Ios IOHIDLib和xcode 7上的更多奇怪错误

我将Xcode升级到版本7，突然出现以下错误：

Sep 24 15:44:31  LogoSwift[10211] <Error>: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Sep 24 15:44:31  LogoSwift[10211] <Error>: CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Sep 24 15:44:31  LogoSwift[10211] <Error>: CGContextRestoreGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
2015-09-24 15:44:31.954 LogoSwift[10211:504623] Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
    /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
2015-09-24 15:44:31.955 LogoSwift[10211:504623] Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x7fce1ac309e0 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)
2015-09-24 15:44:31.955 LogoSwift[10211:504623] Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
    /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
2015-09-24 15:44:31.955 LogoSwift[10211:504623] Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x7fce1ac309e0 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)
2015-09-24 15:44:31.956 LogoSwift[10211:504623] Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
    /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
2015-09-24 15:44:31.973 LogoSwift[10211:504623] Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x7fce1ac309e0 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)
2015-09-24 15:44:31.974 LogoSwift[10211:504623] Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
    /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
2015-09-24 15:44:31.975 LogoSwift[10211:504623] Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x7fce1ac309e0 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)

Sep 24 15:44:31 LogoSwift[10211]：CGContextSaveGState:无效上下文0x0。如果要查看回溯，请设置CG_CONTEXT_SHOW_backtrace环境变量。
Sep 24 15:44:31 LogoSwift[10211]：CGContextTranslateCTM:无效上下文0x0。如果要查看回溯，请设置CG_CONTEXT_SHOW_backtrace环境变量。
Sep 24 15:44:31 LogoSwift[10211]：CGContextRestoreGState:无效上下文0x0。如果要查看回溯，请设置CG_CONTEXT_SHOW_backtrace环境变量。
2015-09-24 15:44:31.954 LogoSwift[10211:504623]加载错误/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:dlopen（/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/MacOS/IOHIDLib，262）：未找到合适的图像。确实发现：
/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:mach-o，但不是为iOS模拟器构建的
2015-09-24 15:44:31.955 LogoSwift[10211:504623]在Cbundle/CFPlugIn 0x7fce1ac309e0（捆绑，未加载）中找不到工厂13AA9C44-6F1B-11D4-907C-0005028F18D5的函数指针IOHIDLibFactory
2015-09-24 15:44:31.955 LogoSwift[10211:504623]加载错误/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:dlopen（/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/MacOS/IOHIDLib，262）：找不到合适的图像。确实发现：
/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:mach-o，但不是为iOS模拟器构建的
2015-09-24 15:44:31.955 LogoSwift[10211:504623]在Cbundle/CFPlugIn 0x7fce1ac309e0（捆绑，未加载）中找不到工厂13AA9C44-6F1B-11D4-907C-0005028F18D5的函数指针IOHIDLibFactory
2015-09-24 15:44:31.956 LogoSwift[10211:504623]加载错误/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:dlopen（/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/MacOS/IOHIDLib，262）：找不到合适的图像。确实发现：
/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:mach-o，但不是为iOS模拟器构建的
2015-09-24 15:44:31.973 LogoSwift[10211:504623]在Cbundle/CFPlugIn 0x7fce1ac309e0（捆绑，未加载）中找不到工厂13AA9C44-6F1B-11D4-907C-0005028F18D5的函数指针IOHIDLibFactory
2015-09-24 15:44:31.974 LogoSwift[10211:504623]加载错误/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:dlopen（/System/Library/Extensions/IOHIDLib.kext/Contents/PlugIns/MacOS/IOHIDLib，262）：找不到合适的图像。确实发现：
/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:mach-o，但不是为iOS模拟器构建的
2015-09-24 15:44:31.975 LogoSwift[10211:504623]在Cbundle/CFPlugIn 0x7fce1ac309e0（捆绑，未加载）中找不到工厂13AA9C44-6F1B-11D4-907C-0005028F18D5的函数指针IOHIDLibFactory

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有人见过这个吗？如何修复此问题？

对于前3个错误，请将plist UIViewControllerBasedStatusBarAppearance从“否”更改为“是”，并实现preferredStatusBarStyle:

我猜这是此版本的Xcode（7）的一个Apple错误。Xcode 7.1（.1）解决了此问题。您不再需要更改UIViewControllerBasedStatusBarAppearance设置。