> to deserialize into, to deal with the dynamic keys.

Example:

public class ChampionData {
    public Map<String, Champion> data;
    public String type;
    public String version;
}

public class Champion {
    public int id;
    public String title;
    public String name;
    public String key;
}

I'm not familiar with Retrofit besides that, but as someone in the comments said, the deserializing is done by Gson:

public ChampionData champions = new Gson().fromJson(json, ChampionData.class);

So to build on to the answer someone else posted, you can then do the following, assuming you've added the GsonConverterFactory:

public interface API {
    @GET("path/to/endpoint")
    Call<ChampionData> getChampionData();
}