We are seeing a crash only in iOS5 which occurs during the .get_View()
method of the parent controller. Looking at the stack trace, it appears
that .get_view() is initializing child controls and calling their
constructors...
Oddly enough, part of the stack trace indicates that
DetailTextWebView..ctor(NSCoder) is being called, but the 'InstanceLog'
code (which is a simple wrapper around
System.Diagnostics.debug.WriteLine()) is NOT being called.
The stack trace follows, but does anyone have ideas as to what would be
causing this?
Background: We have a ViewController/.xib which contains a View, which in
turn contains a UIWebView.
-XIB
--- View
------ UIWebView
This UIWebView has the 'Class' defined in the property window to
'DetailTextWebView'.
The definition of the class is as follows:
==========================================
[MonoTouch.Foundation.Register("DetailTextWebView")]
public class DetailTextWebView : UIWebView
{
public DetailTextWebView (IntPtr handle) : base(handle) {}
[Export("initWithCoder:")]
public DetailTextWebView (NSCoder coder) : base(coder) {
InstanceLog.WriteLog("this code will not be reached");
}
public DetailTextWebView (RectangleF frame) :base(frame) {}
}
===========================================
We are seeing a crash only in iOS5 which occurs during the .get_View()
method of the parent controller. Looking at the stack trace, it appears
that .get_view() is initializing child controls and calling their
constructors...
Oddly enough, part of the stack trace indicates that
DetailTextWebView..ctor(NSCoder) is being called, but the 'InstanceLog'
code (which is a simple wrapper around
System.Diagnostics.debug.WriteLine()) is NOT being called.
The stack trace follows, but does anyone have ideas as to what would be
causing this?
Stack Trace
===========
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>:
Stacktrace:
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.Foundation.NSObject.InitializeObject (bool) <0x00093>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.Foundation.NSObject..ctor (MonoTouch.Foundation.NSObjectFlag)
<0x0002b>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.UIKit.UIResponder..ctor (MonoTouch.Foundation.NSObjectFlag)
<0x00023>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.UIKit.UIView..ctor (MonoTouch.Foundation.NSObjectFlag) <0x00023>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.UIKit.UIWebView..ctor () <0x0002b>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
LWBOJIPhone.DetailTextWebView..ctor (MonoTouch.Foundation.NSCoder) <IL
0x00001, 0x00083>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
(wrapper runtime-invoke) object.runtime_invoke_dynamic
(intptr,intptr,intptr,intptr) <0xffffffff>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.UIKit.UIViewController.get_View () <0x00097>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
LWBOJIPhone.BrowseViewController.SwitchToDetailView
(LWBOJIPhone.BrowseDataSource,LWBOJIPhone.IPBOJWS.BOJBookTerm) [0x00070]
in
/Users/stevem/Desktop/TFS/Source/BookOfJargon/Common/Interfaces/BrowseViewC
ontroller.xib.cs:77
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
LWBOJIPhone.BrowseViewController.<SwitchToListView>m__4
(LWBOJIPhone.IPBOJWS.BOJBookTerm) [0x00000] in
/Users/stevem/Desktop/TFS/Source/BookOfJargon/Common/Interfaces/BrowseViewC
ontroller.xib.cs:108
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
LWBOJIPhone.BrowseDataSource.RowSelected
(MonoTouch.UIKit.UITableView,MonoTouch.Foundation.NSIndexPath) [0x0002d]
in
/Users/stevem/Desktop/TFS/Source/BookOfJargon/Common/Support/BrowseDataSour
ce.cs:143
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
(wrapper runtime-invoke) object.runtime_invoke_dynamic
(intptr,intptr,intptr,intptr) <0xffffffff>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.UIKit.UIApplication.Main (string[],string,string) <0x000cf>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
MonoTouch.UIKit.UIApplication.Main (string[]) <0x00023>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
LWBOJIPhone.Application.Main (string[]) [0x00000] in
/Users/stevem/Desktop/TFS/Source/BookOfJargon/Common/Interfaces/Main.cs:15
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: at
(wrapper runtime-invoke) object.runtime_invoke_dynamic
(intptr,intptr,intptr,intptr) <0xffffffff>
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: Native
stacktrace:
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 0
LWBOJIPhone 0x004d9f5c mono_handle_native_sigsegv
+ 412
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 1
LWBOJIPhone 0x004bfe3c mono_sigsegv_signal_handler
+ 360
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 2
libsystem_c.dylib 0x33732441 _sigtramp + 48
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 3
LWBOJIPhone 0x00636540 monotouch_retain_trampoline
+ 48
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 4
LWBOJIPhone 0x0009f438
wrapper_managed_to_native_MonoTouch_ObjCRuntime_Messaging_void_objc_msgSend
_intptr_intptr + 68
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 5
LWBOJIPhone 0x0007b7f4
MonoTouch_Foundation_NSObject__ctor_MonoTouch_Foundation_NSObjectFlag + 44
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 6
LWBOJIPhone 0x000857f8
MonoTouch_UIKit_UIResponder__ctor_MonoTouch_Foundation_NSObjectFlag + 36
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 7
LWBOJIPhone 0x0008979c
MonoTouch_UIKit_UIView__ctor_MonoTouch_Foundation_NSObjectFlag + 36
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 8
LWBOJIPhone 0x0008b054
MonoTouch_UIKit_UIWebView__ctor + 44
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 9
LWBOJIPhone 0x000de918 methods + 39192
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 10
LWBOJIPhone 0x0042737c
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_i
ntptr + 200
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 11
LWBOJIPhone 0x004bfaa4 mono_jit_runtime_invoke +
2800
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 12
LWBOJIPhone 0x005ae778 mono_runtime_invoke + 140
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 13
LWBOJIPhone 0x006355e8 monotouch_ctor_trampoline +
2948
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 14
UIKit 0x37e92d93 -[UIClassSwapper
initWithCoder:] + 218
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 15
Foundation 0x36e238d3 _decodeObjectBinary + 2698
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 16
Foundation 0x36e22d19 _decodeObject + 204
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 17
UIKit 0x37e929b9 -[UIRuntimeConnection
initWithCoder:] + 152
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 18
Foundation 0x36e238d3 _decodeObjectBinary + 2698
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 19
Foundation 0x36e2764f -[NSKeyedUnarchiver
_decodeArrayOfObjectsForKey:] + 1102
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 20
Foundation 0x36e270d3 -[NSArray(NSArray)
initWithCoder:] + 502
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 21
Foundation 0x36e238d3 _decodeObjectBinary + 2698
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 22
Foundation 0x36e22d19 _decodeObject + 204
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 23
UIKit 0x37e92145 -[UINib
instantiateWithOwner:options:] + 664
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 24
UIKit 0x37df236b -[UIViewController
_loadViewFromNibNamed:bundle:] + 246
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 25
UIKit 0x37da76e5 -[UIViewController
loadView] + 88
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 26
UIKit 0x37c8a547 -[UIViewController view] +
50
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 27
LWBOJIPhone 0x0009f8b0
wrapper_managed_to_native_MonoTouch_ObjCRuntime_Messaging_IntPtr_objc_msgSe
ndSuper_intptr_intptr + 68
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 28
LWBOJIPhone 0x000db9ec methods + 27116
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 29
LWBOJIPhone 0x000dc204 methods + 29188
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 30
LWBOJIPhone 0x000eb55c methods + 91484
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 31
LWBOJIPhone 0x0042737c
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_i
ntptr + 200
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 32
LWBOJIPhone 0x004bfaa4 mono_jit_runtime_invoke +
2800
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 33
LWBOJIPhone 0x005ae778 mono_runtime_invoke + 140
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 34
LWBOJIPhone 0x00634368 monotouch_trampoline + 2840
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 35
UIKit 0x37ca75c9 -[UITableView
_selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 944
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 36
UIKit 0x37d0a8fb -[UITableView
_userSelectRowAtPendingSelectionIndexPath:] + 158
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 37
Foundation 0x36e8ed4f __NSFireDelayedPerform + 414
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 38
CoreFoundation 0x33c50f3f
__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 14
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 39
CoreFoundation 0x33c50ba5 __CFRunLoopDoTimer + 364
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 40
CoreFoundation 0x33c4f553 __CFRunLoopRun + 1206
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 41
CoreFoundation 0x33bf0f79 CFRunLoopRunSpecific + 300
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 42
CoreFoundation 0x33bf0e41 CFRunLoopRunInMode + 104
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 43
GraphicsServices 0x3410a125 GSEventRunModal + 156
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 44
UIKit 0x37c4d479 UIApplicationMain + 1080
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 45
LWBOJIPhone 0x000a212c
wrapper_managed_to_native_MonoTouch_UIKit_UIApplication_UIApplicationMain_i
nt_string___intptr_intptr + 240
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 46
LWBOJIPhone 0x00081d88
MonoTouch_UIKit_UIApplication_Main_string__ + 36
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 47
LWBOJIPhone 0x000f0050 methods + 110672
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 48
LWBOJIPhone 0x0042737c
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_i
ntptr + 200
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 49
LWBOJIPhone 0x004bfaa4 mono_jit_runtime_invoke +
2800
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 50
LWBOJIPhone 0x005ae778 mono_runtime_invoke + 140
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 51
LWBOJIPhone 0x005b1728 mono_runtime_exec_main + 784
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 52
LWBOJIPhone 0x005b078c mono_runtime_run_main + 1048
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 53
LWBOJIPhone 0x004c7254 mono_jit_exec + 216
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 54
LWBOJIPhone 0x004ba070 main + 3520
Jul 29 11:45:55 Steve-Mentzers-iPad
UIKitApplication:com.lw.bookofjargoniphone[0x2370][404] <Notice>: 55
LWBOJIPhone 0x00002eb4 start + 40
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