ios - Xcode 添加重复约束？

Question

在代码中我添加了 4 个约束。但是当我在 UI 调试器中运行应用程序时，它显示了额外的 6 个约束？我加的这4条应该都清楚了。我不知道我做错了什么？

let leftConstr   = NSLayoutConstraint(item: image, attribute: .leading, relatedBy: .equal, toItem: cell.contentView, attribute: .leading, multiplier: 1.0, constant: 0.0)
let bottomConstr = NSLayoutConstraint(item: image, attribute: .bottom, relatedBy: .equal, toItem: cell.contentView , attribute: .bottom, multiplier: 1.0, constant: 0.0)
let highthConstr = NSLayoutConstraint(item: image, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 15)
let widthConstr  = NSLayoutConstraint(item: image, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 50)
cell.contentView.addConstraints([highthConstr, widthConstr, bottomConstr, leftConstr])

这是我的 UI 调试器的屏幕截图

Answer 1

也许你可以尝试在之前添加这行代码:

image.translatesAutoresizingMaskIntoConstraints = false