Swift Eureka：表单标题位于NavigationBar下面

Question

我从tableView调用了performSegue并将其推送到FormVC。但是，我的标题位于navigationBar下面，尽管UIView在y轴上偏移了100磅。

我的代码如下：

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "EventsDetails" {
            let destVC = segue.destination as! EventsDetailsViewController
        }
    }

class EventsDetailsViewController: FormViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        form +++
            Section(){ section in
                section.header = {
                    var header = HeaderFooterView<UIView>(.callback({
                        let view = UIView(frame: CGRect(x: 0, y: 100, width: 100, height: 180))
                        let imageView = UIImageView(frame: CGRect(x: 20, y: 10, width: 80, height: 80))
                        imageView.backgroundColor = .red
                        imageView.layer.cornerRadius = imageView.frame.size.width / 2
                        imageView.clipsToBounds = true

                        let nameLabel = UILabel(frame: CGRect(x: 120, y: 40, width: 150, height: 20))
                        nameLabel.text = "Test Text"
                        nameLabel.backgroundColor = .blue
                        nameLabel.font = UIFont.boldSystemFont(ofSize: 18.0)

                        view.addSubview(imageView)
                        view.addSubview(nameLabel)
                        view.backgroundColor = .white
                        return view
                    }))
                    header.height = { 200 }
                    return header
                }()
        }

    }

}

有没有办法将视图向下移动到navBar的底部？顺便说一下，我使用故事板。我知道这可能是一个原始问题，但是非常感谢一些建议，谢谢！