Constraints

Swift

public class func active(item view1: Any!,
                  attr attr1: NSLayoutConstraint.Attribute,
                  relatedBy relation: NSLayoutConstraint.Relation,
                  to view2: Any?,
                  attr attr2: NSLayoutConstraint.Attribute,
                  multiplier: CGFloat = 1.0,
                  constant: CGFloat = 0,
                  priority: Float = 1000,
                  identifier: String? = nil)