title: Facebook sdk post on wall on iPhone app
body: <p>I have a problem with implementing Facebook posting on wall in my iPhone application.
  I installed SDK and linked framework
  login is working fine. here's the code:</p>
  
  <pre><code>-(IBAction)loginButtonPressed:(id)sender
  {
      NSLog(@"loginButtonPressed: called");
  
      AppDelegate *appdel=[[UIApplication sharedApplication] delegate];
      appdel.facebookSession=[[FBSession alloc] init];
      [appdel.facebookSession openWithCompletionHandler:^(FBSession *session, 
                                                       FBSessionState status, 
                                                       NSError *error)
      {
          //
      }];
  }
  </code></pre>
  
  <p>But I have a problem with posting message on user's wall. Here's the code:</p>
  
  <pre><code>-(IBAction)likeButtonPressed:(id)sender
  {
      NSLog(@"likeButtonPressed: called");
      // Post a status update to the user's feedm via the Graph API, and display an alert view 
      // with the results or an error.
  
      NSString *message = @"test message";
      NSDictionary *params = [NSDictionary dictionaryWithObject:message forKey:@"message"];
  
      // use the "startWith" helper static on FBRequest to both create and start a request, with
      // a specified completion handler.
      [FBRequest startWithGraphPath:@"me/feed"
                         parameters:params
                         HTTPMethod:@"POST"
                  completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
  
                      [self showAlert:message result:result error:error];
                  }];
  
  }
  </code></pre>
  
  <p>Help me please. What's wrong with my code? Or should I add some permissions to login request?</p>