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  • Xamarin.forms xamarin forms ios 13.1上的App.MobileService.SyncContext.InitializeAsync（商店）崩溃

Xamarin.forms xamarin forms ios 13.1上的App.MobileService.SyncContext.InitializeAsync（商店）崩溃

xamarin.forms

Xamarin.forms xamarin forms ios 13.1上的App.MobileService.SyncContext.InitializeAsync（商店）崩溃,xamarin.forms,azure-mobile-services,Xamarin.forms,Azure Mobile Services,使用VS2019在iphone模拟器上运行xamarin forms项目时，尝试初始化本地商店时崩溃。它在安卓上工作没有问题 await App.MobileService.SyncContext.InitializeAsync(store); 这是输出 2019-10-15 11:24:02.309108+0100 RangeFinder.iOS[22896:377362] *** Assertion failure in -[UIApplication _runWithMainScene:

使用VS2019在iphone模拟器上运行xamarin forms项目时，尝试初始化本地商店时崩溃。它在安卓上工作没有问题

await App.MobileService.SyncContext.InitializeAsync(store);
这是输出

2019-10-15 11:24:02.309108+0100 RangeFinder.iOS[22896:377362] *** Assertion failure in -[UIApplication _runWithMainScene:transitionContext:completion:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKitCore_Sim/UIKit-3899.22.15/UIApplication.m:4234
本机崩溃报告

Memory around native instruction pointer (0x109dfffe4):0x109dfffd4  8b 47 1c 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5  .G.]....
....UH..
0x109dfffe4  8b 47 20 a9 00 00 00 02 75 0c a9 00 00 00 10 75  .G .....u......u
0x109dffff4  26 48 8b 07 5d c3 48 8d 3d 9c 59 22 00 48 8d 35  &H..].H.=.Y".H.5
0x109e00004  8b 0a 24 00 48 8d 0d ff 0a 24 00 ba 79 03 00 00  ..$.H....$.
.y...
在执行本机代码时收到SIGSEGV。这通常表明 mono运行时或某个本机库中出现致命错误 由您的应用程序使用

本机堆栈跟踪：

0x109d16f05 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_dump_native_crash_info
    0x109d0ae45 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_handle_native_crash
    0x109d1e181 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_sigsegv_signal_handler_debug
    0x7fff518c5b5d - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_platform.dylib : _sigtramp
    0x109db9e79 - /Users/karlgibney/Library
/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_class_get_checked
    0x109d09cee - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_handle_exception_internal
    0x109d08dc9 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_handle_exception
    0x109c8a16f - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_amd64_throw_exception
    0x10cd755b0 - Unknown
    0x109f6d713 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : _ZL17exception_handlerP11NSException
    0x7fff23baa64d - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __
handleUncaughtException
    0x7fff50864d76 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libobjc.A.dylib : _ZL15_objc_terminatev
    0x7fff4f6dfe97 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++abi.dylib : _ZSt11__terminatePFvvE
    0x7fff4f6dfe39 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++abi.dylib : _ZSt9terminatev
    0x7fff516ad795 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdispatch.dylib : _dispatch_client_callout
    0x7fff516b0199 - /Applications/Xcode.app/Contents/Developer/
Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdispatch.dylib : _dispatch_block_invoke_direct
    0x7fff3652c49e - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/FrontBoardServices.framework/FrontBoardServices : __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
    0x7fff3652c18c - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/FrontBoardServices.framework/FrontBoardServices : -[FBSSerialQueue _queue_performNextIfPossible]
    0x7fff3652c69b - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Private
Frameworks/FrontBoardServices.framework/FrontBoardServices : -[FBSSerialQueue _performNextFromRunLoopSource]
    0x7fff23b0d271 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
    0x7fff23b0d19c - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRunLoopDoSource0
    0x7fff23b0c974 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRunLoopDoSources0
    0x7fff23b0767f - /Applications/Xcode.app/Contents/Dev
eloper/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRunLoopRun
    0x7fff23b06e66 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : CFRunLoopRunSpecific
    0x7fff38346bb0 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices : GSEventRunModal
    0x7fff47578dd0 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore : UIAppl
icationMain
    0x111b8b0a2 - Unknown
    0x111b8adf3 - Unknown
    0x1112627e3 - Unknown
    0x109d21565 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_jit_runtime_invoke
    0x109e4d877 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_runtime_invoke_checked
    0x109e53cfc - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_runtime_exec_main_checked
    0x109c811b2 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.ap
p/RangeFinder.iOS : mono_jit_exec
    0x109f7ecee - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : xamarin_main
    0x109c3bc37 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : main
    0x7fff516ecd29 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdyld.dylib : start
    0x3 - Unknown

at <unknown> <0xffffffff>
      at UIKit.UIApplication:UIApplicationMain <0x00251>
      at UIKit.UIApplication:Main <0x000b2>
      at UIKit.UIApplication:Main <0x00132>
      at RangeFinder.iOS.Application:Main <0x00092>
      at <Module>:runtime_invoke_void_object <0x00352>
基本故障地址报告

Memory around native instruction pointer (0x109dfffe4):0x109dfffd4  8b 47 1c 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5  .G.]....
....UH..
0x109dfffe4  8b 47 20 a9 00 00 00 02 75 0c a9 00 00 00 10 75  .G .....u......u
0x109dffff4  26 48 8b 07 5d c3 48 8d 3d 9c 59 22 00 48 8d 35  &H..].H.=.Y".H.5
0x109e00004  8b 0a 24 00 48 8d 0d ff 0a 24 00 ba 79 03 00 00  ..$.H....$.
.y...
托管堆栈跟踪：

0x109d16f05 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_dump_native_crash_info
    0x109d0ae45 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_handle_native_crash
    0x109d1e181 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_sigsegv_signal_handler_debug
    0x7fff518c5b5d - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_platform.dylib : _sigtramp
    0x109db9e79 - /Users/karlgibney/Library
/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_class_get_checked
    0x109d09cee - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_handle_exception_internal
    0x109d08dc9 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_handle_exception
    0x109c8a16f - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_amd64_throw_exception
    0x10cd755b0 - Unknown
    0x109f6d713 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : _ZL17exception_handlerP11NSException
    0x7fff23baa64d - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __
handleUncaughtException
    0x7fff50864d76 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libobjc.A.dylib : _ZL15_objc_terminatev
    0x7fff4f6dfe97 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++abi.dylib : _ZSt11__terminatePFvvE
    0x7fff4f6dfe39 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++abi.dylib : _ZSt9terminatev
    0x7fff516ad795 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdispatch.dylib : _dispatch_client_callout
    0x7fff516b0199 - /Applications/Xcode.app/Contents/Developer/
Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdispatch.dylib : _dispatch_block_invoke_direct
    0x7fff3652c49e - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/FrontBoardServices.framework/FrontBoardServices : __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
    0x7fff3652c18c - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/FrontBoardServices.framework/FrontBoardServices : -[FBSSerialQueue _queue_performNextIfPossible]
    0x7fff3652c69b - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Private
Frameworks/FrontBoardServices.framework/FrontBoardServices : -[FBSSerialQueue _performNextFromRunLoopSource]
    0x7fff23b0d271 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
    0x7fff23b0d19c - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRunLoopDoSource0
    0x7fff23b0c974 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRunLoopDoSources0
    0x7fff23b0767f - /Applications/Xcode.app/Contents/Dev
eloper/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : __CFRunLoopRun
    0x7fff23b06e66 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation : CFRunLoopRunSpecific
    0x7fff38346bb0 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices : GSEventRunModal
    0x7fff47578dd0 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore : UIAppl
icationMain
    0x111b8b0a2 - Unknown
    0x111b8adf3 - Unknown
    0x1112627e3 - Unknown
    0x109d21565 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_jit_runtime_invoke
    0x109e4d877 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_runtime_invoke_checked
    0x109e53cfc - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : mono_runtime_exec_main_checked
    0x109c811b2 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.ap
p/RangeFinder.iOS : mono_jit_exec
    0x109f7ecee - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : xamarin_main
    0x109c3bc37 - /Users/karlgibney/Library/Developer/CoreSimulator/Devices/6F7C1809-51A7-466D-83B1-F74FFF7E9E96/data/Containers/Bundle/Application/4BCB6227-DAF1-4834-8664-A496C7AACC61/RangeFinder.iOS.app/RangeFinder.iOS : main
    0x7fff516ecd29 - /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdyld.dylib : start
    0x3 - Unknown

at <unknown> <0xffffffff>
      at UIKit.UIApplication:UIApplicationMain <0x00251>
      at UIKit.UIApplication:Main <0x000b2>
      at UIKit.UIApplication:Main <0x00132>
      at RangeFinder.iOS.Application:Main <0x00092>
      at <Module>:runtime_invoke_void_object <0x00352>

at
在UIKit.UIApplication:UIApplicationMain
在UIKit.UIApplication:Main
在UIKit.UIApplication:Main
在RangeFinder.iOS.Application:Main
在：运行时\u调用\u无效\u对象
我们也得到了这个，我们已经修复了它。我们使用的是带有XF 4.1.0.673156的VS Mac 8.3.5（build 13）

当我们开始进行故障排除时，我们注意到从
App.xaml.cs
到
Main.xaml.cs
的
NavAsync
调用失败，因为我们的一个库在
AppDelegate.cs
中没有
Init（）

当我们进入
AppDelegate
时，我注意到我们没有
Init（）
FFImageCache
，但更重要的是，
Init（）
调用发生在 
LoadApplication（新应用程序（新初始值设定项（））呼叫


我将所有的
Init（）
调用移到LoadApplication之前，一切都正常
 嗨，Xamarin Forms或VS 2029的哪个版本，他们都需要更新最新版本。然后你可以再试一次。我正在运行最新版本。VS 2019 v16.3.5和Xamarin Forms v4.2.0.848062感谢您的回复，您可以作为问题提交。然后我们可以在GitHub中跟进。