Authentication error: Unable to respond to any of these challenges: {} Android - 401 Unauthorized

Question

Authentication error: Unable to respond to any of these challenges: {} Android - 401 Unauthorized

I have taken reference from this link Authentication Error when usi

Answer 1

I was running into the same "DefaultRequestDirector: Authentication error: Unable to respond to any of these challenges: {}" problem with Drupal services using the loopj android-async-http library (highly recommend it).

The key to the solution for me was in Jose L Ugia's comment in one of the answers regarding paying special attention to the JSON output from Drupal. I was trying to catch a JSONObject but the real message was in array format "["Wrong username or password."]". Switching to JSONArray caught the error properly and allowed me to handle it. In your case I believe it is because you are not posting the login credentials as drupal services expects it.

You should remember with Drupal Services you should do system/connect and grab the session, followed by user/login (and the user/password passed in as parameters) and grab the session and then all your subsequent requests should work. This is why I like using the loopj library because it makes all these requests more manageable. Here is a very basic example of connecting to drupal with loopj. All subsequent posts are easily done using the params.

public class Loopj {
  private static final String TAG = "loopj";

  private static AsyncHttpClient client = new AsyncHttpClient();
  private final PersistentCookieStore myCookieStore;


  public Loopj(Context context) {
    myCookieStore = new PersistentCookieStore(context);
    client.setCookieStore(myCookieStore);
    client.addHeader("Content-type", "application/json");
  }


  public void systemConnect(String uri) throws JSONException {
    client.post(uri + "/endpoint/system/connect", new JsonHttpResponseHandler() {
      @Override
      public void onSuccess(JSONObject json) {
        Log.i("TAG", "Connect success =" + json.toString());
      }

      @Override
      public void onFailure(Throwable e, String response) {
        Log.e("TAG", "Connect failure");
      }
    });
  }

  public void userLogin(String uri) throws JSONException {
    RequestParams params = new RequestParams();
    params.put("username", username);
    params.put("password", password);
    client.post(uri + "/endpoint/user/login", params, new JsonHttpResponseHandler() {
      @Override
      public void onSuccess(JSONArray response) {
        Log.i("TAG", "Login success =" + response.toString());
      }

      @Override
      public void onFailure(Throwable e, JSONArray json) {
        Log.e("TAG", "Login failure");
      }
    });
  }