this.InvokeOnMainThread( delegate
{
*snipped*
this.Title = "Issued: " + IssuedTicketSortedDataSource.IssuedTickets.Count;
} );
________________________________
From: René Ruppert [[email protected]]
Sent: Saturday, April 07, 2012 1:20 PM
To: Dean Cleaver; 'René Ruppert'
Cc: [email protected]
Subject: AW: [MonoTouch] Crash problem
Can you show some code that is setting the title?
René
Von: Dean Cleaver [mailto:[email protected]]
Gesendet: Samstag, 7. April 2012 19:42
An: René Ruppert
Cc: [email protected]
Betreff: RE: [MonoTouch] Crash problem
Rene,
I’m using 5.2.10. And the call to change the title was invoked on the main
thread. Removing the call to change the title stops the crashing from occurring.
It doesn’t crash in my code. If you look at the stack trace, the last code of
mine called is “Main” where is the entry point. My clicked code is executed,
it’s after that that it crashes.
Yes – the view is still present, just its Title has changed.
I’m using C# callbacks, and I keep a reference to the sheet also.
If I remove the code that updates the Title, I get no crashes at all.
Dino
From: René Ruppert
[mailto:[email protected]]<mailto:[mailto:[email protected]]>
Sent: Saturday, April 07, 2012 3:39 AM
To: Dean Cleaver
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [MonoTouch] Crash problem
Do you use Monotouch 5.3? It will throw an exception in debug builds if you
modify UI on non-UI thread.
Next: where in your button click handler or dismissal handler does it crash? Or
those reached at all?
Is the view you're presenting the sheet from still the same after your update?
It must not be collected while the sheet is visible.
Are you using the C# callbacks of the sheet or a delegate? Latter one could
cause GC problems if you don't keep a reference to the sheet (at least I
noticed this behavior with alert view).
Grüße, René
Am 07.04.2012 um 01:54 schrieb Dean Cleaver
<[email protected]<mailto:[email protected]>>:
Even closer… but not 100% certain.
As I update the table, I also update the Title of the current screen. If I
don’t update it, it doesn’t crash (in this instance). This is very repeatable.
However, my QA team tells me that it happens on other screens that do not
update the title.
Dino
From: Dean Cleaver
Sent: Friday, April 06, 2012 6:38 PM
To: Dean Cleaver; [email protected]<mailto:[email protected]>
Subject: RE: Crash problem
Ok – have slightly more information, but no idea how to correct it.
This seems to happen every time if the UI is updated while an Action Sheet is
open. My code polls in the background for updates, so if a user opens an action
sheet, then it polls and finds an update, and adds the update to a table, when
the user clicks a button on the action sheet it crashes – every time.
I am certain that all the polling code is invoked on the main thread for the
updates etc – what else can I look at to try to fix it?
Dino
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]]<mailto:[mailto:[email protected]]>
On Behalf Of Dean Cleaver
Sent: Friday, April 06, 2012 5:21 PM
To: [email protected]<mailto:[email protected]>
Subject: [MonoTouch] Crash problem
Can anyone shed light on this fault - looks to be a problem in dismissing an
action sheet, but it doesn't appear to be a problem in my code. It's relatively
random.
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_INVALID_ADDRESS at 0xc06fa6c8
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x32ced32c __pthread_kill + 8
1 libsystem_c.dylib 0x30b3f208 pthread_kill + 48
2 libsystem_c.dylib 0x30b38298 abort + 88
3 ...rLogicFlashValetiPhoneValet
0x00d6c62c mono_handle_native_sigsegv (mini-exceptions.c:2255)
4 ...rLogicFlashValetiPhoneValet
0x00d4f544 mono_sigsegv_signal_handler (mini.c:5923)
5 libsystem_c.dylib 0x30b497e6 _sigtramp + 42
6 UIKit 0x32425c14 -[UITabBar(UITabBarInternal)
_alertWillShow:duration:] + 628
7 UIKit 0x322e0fe0 -[UIActionSheet(Private)
_slideSheetOut:] + 980
8 UIKit 0x322e0b9c -[UIActionSheet
dismissWithClickedButtonIndex:animated:] + 964
9 UIKit 0x322e07c6 -[UIActionSheet(Private)
_buttonClicked:] + 290
10 CoreFoundation 0x36eae3f6 -[NSObject
performSelector:withObject:withObject:] + 46
11 UIKit 0x321c1fa8 -[UIApplication
sendAction:to:from:forEvent:] + 56
12 UIKit 0x321c1f64 -[UIApplication
sendAction:toTarget:fromSender:forEvent:] + 24
13 UIKit 0x321c1f42 -[UIControl
sendAction:to:forEvent:] + 38
14 UIKit 0x321c1cb2 -[UIControl(Internal)
_sendActionsForEvents:withEvent:] + 486
15 UIKit 0x321c25ea -[UIControl
touchesEnded:withEvent:] + 470
16 UIKit 0x321c0acc -[UIWindow _sendTouchesForEvent:]
+ 312
17 UIKit 0x321c04ba -[UIWindow sendEvent:] + 374
18 UIKit 0x321a6836 -[UIApplication sendEvent:] + 350
19 UIKit 0x321a60dc _UIApplicationHandleEvent + 5820
20 GraphicsServices 0x32f53224 PurpleEventCallback + 876
21 CoreFoundation 0x36f2851c
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
22 CoreFoundation 0x36f284be __CFRunLoopDoSource1 + 134
23 CoreFoundation 0x36f2730c __CFRunLoopRun + 1364
24 CoreFoundation 0x36eaa49e CFRunLoopRunSpecific + 294
25 CoreFoundation 0x36eaa366 CFRunLoopRunInMode + 98
26 GraphicsServices 0x32f52432 GSEventRunModal + 130
27 UIKit 0x321d4e76 UIApplicationMain + 1074
28 ...rLogicFlashValetiPhoneValet
0x004cc47c
wrapper_managed_to_native_MonoTouch_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr
(monotouch.dll.6.s:47515)
29 ...rLogicFlashValetiPhoneValet
0x0086db24 KleverLogic_FlashValet_iPhone_Valet_Application_Main_string__
(KleverLogicFlashValetiPhoneValet.exe.6.s:489)
30 ...rLogicFlashValetiPhoneValet
0x00c2dfc8
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
(mscorlib.dll.6.s:166630)
31 ...rLogicFlashValetiPhoneValet
0x00d51884 mono_jit_runtime_invoke (mini.c:5786)
32 ...rLogicFlashValetiPhoneValet
0x00e0a158 mono_runtime_invoke (object.c:2757)
33 ...rLogicFlashValetiPhoneValet
0x00e0e4f0 mono_runtime_exec_main (object.c:3932)
34 ...rLogicFlashValetiPhoneValet
0x00e13a58 mono_runtime_run_main (object.c:3562)
35 ...rLogicFlashValetiPhoneValet
0x00d5867c mono_jit_exec (driver.c:1112)
36 ...rLogicFlashValetiPhoneValet
0x00d4cad4 main (main.m:1716)
37 ...rLogicFlashValetiPhoneValet
0x000020fc start + 44
_______________________________________________
MonoTouch mailing list
[email protected]<mailto:[email protected]>
http://lists.ximian.com/mailman/listinfo/monotouch
_______________________________________________
MonoTouch mailing list
[email protected]
http://lists.ximian.com/mailman/listinfo/monotouch
