更新到Swift 2.0后的Autolayout问题
[英]Autolayout issue after updating to Swift 2.0
问题描述
After downloading Xcode 7.0 and migrating to Swift 2.0, i am getting the following error. 
下载Xcode 7.0并迁移到Swift 2.0后，我收到以下错误。
Attempt to add this NSLayoutConstraint to an engine in which it already exists. 尝试将此NSLayoutConstraint添加到已存在的引擎中。 This can cause engine corruption. 这可能会导致引擎损坏。 Break on void _NSLayoutConstraintRedundantAdd() to debug. 打破void _NSLayoutConstraintRedundantAdd（）进行调试。 This will be logged only once. 这将只记录一次。 This may break in the future. 这可能在将来破裂。
1 个解决方案
解决方案1
0 2015-08-30 11:44:15
Seems that for few people it got fixed by updating to Xcode 7 beta 5 似乎很少有人通过更新到Xcode 7 beta 5来修复它
https://forums.developer.apple.com/thread/11909 https://forums.developer.apple.com/thread/11909
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