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iphone - 应用程式可在iOS 6上运作,但无法在iOS 5上运作

转载 作者:行者123 更新时间:2023-12-01 17:42:46 25 4
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Possible Duplicate:
presentViewController: crash on iOS <6 (AutoLayout)
How to use NSLayoutConstraint in iOS 6?
App failing to load


我刚刚开始在iOS6 SDK中开发一个应用程序,它在iOS 6设备和iOS 6 Simulator上可以流畅运行,但在iOS 5或iOS 5 Simulator上不起作用。我已将部署目标设置为:5.0

这是尝试打开但失败时给我的错误...

2013-01-02 14:22:57.075 MyApp[34956:c07] *** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named NSLayoutConstraint'
*** First throw call stack:
(0x14a5052 0xea5d0a 0x144da78 0x144d9e9 0x3327d7 0x3329af 0x3326b7 0x23336d 0xdae2c 0xdb3a9 0xdb5cb 0x3ba73 0x3bce2 0x3bea8 0x42d9a 0x2845 0x139d6 0x148a6 0x23743 0x241f8 0x17aa9 0x138ffa9 0x14791c5 0x13de022 0x13dc90a 0x13dbdb4 0x13dbccb 0x142a7 0x15a9b 0x257d 0x24a5)
terminate called throwing an exception(lldb)

我怎样才能解决这个问题?

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