Add availability check for iOS 8 attributes.

2015-09-14 22:31:55 +09:00 · 2015-09-14 22:31:55 +09:00 · 8e6219ef86
parent 1754ffd536
commit 8e6219ef86
1 changed files with 28 additions and 26 deletions
--- a/Source/ConstraintAttributes.swift
+++ b/Source/ConstraintAttributes.swift
@ -125,6 +125,7 @@ internal struct ConstraintAttributes: OptionSetType, BooleanType {
            attrs.append(.Baseline)
        }
        #if os(iOS)
+        if #available(iOS 8.0, *) {
            if (self.contains(ConstraintAttributes.FirstBaseline)) {
                attrs.append(.FirstBaseline)
            }
@ -152,6 +153,7 @@ internal struct ConstraintAttributes: OptionSetType, BooleanType {
            if (self.contains(ConstraintAttributes.CenterYWithinMargins)) {
                attrs.append(.CenterYWithinMargins)
            }
+        }
        #endif
        return attrs
    }