ios - 5.0之前的iOS版本上的用户定义的运行时属性

Question

我有一个现有的iOS项目正在维护，需要升级到最新的Urban Airship SDK(5.0.2)。该项目使用CocoaPods，因此在pod 'UrbanAirship-iOS-SDK', '~> 5.0.2'中下拉最新版本就像Podfile一样简单，但是现在在构建时，出现以下编译错误:

/* com.apple.ibtool.document.errors */
/%PATH%/Pods/UrbanAirship-iOS-SDK/Airship/UI/Default/Inbox/Resources/Shared/UAInboxMessageListCell.xib:3: error: User defined runtime attributes on iOS versions prior to 5.0 [6]
/%PATH%/Pods/UrbanAirship-iOS-SDK/Airship/UI/Default/Inbox/Resources/Shared/UAInboxMessageListCell.xib:ihY-21-382: error: User defined runtime attributes on iOS versions prior to 5.0 [6]
/%PATH%/Pods/UrbanAirship-iOS-SDK/Airship/UI/Default/Inbox/Resources/Shared/UAInboxMessageListCell.xib:10: error: User defined runtime attributes on iOS versions prior to 5.0 [6]
/%PATH%/Pods/UrbanAirship-iOS-SDK/Airship/UI/Default/Inbox/Resources/Shared/UAInboxMessageListCell.xib:20: error: User defined runtime attributes on iOS versions prior to 5.0 [6]
/%PATH%/Pods/UrbanAirship-iOS-SDK/Airship/UI/Default/Inbox/Resources/Shared/UAInboxMessageListCell.xib:wDW-QM-5ha: error: User defined runtime attributes on iOS versions prior to 5.0 [6]
/%PATH%/Pods/UrbanAirship-iOS-SDK/Airship/UI/Default/Inbox/Resources/Shared/UAInboxMessageListCell.xib:9: error: User defined runtime attributes on iOS versions prior to 5.0 [6]

在我看来，这不是Urban Airship的问题，而是针对5.0之前的版本的Pods项目，这很奇怪，因为运行iOS SDK 8.0的部署目标设置为7.0(在实际项目和Pods上均是如此)( Xcode 6.0.1)，因此不确定5.0之前的版本来自哪里。

任何想法/解决方案，即使是部分的，也将不胜感激。

Answer 1

打开UAInboxMessageListCell.xib文件，然后单击文件检查器，将build for更改为iOS 5.0.2或更高版本。