Get nested JSON object with GSON using retrofit

Question

I\'m consuming an API from my android app, and all the JSON responses are like this:

{
    \'status\': \'OK\',
    \'reason\': \'Everything was fine\',
    \         


        

Answer 1

Bit late but hopefully this will help someone.

Just create following TypeAdapterFactory.

    public class ItemTypeAdapterFactory implements TypeAdapterFactory {

      public  TypeAdapter create(Gson gson, final TypeToken type) {

        final TypeAdapter delegate = gson.getDelegateAdapter(this, type);
        final TypeAdapter elementAdapter = gson.getAdapter(JsonElement.class);

        return new TypeAdapter() {

            public void write(JsonWriter out, T value) throws IOException {
                delegate.write(out, value);
            }

            public T read(JsonReader in) throws IOException {

                JsonElement jsonElement = elementAdapter.read(in);
                if (jsonElement.isJsonObject()) {
                    JsonObject jsonObject = jsonElement.getAsJsonObject();
                    if (jsonObject.has("content")) {
                        jsonElement = jsonObject.get("content");
                    }
                }

                return delegate.fromJsonTree(jsonElement);
            }
        }.nullSafe();
    }
}

and add it into your GSON builder :

.registerTypeAdapterFactory(new ItemTypeAdapterFactory());

or

 yourGsonBuilder.registerTypeAdapterFactory(new ItemTypeAdapterFactory());