我正在使用XCode6 beta并试用Swift.当我在视图控制器中放置一些自动布局约束时,应用程序崩溃并出现以下错误: Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named IBNSLayoutConstraint'
Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named IBNSLayoutConstraint'
objective-c interface-builder ios swift
interface-builder ×1
ios ×1
objective-c ×1
swift ×1