Preface:
* iPad project
* Single viewcontroller, which in turn contains a single UIWebView
* UIWebView class name is set to 'MyWebView'
* Project contains instance of 'MyWebView' class (source code below)
* Crash occurs – stack trace below
* Issue only occurs in iOS5 (beta 4 or 5). iOS 4 works fine.
Before you see the very simple, boilerplate code for MyWebView, the problem is
entirely resolved by omitting the following line:
[Export("initWithCoder:")]
Is there something strange with the ctor for initWithCoder: being exported for
UIWebView? Is this is known issue?
This is the child class that is causing the crash…
[MonoTouch.Foundation.Register("MyWebView")]
public class MyWebView : UIWebView
{
public MyWebView (IntPtr handle) : base(handle)
{
Initialize ();
}
public MyWebView(RectangleF frame) : base(frame)
{
Initialize();
}
[Export("initWithCoder:")]
public MyWebView (NSCoder coder) : base(coder)
{
Console.WriteLine("asd");
Initialize ();
}
void Initialize ()
{
}
#endregion
}
And this is the stack trace…
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: Stacktrace:
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.Foundation.NSObject.InitializeObject (bool) <0x00093>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.Foundation.NSObject..ctor
(MonoTouch.Foundation.NSObjectFlag) <0x0002b>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.UIKit.UIResponder..ctor
(MonoTouch.Foundation.NSObjectFlag) <0x00023>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.UIKit.UIView..ctor (MonoTouch.Foundation.NSObjectFlag)
<0x00023>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.UIKit.UIWebView..ctor (MonoTouch.Foundation.NSCoder)
<0x00033>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at CrashTest.MyWebView..ctor (MonoTouch.Foundation.NSCoder) <IL
0x00002, 0x00087>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at (wrapper runtime-invoke) object.runtime_invoke_dynamic
(intptr,intptr,intptr,intptr) <0xffffffff>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.UIKit.UIViewController.get_View () <0x00097>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at CrashTest.AppDelegate.FinishedLaunching
(MonoTouch.UIKit.UIApplication,MonoTouch.Foundation.NSDictionary) [0x00006] in
/Users/stevem/Projects/CrashTest/CrashTest/Main.cs:28
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at (wrapper runtime-invoke) object.runtime_invoke_dynamic
(intptr,intptr,intptr,intptr) <0xffffffff>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.UIKit.UIApplication.Main (string[],string,string)
<0x000cf>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at MonoTouch.UIKit.UIApplication.Main (string[]) <0x00023>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at CrashTest.Application.Main (string[]) [0x00000] in
/Users/stevem/Projects/CrashTest/CrashTest/Main.cs:14
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: at (wrapper runtime-invoke) object.runtime_invoke_dynamic
(intptr,intptr,intptr,intptr) <0xffffffff>
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: Native stacktrace:
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 0 CrashTest 0x002022c0
mono_handle_native_sigsegv + 412
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 1 CrashTest 0x001e81a0
mono_sigsegv_signal_handler + 360
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 2 libsystem_c.dylib 0x3713a439 _sigtramp + 48
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 3 CrashTest 0x0035e8a4
monotouch_retain_trampoline + 48
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 4 CrashTest 0x0001fe34
wrapper_managed_to_native_MonoTouch_ObjCRuntime_Messaging_void_objc_msgSend_intptr_intptr
+ 68
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 5 CrashTest 0x00006954
MonoTouch_Foundation_NSObject__ctor_MonoTouch_Foundation_NSObjectFlag + 44
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 6 CrashTest 0x0000cb04
MonoTouch_UIKit_UIResponder__ctor_MonoTouch_Foundation_NSObjectFlag + 36
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 7 CrashTest 0x0000cbe0
MonoTouch_UIKit_UIView__ctor_MonoTouch_Foundation_NSObjectFlag + 36
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 8 CrashTest 0x0000d97c
MonoTouch_UIKit_UIWebView__ctor_MonoTouch_Foundation_NSCoder + 52
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 9 CrashTest 0x00003b68
CrashTest_MyWebView__ctor_MonoTouch_Foundation_NSCoder + 136
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 10 CrashTest 0x00160948
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
+ 200
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 11 CrashTest 0x001e7e08
mono_jit_runtime_invoke + 2800
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 12 CrashTest 0x002d6adc
mono_runtime_invoke + 140
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 13 CrashTest 0x0035d94c
monotouch_ctor_trampoline + 2948
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 14 UIKit 0x321572bf -[UIClassSwapper
initWithCoder:] + 218
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 15 Foundation 0x303a162b
_decodeObjectBinary + 2698
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 16 Foundation 0x303a53a7
-[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1102
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 17 Foundation 0x303a4e2b -[NSArray(NSArray)
initWithCoder:] + 502
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 18 Foundation 0x303a162b
_decodeObjectBinary + 2698
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 19 Foundation 0x303a0a71 _decodeObject + 204
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 20 UIKit 0x3207f9f1 -[UIView
initWithCoder:] + 560
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 21 Foundation 0x303a162b
_decodeObjectBinary + 2698
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 22 Foundation 0x303a0a71 _decodeObject + 204
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 23 UIKit 0x32156ee5
-[UIRuntimeConnection initWithCoder:] + 152
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 24 Foundation 0x303a162b
_decodeObjectBinary + 2698
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 25 Foundation 0x303a53a7
-[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1102
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 26 Foundation 0x303a4e2b -[NSArray(NSArray)
initWithCoder:] + 502
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 27 Foundation 0x303a162b
_decodeObjectBinary + 2698
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 28 Foundation 0x303a0a71 _decodeObject + 204
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 29 UIKit 0x32156671 -[UINib
instantiateWithOwner:options:] + 664
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 30 UIKit 0x320b2d8b -[UIViewController
_loadViewFromNibNamed:bundle:] + 246
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 31 UIKit 0x32066b7d -[UIViewController
loadView] + 88
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 32 UIKit 0x31f4a0b7 -[UIViewController
view] + 50
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 33 CrashTest 0x00020188
wrapper_managed_to_native_MonoTouch_ObjCRuntime_Messaging_IntPtr_objc_msgSendSuper_intptr_intptr
+ 68
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 34 CrashTest 0x00002c68
CrashTest_AppDelegate_FinishedLaunching_MonoTouch_UIKit_UIApplication_MonoTouch_Foundation_NSDictionary
+ 236
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 35 CrashTest 0x00160948
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
+ 200
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 36 CrashTest 0x001e7e08
mono_jit_runtime_invoke + 2800
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 37 CrashTest 0x002d6adc
mono_runtime_invoke + 140
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 38 CrashTest 0x0035c6cc
monotouch_trampoline + 2840
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 39 UIKit 0x31f25f23 -[UIApplication
_callInitializationDelegatesForURL:payload:suspended:] + 1186
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 40 UIKit 0x31f150ed -[UIApplication
_runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 396
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 41 UIKit 0x31f14039 -[UIApplication
handleEvent:withNewEvent:] + 1016
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 42 UIKit 0x31f13ad7 -[UIApplication
sendEvent:] + 54
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 43 UIKit 0x31f135f1
_UIApplicationHandleEvent + 5808
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 44 GraphicsServices 0x351e1efb
PurpleEventCallback + 882
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 45 CoreFoundation 0x3252f9cb
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 38
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 46 CoreFoundation 0x3252f96d
__CFRunLoopDoSource1 + 140
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 47 CoreFoundation 0x3252e593 __CFRunLoopRun +
1370
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 48 CoreFoundation 0x324d003d
CFRunLoopRunSpecific + 300
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 49 CoreFoundation 0x324cff05 CFRunLoopRunInMode
+ 104
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 50 UIKit 0x31f1175f -[UIApplication
_run] + 550
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 51 UIKit 0x31f0e991 UIApplicationMain
+ 1080
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 52 CrashTest 0x00021384
wrapper_managed_to_native_MonoTouch_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr
+ 240
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 53 CrashTest 0x0000c7ac
MonoTouch_UIKit_UIApplication_Main_string__ + 36
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 54 CrashTest 0x00002e7c
CrashTest_Application_Main_string__ + 128
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 55 CrashTest 0x00160948
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
+ 200
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 56 CrashTest 0x001e7e08
mono_jit_runtime_invoke + 2800
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 57 CrashTest 0x002d6adc
mono_runtime_invoke + 140
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 58 CrashTest 0x002d9a8c
mono_runtime_exec_main + 784
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 59 CrashTest 0x002d8af0
mono_runtime_run_main + 1048
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 60 CrashTest 0x001ef5b8 mono_jit_exec + 216
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 61 CrashTest 0x001e23e0 main + 3448
Aug 12 13:44:09 unknown UIKitApplication:com.lw.crashtest[0x2585][515]
<Notice>: 62 CrashTest 0x000027f0 start + 52
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