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在iOS 5上启动时,应用崩溃

[英]App crashes when starting on iOS 5

Today when testing app on iOS 5, I've found a problem, it crashes on starting. 今天,当在iOS 5上测试应用程序时,我发现了一个问题,它在启动时崩溃了。

dyld: Symbol not found: _OBJC_CLASS_$_UIActivityViewController
  Referenced from: /var/mobile/Applications/6F884421-A676-434B-89E0-598F4F8F277F/HGroupware.app/HGroupware
  Expected in: /System/Library/Frameworks/UIKit.framework/UIKit
 in /var/mobile/Applications/6F884421-A676-434B-89E0-598F4F8F277F/HGroupware.app/HGroupware

So what should I do? 所以我该怎么做? Change deployment target to iOS >= 6.0 or any solution? 将部署目标更改为iOS> = 6.0或任何解决方案? Please help me. 请帮我。

Yes only solution is IOS >=6. 是的,唯一的解决方案是IOS> = 6。 Because UIActivityViewController is only available from IOS6 . 因为UIActivityViewController仅可从IOS6获得 See this apple's doc 看到这个苹果的文档

UIActivityViewController is "Available in iOS 6.0 and later.", so ideally, yes, change deployment target. UIActivityViewController是“在iOS 6.0及更高版本中可用。”因此,理想情况下,是的,更改部署目标。 Or change it on something else in code if [UIActivityViewController class] returns nil. 或者,如果[UIActivityViewController类]返回nil,则在代码中的其他内容上进行更改。

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