xamarin应用程序SIGSEGV错误

我是新的monotouch开发者。

我的应用程序正常工作这个代码块，但突然关闭，并得到这个错误。我在哪里可以做错？我该如何解决？谢谢。

NewsElement.Tapped+= delegate(object sender, EventArgs e) 
     { 
      try 
      { 
       News news=_news.Find(x => x.Title== _section.Elements[NewsElement._indexPath.Row].Caption.ToString()); 


       using(NewsDetailViewController nDVC=new NewsDetailViewController(news,_newsEnum)) 
       { 

        this.NavigationController.NavigationBar.BarTintColor = ExtensionMethods.ToUIColor("4BC1D2"); 
        this.NavigationController.NavigationBar.TintColor=UIColor.White; 
        this.NavigationController.PushViewController (nDVC, true); 

       } 
      } 
      catch 
      { 

      } 

     };

错误是：

mono-rt: Stacktrace: 

mono-rt: at <unknown> <0xffffffff> 

mono-rt: at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging.IntPtr_objc_msgSendSuper (intptr,intptr) <IL 0x00026, 0xffffffff> 

mono-rt: at MonoTouch.UIKit.UIViewController.get_NavigationController() [0x00030] in /Developer/MonoTouch/Source/monotouch/src/build/compat/UIKit/UIViewController.g.cs:1595 

mono-rt: at HaberOku.MainViewController.<LoadView>m__A (object,System.EventArgs) [0x00029] in /Users/muhammetsahin/Projects/HaberOku/HaberOku/DialogViewControllers/MainViewController.cs:89 

mono-rt: at (wrapper delegate-invoke) System.EventHandler`1.invoke_void__this___object_TEventArgs (object,TEventArgs) <IL 0x00027, 0x00087> 

mono-rt: at (wrapper delegate-invoke) System.EventHandler`1.invoke_void__this___object_TEventArgs (object,TEventArgs) <IL 0x00059, 0xffffffff> 

mono-rt: at HaberOku.NewsElement.Selected (MonoTouch.Dialog.DialogViewController,MonoTouch.UIKit.UITableView,MonoTouch.Foundation.NSIndexPath) [0x00029] in /Users/muhammetsahin/Projects/HaberOku/HaberOku/Elements/NewsElement.cs:61 

mono-rt: at MonoTouch.Dialog.DialogViewController.Selected (MonoTouch.Foundation.NSIndexPath) [0x00033] in /Users/muhammetsahin/Projects/HaberOku/HaberOku/MonoTouchDialog/DialogViewController.cs:522 

mono-rt: at MonoTouch.Dialog.DialogViewController/Source.RowSelected (MonoTouch.UIKit.UITableView,MonoTouch.Foundation.NSIndexPath) [0x00021] in /Users/muhammetsahin/Projects/HaberOku/HaberOku/MonoTouchDialog/DialogViewController.cs:368 

mono-rt: at (wrapper runtime-invoke) <Module>.runtime_invoke_void__this___object_object (object,intptr,intptr,intptr) <IL 0x0005a, 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 HaberOku.Application.Main (string[]) [0x00009] in /Users/muhammetsahin/Projects/HaberOku/HaberOku/Main.cs:17 

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. 
=================================================================

来源

2014-02-26 muhammetsahin

这是一个非常奇怪的图案。只要块完成，即使您刚将nDVC推入导航堆栈并仍在使用它，它也会处理nDVC。尝试删除使用（），以便nDVC不会过早处置。

  using(NewsDetailViewController nDVC=new NewsDetailViewController(news,_newsEnum)) 
      { 
       this.NavigationController.NavigationBar.BarTintColor = ExtensionMethods.ToUIColor("4BC1D2"); 
       this.NavigationController.NavigationBar.TintColor=UIColor.White; 
       this.NavigationController.PushViewController (nDVC, true); 
      }

来源

2014-02-26 14:33:17 Jason

谢谢。我在你的帮助下解决了。 – muhammetsahin

当我在引用执行委托的时候没有活动的对象时，我也遇到了这种错误。

所以，也许你可以尝试确保你所调用的对象仍然可用/没有被垃圾收集。尝试发送它们或进行空检查。

来源

2014-02-26 14:36:22 Alexandra

xamarin应用程序SIGSEGV错误

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