Google Contacts API: Guia Completo e Avançado

// Java exemplo usando Retrofit

import retrofit.Call;
import retrofit.http.GET;

public interface ApiService {

   @GET("https://people.googleapis.com/v1/people/me/connections")
   Call<String> getContacts();
}

// Configuração do Retrofit
Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("https://people.googleapis.com/")
        .build();
ApiService service = retrofit.create(ApiService.class);
Call<String> call = service.getContacts();
call.enqueue(new Callback<String>() {
   @Override
   public void onResponse(Call<String> call, Response<String> response) {
       System.out.println(response.body());
   }
   @Override
   public void onFailure(Call<String> call, Throwable t) {
       t.printStackTrace();
   }
});

# Python exemplo usando requests
import requests
from oauth2client.client import flow_from_clientsecrets
from oauth2client.file import Storage
from oauth2client.tools import run_flow

CLIENT_SECRET = 'path/to/client_secret.json'
SCOPES = ['https://www.googleapis.com/auth/contacts.readonly']
REDIRECT_URI = 'urn:ietf:wg:oauth:2.0:oob'

def main():
    flow = flow_from_clientsecrets(CLIENT_SECRET, scope=SCOPES)
    storage = Storage('credentials.json')
    credentials = run_flow(flow, storage)

    headers = {'Authorization': 'Bearer ' + credentials.access_token}
    resp = requests.get('https://people.googleapis.com/v1/people/me/connections', headers=headers)
    print(resp.json())
if __name__ == '__main__':
    main()