在Xamarin.iOS中查找SIGSEGV的原因应用程序

Question

我正在使用Xamarin.IOS处理我的第一个真正的应用程序。大多数时候应用程序的伟大工程，但一天几次将其与下面的堆栈跟踪崩溃的：

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，有些对象结婚之前我试图用它收集垃圾。但是我觉得有点失落，要知道我的代码在何时何地发生这种事情。

如何找出问题所在？任何帮助深表感谢！

Answer 1

这个问题似乎与我的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。

我管理的问题，由于跟踪这个答案https://stackoverflow.com/a/6769885/248905

我不得不做出的唯一修改是包装与InvokeOnMainThread这样的代码，

更新： 我更新了我的解决方案后，我曾在Xamarin与Rolf联系，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); 
}