Xamarin.Forms iOS版本在启动时崩溃崩溃

Question

我遇到了Xamarin的重大问题。我正在使用Xamarin.Forms，它对Android来说工作正常，但对于iOS构建它在Debug中完美工作，但是当我执行发布时，构建应用程序会在启动时崩溃。下面是一些日志我能捕捉到：

Info (11667)/BrixnMobileUIiOS: Found new TLS offset at 224 
Error (11667)/BrixnMobileUIiOS(UIKit): The app delegate must implement the window property if it wants to use a main storyboard file. 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'Akavache.Mac' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'Akavache.Mac' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'Akavache.Deprecated' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'Akavache.Deprecated' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'Akavache.Mobile' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'Akavache.Mobile' (culture: '') 
Info (11667)/BrixnMobileUIiOS: VideoPlayer [INFO]: Initializing Xamarin Forms Video Player on iPhone v10.3.2 
Info (11667)/BrixnMobileUIiOS(AppleJPEG): [0x1057e8600] Created session 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'ReactiveUI.XamForms' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'ReactiveUI.XamForms' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'ReactiveUI.Winforms' (culture: '') 
Info (11667)/BrixnMobileUIiOS: Xamarin.iOS: Unable to locate assembly 'ReactiveUI.Winforms' (culture: '') 
Info (11667)/BrixnMobileUIiOS: [Error] CurrentDomainOnUnhandledException 
Info (11667)/BrixnMobileUIiOS: Unhandled managed exception: 
Info (11667)/BrixnMobileUIiOS: critical: Stacktrace: 
Info (11667)/BrixnMobileUIiOS: critical: 
Info (11667)/BrixnMobileUIiOS: critical: 0 BrixnMobileUIiOS     0x0000000103c0facc WebPGetDecoderVersion + 323252 
Info (11667)/BrixnMobileUIiOS: critical: 1 libsystem_platform.dylib   0x000000018cbb131c _sigtramp + 52 
Info (11667)/BrixnMobileUIiOS: critical: 2 libsystem_pthread.dylib    0x000000018cbb7264 pthread_kill + 112 
Info (11667)/BrixnMobileUIiOS: critical: 3 libsystem_c.dylib     0x000000018ca619c4 abort + 140 
Info (11667)/BrixnMobileUIiOS: critical: 4 BrixnMobileUIiOS     0x0000000103d46d28 xamarin_get_block_descriptor + 4588 
Info (11667)/BrixnMobileUIiOS: critical: 5 BrixnMobileUIiOS     0x0000000103c557f4 WebPGetDecoderVersion + 609244 
Info (11667)/BrixnMobileUIiOS: critical: 6 BrixnMobileUIiOS     0x0000000103c0f5cc WebPGetDecoderVersion + 321972 
Info (11667)/BrixnMobileUIiOS: critical: 7 BrixnMobileUIiOS     0x0000000103c0e5f0 WebPGetDecoderVersion + 317912 
Info (11667)/BrixnMobileUIiOS: critical: 8 BrixnMobileUIiOS     0x0000000103c06580 WebPGetDecoderVersion + 285032 
Info (11667)/BrixnMobileUIiOS: critical: 9 BrixnMobileUIiOS     0x0000000100775798 sqlite3_db_readonly + 6676600 
Info (11667)/BrixnMobileUIiOS: critical: 10 BrixnMobileUIiOS     0x00000001005103fc sqlite3_db_readonly + 4164828 
Info (11667)/BrixnMobileUIiOS: critical: 11 BrixnMobileUIiOS     0x0000000100513ae4 sqlite3_db_readonly + 4178884 
Info (11667)/BrixnMobileUIiOS: critical: 12 BrixnMobileUIiOS     0x0000000101fef498 sqlite3_db_readonly + 32341368 
Info (11667)/BrixnMobileUIiOS: critical: 13 BrixnMobileUIiOS     0x00000001019da454 sqlite3_db_readonly + 25963828 
Info (11667)/BrixnMobileUIiOS: critical: 14 BrixnMobileUIiOS     0x000000010071bcd4 sqlite3_db_readonly + 6309300 
Info (11667)/BrixnMobileUIiOS: critical: 15 BrixnMobileUIiOS     0x0000000103c1e6a8 WebPGetDecoderVersion + 383632 
Info (11667)/BrixnMobileUIiOS: critical: 16 BrixnMobileUIiOS     0x0000000103c9843c WebPGetDecoderVersion + 882724 
Info (11667)/BrixnMobileUIiOS: critical: 17 BrixnMobileUIiOS     0x0000000103c98398 WebPGetDecoderVersion + 882560 
Info (11667)/BrixnMobileUIiOS: critical: 18 BrixnMobileUIiOS     0x0000000103b33be4 sqlite3_db_readonly + 60933316 
Info (11667)/BrixnMobileUIiOS: critical: 19 BrixnMobileUIiOS     0x0000000103b3aa3c sqlite3_db_readonly + 60961564 
Info (11667)/BrixnMobileUIiOS: critical: 20 Foundation       0x000000018e5e64cc <redacted> + 340 
Info (11667)/BrixnMobileUIiOS: critical: 21 CoreFoundation      0x000000018daa142c <redacted> + 24 
Info (11667)/BrixnMobileUIiOS: critical: 22 CoreFoundation      0x000000018daa0d04 <redacted> + 388 
Info (11667)/BrixnMobileUIiOS: critical: 23 CoreFoundation      0x000000018da9e9a8 <redacted> + 744 
Info (11667)/BrixnMobileUIiOS: critical: 24 CoreFoundation      0x000000018d9ceda4 CFRunLoopRunSpecific + 424 
Info (11667)/BrixnMobileUIiOS: critical: 25 GraphicsServices     0x000000018f438074 GSEventRunModal + 100 
Info (11667)/BrixnMobileUIiOS: critical: 26 UIKit        0x0000000193c89058 UIApplicationMain + 208 
Info (11667)/BrixnMobileUIiOS: critical: 27 BrixnMobileUIiOS     0x0000000102270f64 sqlite3_db_readonly + 34969668 
Info (11667)/BrixnMobileUIiOS: critical: 28 BrixnMobileUIiOS     0x0000000101bbbfcc sqlite3_db_readonly + 27936940 
Info (11667)/BrixnMobileUIiOS: critical: 29 BrixnMobileUIiOS     0x0000000101bbbe8c sqlite3_db_readonly + 27936620 
Info (11667)/BrixnMobileUIiOS: critical: 30 BrixnMobileUIiOS     0x00000001001ff554 sqlite3_db_readonly + 949812 
Info (11667)/BrixnMobileUIiOS: critical: 31 BrixnMobileUIiOS     0x000000010071bcd4 sqlite3_db_readonly + 6309300 
Info (11667)/BrixnMobileUIiOS: critical: 32 BrixnMobileUIiOS     0x0000000103c1e6a8 WebPGetDecoderVersion + 383632 
Info (11667)/BrixnMobileUIiOS: critical: 33 BrixnMobileUIiOS     0x0000000103c9843c WebPGetDecoderVersion + 882724 
Info (11667)/BrixnMobileUIiOS: critical: 34 BrixnMobileUIiOS     0x0000000103c9b660 WebPGetDecoderVersion + 895560 
Info (11667)/BrixnMobileUIiOS: critical: 35 BrixnMobileUIiOS     0x0000000103c02f04 WebPGetDecoderVersion + 271084 
Info (11667)/BrixnMobileUIiOS: critical: 36 BrixnMobileUIiOS     0x0000000103d4b8f0 xamarin_localized_string_format_9 + 3196 
Info (11667)/BrixnMobileUIiOS: critical: 37 BrixnMobileUIiOS     0x0000000103bbc530 sqlite3_db_readonly + 61492752 
Info (11667)/BrixnMobileUIiOS: critical: 38 libdyld.dylib      0x000000018c9dd59c <redacted> + 4 

关于“如果想要使用主要故事板文件的应用程序代理必须实现窗口属性”，我也把一个UIWindow窗口覆盖并删除了警告但崩溃仍然发生。

我可以看到它也抱怨一些组件，但我要么不使用这些或他们存在。我的链接器选项设置为“不链接”。在调试中，一切正常运行没有任何问题。我真的迷失在这里......

Answer 1

1. 你能改变链接器选项为“SDK assembly only”吗？

2. 看看#if RELEASE #endif短语里面是否有什么错误。