how to use gson 2.0 on - onResponse from Retrofit 2.0

Question

i\'m doing an http call using the new retrofit 2.0, and getting a callback, i want to use gson 2.0 library to parse that json obj and to be able to do

json         


        

Answer 1

Okey i will explain how to convert JSON response to POJO :

First of all you must create a POJO class in : JSON Schema 2 POJO

1. Paste your example JSON response
2. Select Source Type : JSON
3. annotation style : Gson

It will generate a POJO class for you.

Then in your onResponse method :

        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            if(response.code()==200){
            Gson gson = new GsonBuilder().create();
                YourPOJOClass yourpojo=new YourPOJOClass ();
                try {
                    yourpojo= gson.fromJson(response.body().toString(),YourPOJOClass.class); 
                } catch (IOException e) {
                    // handle failure to read error
                    Log.v("gson error","error when gson process");  
                }
        }

Dont forget to add compile 'com.google.code.gson:gson:2.4'

Another way to do this : create a pojo class like in above.

In your API :

@POST("endpoint")
public Call<YourPOJOClass> exampleRequest();

When calling this :

    OkHttpClient okClient = new OkHttpClient.Builder().connectTimeout(10, TimeUnit.SECONDS).build();

    Gson gson = new GsonBuilder()
            .setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
            .create();

    Retrofit client = new Retrofit.Builder()
            .baseUrl(baseUrl)
            .addConverterFactory(GsonConverterFactory.create(gson))
            .client(okClient)
            .build();

    YourApiClass service = client.create(YourApiClass.class);

    Call<YourPOJOClass> call=service.exampleRequest();
    call.enqueue(new Callback<YourPOJOClass>() {
        @Override
        public void onResponse(Call<YourPOJOClass> call, Response<YourPOJOClass> response) {
            //already Gson convertor factory converted your response body to pojo
            response.body().getCurserLocation();
        }

        @Override
        public void onFailure(Call<YourPOJOClass> call, Throwable t) {

        }
    });