xamarin - 执行 native 代码时出现 SIGABRT xamarin.ios

Question

我已经构建了一个 xamarin.ios 应用程序。该应用程序一直运行良好。没有任何代码更改，而且出乎意料的是，该应用程序现在在访问相机时崩溃。我不知道为什么会发生这种情况，有人可以对这个问题有所了解吗？我已经围绕这个错误用谷歌搜索并尝试了各种方法，包括删除各种软件包。我最近更新到 ios 10，但更新后该应用程序仍然运行良好。错误如下:

2016-10-10 21:44:28.925 Coacher[307:24128] critical: Native stacktrace:

2016-10-10 21:44:28.934 Coacher[307:24128] critical: 0
libmonosgen-2.0.dylib 0x00363d33 mono_handle_native_sigsegv + 242 2016-10-10 21:44:28.934 Coacher[307:24128] critical: 1 libsystem_platform.dylib
0x1db5326d _sigtramp + 24 2016-10-10 21:44:28.935 Coacher[307:24128] critical: 2 libsystem_kernel.dylib 0x1da9fd8f + 64 2016-10-10 21:44:28.935 Coacher[307:24128] critical: 3 libsystem_kernel.dylib 0x1da9fdd9 system_set_sfi_window + 0 2016-10-10 21:44:28.935 Coacher[307:24128] critical: 4 TCC 0x201a8e85 + 228 2016-10-10 21:44:28.936 Coacher[307:24128] critical: 5 TCC 0x201a8da1 + 0 2016-10-10 21:44:28.936 Coacher[307:24128] critical: 6 TCC
0x201ab57b + 276 2016-10-10 21:44:28.936 Coacher[307:24128] critical: 7 libxpc.dylib 0x1db8915f + 46 2016-10-10 21:44:28.937 Coacher[307:24128] critical: 8 libxpc.dylib 0x1db89101 + 26 2016-10-10 21:44:28.937 Coacher[307:24128] critical: 9
libdispatch.dylib 0x1d9ae49b + 604 2016-10-10 21:44:28.937 Coacher[307:24128] critical: 10 libdispatch.dylib 0x1d9afa91 + 378 2016-10-10 21:44:28.938 Coacher[307:24128] critical: 11 libdispatch.dylib 0x1d9af8b7 + 106 2016-10-10 21:44:28.938 Coacher[307:24128] critical: 12 libsystem_pthread.dylib 0x1db55947 _pthread_wqthread + 1168 2016-10-10 21:44:28.938 Coacher[307:24128] critical: 13 libsystem_pthread.dylib 0x1db5549c start_wqthread + 8 2016-10-10 21:44:28.939 Coacher[307:24128] critical: ================================================================= Got a SIGABRT while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your

application.

Answer 1

这是因为您的 iOS 10 更新。您现在需要请求相机的许可。下面的博客文章解释了如何设置这些权限，现在。

https://devblogs.microsoft.com/xamarin/new-ios-10-privacy-permission-settings/

Starting in iOS 10, nearly all APIs that require requesting authorization and other APIs, such as opening the camera or photo gallery, require a new key value pair to describe their usage in the Info.plist. This is very similar to the requirement for NSLocationWhenInUseUsageDescription or NSLocationAlwaysUsageDescription to be put into the Info.plit when using Geolocation and iBeacon APIs. The difference now is that the application will crash when the app attempts authorization without these keys set.