使用可视格式语言的UIButtons之间的相等间距

我有一堆UIButtons，我想在容器视图中均匀分隔，现在我对间距有这个约束：

someView.addConstraints（NSLayoutConstraint.constraintsWithVisualFormat（“H：| – （> = 0） – [M] – （> = 0） – [T] – （> = 0） – [W] – （> = 0） – [ T] – （> = 0） – [F] – （> = 0） – [S] – （> = 0） – [S] – （> = 0） – |“，选项：NSLayoutFormatOptions.AlignAllCenterY，指标：零，意见：buttonsArray））

但是这会使按钮看起来像这样：

问题是我想要的间距是这样计算的：

spacing =（someView.frame.width – （someView.frame.height * 0.6）* 7）/ 8

someView.frame.height * 0.6是按钮的边长。 我不知道该怎么做。

Answer 1

这是一个简单的代码，它确实在视图中按钮之间分配空格，我希望这可以帮助你找出你的用例，

  let containerView = UIView(frame: CGRect.zero) containerView.translatesAutoresizingMaskIntoConstraints = false view.addSubview(containerView) let M = UIButton(type: .System) M.translatesAutoresizingMaskIntoConstraints = false M.backgroundColor = UIColor.lightGrayColor() M.setTitle("M", forState: .Normal) containerView.addSubview(M) let T = UIButton(type: .System) T.translatesAutoresizingMaskIntoConstraints = false T.setTitle("T", forState: .Normal) T.backgroundColor = UIColor.lightGrayColor() containerView.addSubview(T) let W = UIButton(type: .System) W.translatesAutoresizingMaskIntoConstraints = false W.setTitle("W", forState: .Normal) W.backgroundColor = UIColor.lightGrayColor() containerView.addSubview(W) let Th = UIButton(type: .System) Th.translatesAutoresizingMaskIntoConstraints = false Th.setTitle("T", forState: .Normal) Th.backgroundColor = UIColor.lightGrayColor() containerView.addSubview(Th) let F = UIButton(type: .System) F.translatesAutoresizingMaskIntoConstraints = false F.setTitle("F", forState: .Normal) F.backgroundColor = UIColor.lightGrayColor() containerView.addSubview(F) let S = UIButton(type: .System) S.translatesAutoresizingMaskIntoConstraints = false S.setTitle("S", forState: .Normal) S.backgroundColor = UIColor.lightGrayColor() containerView.addSubview(S) let Su = UIButton(type: .System) Su.translatesAutoresizingMaskIntoConstraints = false Su.setTitle("Su", forState: .Normal) Su.backgroundColor = UIColor.lightGrayColor() containerView.addSubview(Su) let views = [ "M": M, "T": T, "W": W, "Th":Th, "F": F, "S": S, "Su": Su ] let horizontalSpacing = 20 let cornerMargin = 30 let metrics = [ "horizontalSpacing": horizontalSpacing, "cornerMargin": cornerMargin ] views.values.forEach { view in view.clipsToBounds = true view.layer.cornerRadius = 10 } let verticalCenter = NSLayoutConstraint(item: containerView, attribute: .CenterY, relatedBy: .Equal, toItem: view, attribute: .CenterY, multiplier: 1.0, constant: 0) let horizontalCenter = NSLayoutConstraint(item: containerView, attribute: .CenterX, relatedBy: .Equal, toItem: view, attribute: .CenterX, multiplier: 1.0, constant: 0) view.addConstraint(verticalCenter) view.addConstraint(horizontalCenter) let horizontalFormat = "H:|-(==cornerMargin)-[M]-horizontalSpacing-[T]-horizontalSpacing-[W]-horizontalSpacing-[Th]-horizontalSpacing-[F]-horizontalSpacing-[S]-horizontalSpacing-[Su]-(==cornerMargin)-|" let horizontalConstraints = NSLayoutConstraint.constraintsWithVisualFormat(horizontalFormat, options: .AlignAllCenterY, metrics: metrics, views: views) view.addConstraints(horizontalConstraints) let verticalFormat = "V:|-[M]-|" let verticalConstraints = NSLayoutConstraint.constraintsWithVisualFormat(verticalFormat, options: .AlignAllCenterY, metrics: metrics, views: views) view.addConstraints(verticalConstraints) 

而且，结果如下，