Swift UIStackView：以编程方式从中心定位元素.

这是我想要的效果：

如您所见,我希望两个文本字段彼此间隔相等,并在堆栈视图中对齐中心.

这个堆栈视图将包含我需要排列的1-7个文本字段.

以下是目前的情况：

这就是我设置文本字段的方式

let textLabel = UILabel()
textLabel.backgroundColor = UIColor.red
textLabel.widthAnchor.constraint(equalToConstant: 40.0).isActive = true
textLabel.heightAnchor.constraint(equalToConstant: 20.0).isActive = true
textLabel.text  = "Hi"
textLabel.textAlignment = .center

let textLabel1 = UILabel()
textLabel1.backgroundColor = UIColor.red
textLabel1.widthAnchor.constraint(equalToConstant: 40.0).isActive = true
textLabel1.heightAnchor.constraint(equalToConstant: 20.0).isActive = true
textLabel1.text  = "Hi"
textLabel1.textAlignment = .center

我正在生成堆栈视图,如下所示：

//Stack View
let stackView   = UIStackView()
stackView.axis  = UILayoutConstraintAxis.horizontal
stackView.distribution  = UIStackViewDistribution.equalCentering
stackView.alignment = UIStackViewAlignment.fill
stackView.spacing   = 16.0

stackView.addArrangedSubview(textLabel)
stackView.addArrangedSubview(textLabel1)
stackView.translatesAutoresizingMaskIntoConstraints = false;

self.view.addSubview(stackView)

//Constraints

stackView.leftAnchor.constraint(equalTo: self.view.leftAnchor,constant: 50).isActive = true
stackView.rightAnchor.constraint(equalTo: self.view.rightAnchor,constant: -50).isActive = true
stackView.topAnchor.constraint(equalTo: self.view.topAnchor,constant: 100).isActive = true

如何将元素放入对齐中心？

我以为是的

UIStackViewDistribution.equalCentering

然而,这并没有做太多.

感谢你的时间:)