Cacher is the code snippet organizer for pro developers

Para que funcionen las llamadas hay que habilitar el proyecto a que acceda a URLs abiertas:
Opened my Projects info.plist file
Added a Key called NSAppTransportSecurity as a Dictionary.
Added a Subkey called NSAllowsArbitraryLoads as Boolean and set its value to YES as like following image.



[MBProgressHUD showHUDAddedTo:self.view animated:YES];

//ENVIAMOS A SEGUNDO PLANO
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

  [[LORestManager sharedInstance] authorizationTokenStepB:self.textFieldEmail.text
                                                 password:self.textFieldPassword.text
                                            returnHandler:^(int messageId, id json) {
    
    //VOLVEMOS A PRIMER PLANO POR SI SE DEBE TOCAR INTERFICIE                                                     
    dispatch_async(dispatch_get_main_queue(), ^{
      if (messageId>=0){
        //OK
      }
      
      [MBProgressHUD hideAllHUDsForView:self.view animated:YES];
    });
  }];
});