self.tableView.tableFooterView = [[[NSBundle mainBundle] loadNibNamed:@"addCommentView" owner:self options:nil] objectAtIndex:0];
commentTextField = (UITextField *)[self.tableView.tableFooterView viewWithTag:1];
commentTextField.delegate = self;

UIButton *sendButton = (UIButton *)[self.tableView.tableFooterView viewWithTag:2];
[sendButton addTarget:self action:@selector(doSendComment:) forControlEvents:UIControlEventTouchUpInside];