Making API call using retrofit 2 in android

Question

I am trying to make an API call using retrofit 2 in android for a given link. I am very new to making API calls.

Can someone help me with, from where should I start?

Answer 1

Check out an article like this, https://www.vogella.com/tutorials/Retrofit/article.html .

Overall, Retrofit is very straight forward once you get the hang of it.

All you really need to do is create an interface for your API call and create a model for the response.

public interface GerritAPI {

    @GET("changes/")
    Call<List<Change>> loadChanges(@Query("q") String status);
}

And then call the API using the Retrofit client.

    Gson gson = new GsonBuilder()
            .setLenient()
            .create();

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(BASE_URL)
            .addConverterFactory(GsonConverterFactory.create(gson))
            .build();

    GerritAPI gerritAPI = retrofit.create(GerritAPI.class);

    Call<List<Change>> call = gerritAPI.loadChanges("status:open");
    call.enqueue(this);