Parse A Nested Json With Retrofit 2.0

i have this json's and i want to use retrofit for parsing them. { 'status': 'true', 'data': [ { 'id': '1', 'title': 'Hi :)', 'text': '

121212

', 'cat_

Solution 1:

Root node of your json is not array, but you declared it as List<responseStatus> at interface getPost. So you need to use responseStatus instead current one. And use gettter to access data

@SerializedName("data")private ArrayList<retroPost> data;

which is array

Solution 2:

I see many people face this issue so I post my own way with Retrofit here is what I've done it's so simple and clean :

create ServiceHelper Class :

publicclassServiceHelper {

privatestaticfinalStringENDPOINT="http://test.com";

privatestaticOkHttpClienthttpClient=newOkHttpClient();
privatestaticServiceHelperinstance=newServiceHelper();
private IPlusService service;


privateServiceHelper() {

    Retrofitretrofit= createAdapter().build();
    service = retrofit.create(IPlusService.class);
}

publicstatic ServiceHelper getInstance() {
    return instance;
}

private Retrofit.Builder createAdapter() {

    httpClient.setReadTimeout(60, TimeUnit.SECONDS);
    httpClient.setConnectTimeout(60, TimeUnit.SECONDS);
    HttpLoggingInterceptorinterceptor=newHttpLoggingInterceptor();
    interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
    httpClient.interceptors().add(interceptor);

    returnnewRetrofit.Builder()
            .baseUrl(ENDPOINT)
            .client(httpClient)
            .addConverterFactory(GsonConverterFactory.create());
}

public Call<List<CategoryModel>> getAllCategory() {
    return service.getAllCategory();
}

}

Then create your Service class in my Case it's IPlusService

publicinterfaceIPlusService {

    @GET("/api/category")
    Call<List<CategoryModel>> getAllCategory();
}

Now in your Fragment/Activity class you call your own method with something like this :

ServiceHelper.getInstance().getAllCategory().enqueue(newCallback<List<CategoryModel>>() {
        @OverridepublicvoidonResponse(Response<List<CategoryModel>> response, Retrofit retrofit) {
            processResponse(response);
        }

        @OverridepublicvoidonFailure(Throwable t) {
            processResponse(null);
        }
    });

Also add following dependency to your gradle :

dependencies {

      compile'com.squareup.retrofit:retrofit:2.0.0-beta2'compile'com.squareup.retrofit:converter-gson:2.0.0-beta2'compile'com.squareup.okhttp:logging-interceptor:2.6.0'

}