Some sort of “global” for IBDesignables?

Question

In storyboard have a UIView, with a constraint for example \"0.1\" proportional height.

Imagine you have a similar constraint \"0.1\", on views in many different sce

Answer 1

I haven't tried it, and this is just typed in here so excuse typos, but I would consider creating an extension on NSLayoutConstraint, something along the lines of:

let constants = [
    "bannerHeight" : CGFloat(50)
]

extension NSLayoutConstraint {
func setCommonConstant(name: String) {
    self.constant = constants[name]!
}
}

and then using the user defined runtime attributes in Xcode so specify the name to use:

commonConstant, type String, value name

So, like this, on each Constraint anywhere in the storyboard: