使用swift在UiStackview中设置UiLabel的高度

Question

我在 UiStackview 中动态添加视图。由于 UiStackview 不是常规视图，因此我无法为其添加底部边框。这就是为什么我计划在它的末尾添加一个 UILabel

我将在 UIStackview 末尾添加的标签将被视为边框。我正在考虑将其高度设为 1 点。并给它一个背景颜色。并将其高度扩展到屏幕的整个宽度。

但它的高度没有得到控制。谁能告诉我是什么问题？

这里是小代码sn-p

let label = UILabel(frame: CGRect(x: 0, y: 0, width: 10, height: 1))
            label.backgroundColor = UIColor.black
            label.text = ""


            bottomBorder.addArrangedSubview(label)

我在主堆栈视图的末尾添加了这个。它被添加到主堆栈视图中，但我认为高度为 30 点。或者可能是 UiLabel 的默认高度

我的问题是：

1. 如何在stackview末尾添加UiLabel或边框（垂直对齐）
2. 有什么方法可以直接给我的stackview添加边框吗？四边边框或至少底部边框？

Answer 1

您有 2 种选择来实现这一目标：

1- 将 stackview 放入 UIView parentView

2- 不要将UILabel 直接添加到UIStackView，将UILabel 添加到UIView 然后将UIView 添加到UIStackView，这样您就可以将任何您想要的分隔符添加到@ 987654332@.

执行此操作的代码：

override func viewDidLoad()
    {
        super.viewDidLoad()
        stackView.distribution = .fillEqually

        let v1 = getViewForStackView(lblText: "lbl1")
        let v2 = getViewForStackView(lblText: "lbl2")

        stackView.addArrangedSubview(v1)
        stackView.addArrangedSubview(v2)
    }


    func getViewForStackView(lblText:String)->UIView
    {
        let rectView = CGRect(x: 0, y: 0, width: 100, height: 100)
        let view = UIView(frame: rectView)
        view.backgroundColor = .green
        let label = UILabel()
        label.text = lblText
        label.backgroundColor = .red
        addFillingSubview(parentView: view, subview: label, insets: UIEdgeInsets(top: 8, left: 8, bottom: 8, right: 8))
        return view
    }

    func addFillingSubview(parentView:UIView, subview: UIView, insets: UIEdgeInsets = .zero)
    {
        subview.translatesAutoresizingMaskIntoConstraints = false
        parentView.addSubview(subview)

        let views = ["subview": subview]
        let metrics = ["top": insets.top, "left": insets.left, "bottom": insets.bottom, "right": insets.right]

        parentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "|-(left)-[subview]-(right)-|", options: [], metrics: metrics, views: views))
        parentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|-(top)-[subview]-(bottom)-|", options: [], metrics: metrics, views: views))
    }

输出：

Answer 2

使用这个类

class BorderedStackView: UIStackView {
    let borderWidth : Int = 2
    let borderColor : UIColor = UIColor.darkGray;
    var borderView : UIView!


    required init(coder: NSCoder) {
        super.init(coder: coder);
        initializeSubviews();
    }

    required override init(frame: CGRect) {
        super.init(frame: frame);
        initializeSubviews();
    }

    func initializeSubviews() {
        borderView = UIView.init();
        borderView.backgroundColor = UIColor.black;
        self.addSubview(borderView);
    }

    override func layoutSubviews() {
        super.layoutSubviews();

        var frame = self.bounds;
        frame.origin.y = frame.size.height - CGFloat.init(borderWidth)
        frame.size.height = CGFloat.init(borderWidth);
        self.borderView.frame = frame;
        self.bringSubview(toFront: self.borderView)
    }
}

用途：

    let stackView = BorderedStackView.init(frame: CGRect.init(x: 50, y: 50, width: 200, height: 200));
    stackView.axis = .vertical
    stackView.borderWidth = 20;
    stackView.borderColor = .red;
    self.view.addSubview(stackView);

    let subView1 = UIView.init(frame: CGRect.init(x: 0, y: 0, width: 200, height: 100));
    subView1.backgroundColor = UIColor.red;
    stackView.addSubview(subView1);

    let subView2 = UIView.init(frame: CGRect.init(x: 0, y: 100, width: 200, height: 100));
    subView2.backgroundColor = UIColor.black;
    stackView.addSubview(subView2);