Could not instantiate class named NSLayoutConstraint

如果使用Xcode 4.5来新建项目,默认是支持AutoLayout的,但是AutoLayout是iOS 6的新特性,如果在iOS 5的simulator上运行程序,会出现Could not instantiate class named NSLayoutConstraint问题。解决方法是打开storyboard文件,去掉AutoLayout的选择。

转自:http://www.cnblogs.com/procoder/archive/2013/01/13/Could-not-instantiate-class-named-NSLayoutConstraint.html

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转载自zxuenet.iteye.com/blog/1914758