Xamarin.IOS: UITableViewSource si blocca il dispositivo

Question

ho una molto semplice applicazione che contiene solo UITableView e la sua UITableViewSource ..

Quando si utilizza UITableView senza collegamento al UITableViewSource (l'applicazione opere in simulatore & dispositivo)

Ma quando collego l'UITableView al UITableViewSource (l'applicazione opere in simulatore ma si blocca sul dispositivo)

(Il dispositivo è iPad esecuzione IOS 9.2.1)

mi dà questa lunga errore:

2016-02-08 05:16:02.913 secondApp[4487:1711787] critical: Stacktrace: 

2016-02-08 05:16:02.913 secondApp[4487:1711787] critical: at <unknown> <0xffffffff> 
2016-02-08 05:16:02.915 secondApp[4487:1711787] critical: at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0xffffffff> 
2016-02-08 05:16:02.915 secondApp[4487:1711787] critical: at UIKit.UIApplication.Main (string[],intptr,intptr) [0x00005] in /Users/builder/data/lanes/2689/962a0506/source/maccore/src/UIKit/UIApplication.cs:77 
2016-02-08 05:16:02.916 secondApp[4487:1711787] critical: at UIKit.UIApplication.Main (string[],string,string) [0x0001c] in /Users/builder/data/lanes/2689/962a0506/source/maccore/src/UIKit/UIApplication.cs:60 
2016-02-08 05:16:02.916 secondApp[4487:1711787] critical: at secondApp.Application.Main (string[]) [0x00008] in /Users/Mujtaba/Desktop/XamarinProjects/secondApp/secondApp/Main.cs:12 
2016-02-08 05:16:02.917 secondApp[4487:1711787] critical: at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) <0xffffffff> 
2016-02-08 05:16:02.917 secondApp[4487:1711787] critical: 
Native stacktrace: 

2016-02-08 05:16:02.982 secondApp[4487:1711787] critical: 0 secondApp       0x0027ffb5 mono_handle_native_sigsegv + 240 
2016-02-08 05:16:02.982 secondApp[4487:1711787] critical: 1 secondApp       0x00286243 mono_sigsegv_signal_handler + 226 
2016-02-08 05:16:02.983 secondApp[4487:1711787] critical: 2 libsystem_platform.dylib   0x20f3385f _sigtramp + 42 
2016-02-08 05:16:02.983 secondApp[4487:1711787] critical: 3 secondApp       0x00323310 xamarin_stret_trampoline + 96 
2016-02-08 05:16:02.984 secondApp[4487:1711787] critical: 4 UIKit        0x25479d29 <redacted> + 2976 
2016-02-08 05:16:02.984 secondApp[4487:1711787] critical: 5 UIKit        0x2547907b <redacted> + 378 
2016-02-08 05:16:02.984 secondApp[4487:1711787] critical: 6 UIKit        0x25478e2d <redacted> + 56 
2016-02-08 05:16:02.985 secondApp[4487:1711787] critical: 7 UIKit        0x25478c33 <redacted> + 314 
2016-02-08 05:16:02.985 secondApp[4487:1711787] critical: 8 UIKit        0x256d4293 <redacted> + 42 
2016-02-08 05:16:02.985 secondApp[4487:1711787] critical: 9 UIKit        0x2547f295 <redacted> + 128 
2016-02-08 05:16:02.986 secondApp[4487:1711787] critical: 10 UIKit        0x25391369 <redacted> + 1480 
2016-02-08 05:16:02.986 secondApp[4487:1711787] critical: 11 UIKit        0x253b5fd5 <redacted> + 68 
2016-02-08 05:16:02.986 secondApp[4487:1711787] critical: 12 UIKit        0x253910ab <redacted> + 778 
2016-02-08 05:16:02.987 secondApp[4487:1711787] critical: 13 UIKit        0x253907ed <redacted> + 124 
2016-02-08 05:16:02.987 secondApp[4487:1711787] critical: 14 UIKit        0x2539069b <redacted> + 426 
2016-02-08 05:16:02.987 secondApp[4487:1711787] critical: 15 UIKit        0x2539d713 <redacted> + 1658 
2016-02-08 05:16:02.987 secondApp[4487:1711787] critical: 16 UIKit        0x2539d08f <redacted> + 30 
2016-02-08 05:16:02.988 secondApp[4487:1711787] critical: 17 UIKit        0x2539c87d <redacted> + 496 
2016-02-08 05:16:02.988 secondApp[4487:1711787] critical: 18 UIKit        0x25399bf3 <redacted> + 278 
2016-02-08 05:16:02.988 secondApp[4487:1711787] critical: 19 UIKit        0x2540e915 <redacted> + 48 
2016-02-08 05:16:02.989 secondApp[4487:1711787] critical: 20 UIKit        0x2563311d <redacted> + 3320 
2016-02-08 05:16:02.989 secondApp[4487:1711787] critical: 21 UIKit        0x25636f0f <redacted> + 1570 
2016-02-08 05:16:02.989 secondApp[4487:1711787] critical: 22 UIKit        0x2564ac15 <redacted> + 36 
2016-02-08 05:16:02.989 secondApp[4487:1711787] critical: 23 UIKit        0x256343f7 <redacted> + 134 
2016-02-08 05:16:02.990 secondApp[4487:1711787] critical: 24 FrontBoardServices     0x2250fc75 <redacted> + 232 
2016-02-08 05:16:02.990 secondApp[4487:1711787] critical: 25 FrontBoardServices     0x2250ff61 <redacted> + 44 
2016-02-08 05:16:02.990 secondApp[4487:1711787] critical: 26 CoreFoundation      0x211c1257 <redacted> + 14 
2016-02-08 05:16:02.990 secondApp[4487:1711787] critical: 27 CoreFoundation      0x211c0e47 <redacted> + 454 
2016-02-08 05:16:02.990 secondApp[4487:1711787] critical: 28 CoreFoundation      0x211bf1af <redacted> + 806 
2016-02-08 05:16:02.991 secondApp[4487:1711787] critical: 29 CoreFoundation      0x21111bb9 CFRunLoopRunSpecific + 516 
2016-02-08 05:16:02.991 secondApp[4487:1711787] critical: 30 CoreFoundation      0x211119ad CFRunLoopRunInMode + 108 
2016-02-08 05:16:02.991 secondApp[4487:1711787] critical: 31 UIKit        0x25403a17 <redacted> + 526 
2016-02-08 05:16:02.991 secondApp[4487:1711787] critical: 32 UIKit        0x253fdfb5 UIApplicationMain + 144 
2016-02-08 05:16:02.992 secondApp[4487:1711787] critical: 33 secondApp       0x000f4044 wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr + 272 
2016-02-08 05:16:02.992 secondApp[4487:1711787] critical: 34 secondApp       0x000bd130 UIKit_UIApplication_Main_string___intptr_intptr + 52 
2016-02-08 05:16:02.992 secondApp[4487:1711787] critical: 35 secondApp       0x000bd0f0 UIKit_UIApplication_Main_string___string_string + 204 
2016-02-08 05:16:02.992 secondApp[4487:1711787] critical: 36 secondApp       0x000b714c secondApp_Application_Main_string__ + 188 
2016-02-08 05:16:02.992 secondApp[4487:1711787] critical: 37 secondApp       0x002101b4 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 256 
2016-02-08 05:16:02.993 secondApp[4487:1711787] critical: 38 secondApp       0x0028888f mono_jit_runtime_invoke + 1150 
2016-02-08 05:16:02.993 secondApp[4487:1711787] critical: 39 secondApp       0x002c71f5 mono_runtime_invoke + 88 
2016-02-08 05:16:02.993 secondApp[4487:1711787] critical: 40 secondApp       0x002ca64b mono_runtime_exec_main + 282 
2016-02-08 05:16:02.993 secondApp[4487:1711787] critical: 41 secondApp       0x00332fa4 xamarin_main + 2072 
2016-02-08 05:16:02.994 secondApp[4487:1711787] critical: 42 secondApp       0x0025aac5 main + 112 
2016-02-08 05:16:02.994 secondApp[4487:1711787] critical: 43 libdyld.dylib      0x20dc4873 <redacted> + 2 
2016-02-08 05:16:02.994 secondApp[4487:1711787] critical: 
================================================================= 
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. 
================================================================= 

Tutto il mio progetto contengono solo 2 viste :)

viewController .cs:

using System; 
using UIKit; 

namespace secondApp 
{ 
    public partial class ViewController : UIViewController 
    { 
     public ViewController (IntPtr handle) : base (handle) 
     { 
     } 

     public override void ViewDidLoad() 
     { 
      base.ViewDidLoad(); 

      string[] list = new string[]{"Red", "Blue", "Brown", "Green" }; 

      UITableView table = new UITableView { 
       Frame = new CoreGraphics.CGRect (0, 0, View.Bounds.Width, View.Bounds.Height), 

       Source = new myTableSource(list) // the problem happens when I add this line 
      }; 

      View.AddSubview (table); 

     } 

     public override void DidReceiveMemoryWarning() 
     { 
      base.DidReceiveMemoryWarning(); 
     } 
    } 
} 

e myTableSource.cs:

using System; 
using UIKit; 

namespace secondApp 
{ 
    public class myTableSource : UITableViewSource 
    { 
     string[] TableItems; 
     string CellIdentifier = "TableCell"; 

     public myTableSource (string[] items) 
     { 
      TableItems = items; 
     } 

     public override nint RowsInSection (UITableView tableview, nint section) 
     { 
      return TableItems.Length; 
     } 

     public override UITableViewCell GetCell (UITableView tableView, Foundation.NSIndexPath indexPath) 
     { 
      UITableViewCell cell = tableView.DequeueReusableCell (CellIdentifier); 
      string item = TableItems[indexPath.Row]; 

      if (cell == null){ 
       cell = new UITableViewCell (UITableViewCellStyle.Default, CellIdentifier); 
      } 

      cell.TextLabel.Text = item; 

      return cell; 
     } 
    } 
} 

La speranza c'è una soluzione semplice per questo errore, perché ho ancora nel primo passo per imparare Xamarin

Grazie in anticipo ..

Answer 1

Dopo quasi una settimana il problema è andato da solo, la stessa soluzione funziona perfettamente nello stesso dispositivo ...

Ho solo fatto Build -> Clean All .. forse ha risolto il problema, o forse il problema è stato risolto da solo in attesa di una settimana