Android : Symfony2 + FosUserBudle + Android login

I'm new in Symfony2 and android and I am trying to create an application in android to connect to my app in Symfony2, I am using FOSUserBundle but I can not work, the problem is with the request for android because when I try via url works perfectly

browser via http: //IP/testapi/web/app_dev.php/api/v1/login.json username = admin & password = adminpassword?

and then a http: //IP/testapi/web/app_dev.php/api/admin/v1/blog/4.json

Works perfect !!

With android:

The login "works" but when I ask for blog route doesn't work, but if I delete the line "- {Path: ^ / api / admin / v1 /, role: ROLE_ADMIN}", works perfect on both sides (Android and browser)

Symfony2 code

Security.yml

firewalls:
    main:
        pattern: ^/
        form_login:
            provider: fos_userbundle
            csrf_provider: form.csrf_provider
            use_forward: false
            use_referer: true
            login_path: /
            check_path: /login_check
            always_use_default_target_path: false
            default_target_path: /
        logout:       true
        anonymous:    true
    api_main:
        pattern: ^/api/admin/v1/
        anonymous: false
        form_login: false
        stateless: true           
        provider: fos_userbundle
        http_basic:
            realm: "REST Service Realm"

access_control:
    - { path: ^/login$, role: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/register, role: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/resetting, role: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/admin, role: ROLE_ADMIN }
    - { path: ^/api/admin/v1/, role: ROLE_ADMIN }

Login Api

public function getLoginAction(Request $request, ParamFetcherInterface $paramFetcher)
{
    $username = $paramFetcher->get('username');
    $password = $paramFetcher->get('password');
    $user_manager = $this->get('fos_user.user_manager');
    $factory = $this->get('security.encoder_factory');

    $user = $user_manager->loadUserByUsername($username);

    if ($user){
        $encoder = $factory->getEncoder($user);

        $valid = ($encoder->isPasswordValid($user->getPassword(),$password,$user->getSalt())) ? true : false;
        if ($valid){
            $token = new UsernamePasswordToken($user, null, 'main', $user->getRoles());
            $this->container->get('security.context')->setToken($token);

        }

        return array('id' => $user->getId(), 'username' => $user->getUserName(), 'logged' => $valid);
    }else{
        return array('username' => '', 'id' => 0, 'logged' => false);
    }
}

Android Code (It's wrong but it is only for testing)

public class MainActivity extends ActionBarActivity {

@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //developer mode, don't publish this code in release mode.
    StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
            .detectDiskReads()
            .detectDiskWrites()
            .detectNetwork()   // or .detectAll() for all detectable problems
            .penaltyLog()
            .build());
    StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
            .detectLeakedSqlLiteObjects()
            .detectLeakedClosableObjects()
            .penaltyLog()
            .penaltyDeath()
            .build());

    ObjectMapper mapper = new ObjectMapper();
    try {
        URL url = new URL("http://IP/testapi/web/app_dev.php/api/v1/login.json?username=admin&password=adminpassword");
        User user = mapper.readValue(url, User.class);
        Log.d("TESTAPI",user.getUsername());
        URL url_blog = new URL("http://IP/testapi/web/app_dev.php/api/admin/v1/blog/4.json");
        Blog blog = mapper.readValue(url_blog, Blog.class);
        Log.d("TESTAPI",blog.getCliente());
    }catch (JsonParseException e) {
        Log.e("TESTAPI",Log.getStackTraceString(e)); 
    } catch (JsonMappingException e) {
        Log.e("TESTAPI",Log.getStackTraceString(e));
    } catch (IOException e) {
        Log.e("TESTAPI",Log.getStackTraceString(e));
    }

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}