Xamarin.Forms应用程序更新到13.1后在iOS上崩溃
我在mac上使用Visual Studio 2017和Visual Studio 2017。Mono版本是5.18.1，Xamarin.iOS版本是12.4（我想）。该应用程序运行良好，没有任何问题。最近，我将Windows和Mac上的Visual Studio更新到2019年，Xamarin.iOS版本更新到13.4。现在，该应用程序在模拟器和iOS 13.1的iPhone上都出现了“奇怪”的崩溃。但在iOS 12.4的模拟器上，该应用程序运行平稳。此外，app store中发布的应用程序（使用Xamarin.iOS 12.4构建）在iOS 13.1设备中也能正常运行 在做一些与动画相关的工作时，应用程序似乎正在崩溃，下面是AppCenter的崩溃日志Xamarin.Forms应用程序更新到13.1后在iOS上崩溃,xamarin,xamarin.forms,xamarin.ios,core-animation,ios13,Xamarin,Xamarin.forms,Xamarin.ios,Core Animation,Ios13,我在mac上使用Visual Studio 2017和Visual Studio 2017。Mono版本是5.18.1，Xamarin.iOS版本是12.4（我想）。该应用程序运行良好，没有任何问题。最近，我将Windows和Mac上的Visual Studio更新到2019年，Xamarin.iOS版本更新到13.4。现在，该应用程序在模拟器和iOS 13.1的iPhone上都出现了“奇怪”的崩溃。但在iOS 12.4的模拟器上，该应用程序运行平稳。此外，app store中发布的应用程序（使
Application Specific Information:
*** Terminating app due to uncaught exception 'SIGABRT', reason: 'Objective-C exception thrown. Name: NSInternalInconsistencyException Reason: Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread.
Native stack trace:
**some native trace**
Xamarin Exception Stack:
Foundation.MonoTouchException: Objective-C exception thrown. Name: NSInternalInconsistencyException Reason: Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread.
Native stack trace:
**some native trace**
at ObjCRuntime.Runtime.ThrowNSException (System.IntPtr ns_exception) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/ObjCRuntime/Runtime.cs:406
at ObjCRuntime.Runtime.throw_ns_exception (System.IntPtr exc) [0x00000] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/runtime/Delegates.generated.cs:128
at (wrapper native-to-managed) ObjCRuntime.Runtime.throw_ns_exception(intptr)
at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSendSuper(intptr,intptr)
at UIKit.UIView.LayoutSubviews () [0x00023] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/UIView.g.cs:1290
at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].LayoutSubviews () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:289
at null.null
at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSendSuper(intptr,intptr)
at UIKit.UIView.LayoutSubviews () [0x00023] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/UIView.g.cs:1290
at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].LayoutSubviews () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:289
at null.null
at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSend(intptr,intptr)
at CoreAnimation.CATransaction.Commit () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/CATransaction.g.cs:90
at Xamarin.Forms.Platform.iOS.CADisplayLinkTicker.StartThread () [0x0003a] in D:\a\1\s\Xamarin.Forms.Platform.iOS\CADisplayLinkTicker.cs:61
at System.Threading.ThreadHelper.ThreadStart_Context (System.Object state) [0x00014] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/external/mono/mcs/class/referencesource/mscorlib/system/threading/thread.cs:74
at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00071] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/external/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:968
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/external/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:910
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state) [0x0002b] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/external/mono/mcs/class/referencesource/mscorlib/system/threading/executioncontext.cs:899
at System.Threading.ThreadHelper.ThreadStart () [0x00008] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/external/mono/mcs/class/referencesource/mscorlib/system/threading/thread.cs:111
有人知道这里有什么问题吗（不知何故，当我从与崩溃相关的视图中删除
Xamarin.Forms.EditorXamarin.Forms因此，将Xamarin.Forms版本更新到3.6解决了问题！当我从与崩溃相关的视图中删除
Xamarin.Forms.EditorXamarin.Forms因此，将Xamarin.Forms版本更新到3.6解决了这个问题！这可能意味着您正在后台线程或类似程序中更新某些UI。您是否可以调试代码以查看崩溃发生的位置，并检查是否正在更新UI。您可以使用
dispatch\u async（dispatch\u get\u main\u queue（），^{}）；Device.beginInvokeMainThread（操作）dispatch\u async（dispatch\u get\u main\u queue（），^{}）；Device.beginInvokeMainThread（操作）