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我正在使用 Xamarin.IOS 开发我的第一个真正的应用程序。大多数情况下，该应用程序运行良好，但每天有几次崩溃并出现以下堆栈跟踪：

mono-rt: Stacktrace:
mono-rt:   at <unknown> <0xffffffff>
mono-rt:   at (wrapper managed-to-native) MonoTouch.Foundation.NSObject.monotouch_release_managed_ref (intptr) <IL 0x00023, 0xffffffff>
mono-rt:   at MonoTouch.Foundation.NSObject.ReleaseManagedRef () [0x00000] in /Developer/MonoTouch/Source/monotouch/src/Foundation/NSObject.cs:98
mono-rt:   at MonoTouch.Foundation.NSObject/NSObject_Disposer.Drain (MonoTouch.Foundation.NSObject) [0x00062] in /Developer/MonoTouch/Source/monotouch/src/shared/Foundation/NSObject2.cs:545
mono-rt:   at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff>
mono-rt:   at <unknown> <0xffffffff>
mono-rt:   at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <IL 0x0009f, 0xffffffff>
mono-rt:   at MonoTouch.UIKit.UIApplication.Main (string[],string,string) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
mono-rt:   at Diet52App.Application.Main (string[]) [0x00008] in /Users/danielnordmark/Projects/Diet52App/Diet52App/Main.cs:16
mono-rt:   at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff>

mono-rt: 
Native stacktrace:


mono-rt: 
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================

我的猜测是某些对象在我尝试使用它之前会被垃圾收集。但是我对如何找出我的代码中发生这种情况的时间和地点感到有点迷茫。

我怎样才能发现问题出在哪里？任何帮助深表感谢！

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1 回答 1

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问题似乎与我的 UITableViewController 有关，我有一个基类和两个不同的实例。这两者之间的冲突导致了 SIGSEGV 错误。

由于这个答案https://stackoverflow.com/a/6769885/248905，我设法跟踪了问题

我必须做的唯一修改是像这样用 InvokeOnMainThread 包装代码，

更新： 在 Xamarin 与 Rolf 联系后，我更新了我的解决方案，正确的解决方法是将代码放入 ViewDidDissapear 而不是 Dispose。

public override void ViewDidDisappear (bool animated)
{
    searchController.SearchResultsSource = null;
    searchController.Delegate = null;
    base.ViewDidDisappear (animated);
}
于 2013-07-31T09:19:25.173 回答