title: IOS development Facebook live, why can only get to live comment id, no direct access to comment on people's nickname
body: <p>NSString *path = [NSString stringWithFormat:@"/%@/comments",liveId];
      FBSDKGraphRequest *request =  [[FBSDKGraphRequest alloc] initWithGraphPath:path parameters:@{@"fields" : @"attachment_id,attachment_share_url,attachment_url,is_offline,message,text"}];
      NSMutableArray *mArr = [NSMutableArray array];
      [request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
          if (!error) {</p>
  
  <pre><code>        if (result) {
              NSArray *arr = [result objectForKey:@"data"];
              for (NSDictionary *dic in arr) {
                  EVOLiveItem *commentItem = [[EVOLiveItem alloc] init];
                  commentItem.commentItem.userName = dic[@"id"];
                  commentItem.commentItem.commentContent = dic[@"message"];
                  [mArr addObject:commentItem];
              }
               completion(mArr);
          }
  </code></pre>