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下面演示了在约束字符串中使用变量的正确方法吗?你如何在NSLayoutConstraint字符串中加入一个变量?
let x = 6
self.addConstraints(
NSLayoutConstraint.constraintsWithVisualFormat(
"H:|-x-[subView(==16)]|",
options:[], metrics:nil,
views:viewDictionary))
self.addConstraints(
NSLayoutConstraint.constraintsWithVisualFormat(
"V:|-x-[subView(==16)]|",
options:[], metrics:nil,
views:viewDictionary))