I've been looking at crash logs generated by an iphone app today:
Thread 0 Crashed:
0 libobjc.A.dylib 0x3002d7da 0x3002b000 + 10202
1 UIKit 0x31ec4abc 0x31e4d000 + 490172
2 UIKit 0x31ebd214 0x31e4d000 + 459284
3 UIKit 0x31ebcfac 0x31e4d000 + 458668
Can anyone tell me what the hex addresses mean? (memory addresses, sure..)
I know how to symbolicate to produce:
0 libobjc.A.dylib 0x000027da objc_msgSend + 18
1 UIKit 0x00077abc -[UINavigationController _startDeferredTransitionIfNeeded] + 176
2 UIKit 0x00070214 -[UINavigationController pushViewController:transition:forceImmediate:] + 600
3 UIKit 0x0006ffac -[UINavigationController pushViewController:animated:] + 28
and debug the crash from there, but I'm curious; if you take
0x3002d7da 0x3002b000 + 10202
then: 0x3002d7da = 0x3002b000 + (decimal) 10202
What does this signify exactly?
I should add I'm not looking for info on how to symbolicate, thx!
EDIT: what is also strange to me is that if you compare pre and post symbolicated versions, then for code I wrote:
9 memleaktest 0x00002ffe 0x1000 + 8190
becomes
9 memleaktest 0x00002ffe -[memleaktestViewController buttonOne] (memleaktestViewController.m:24)
makes sense, but for framework code:
8 CoreFoundation 0x307fe52c 0x307f8000 + 25900
becomes
8 CoreFoundation 0x0000652c -[NSObject(NSObject) release] + 24
the address and offset has changed? Why would this be?
if you take
0x3002d7da 0x3002b000 + 10202
What does this signify exactly?
In this case, the "+" doesn't signify addition so much. What this line is telling you is:
The routine/library in question starts at address 0x3002b000
Your line-of-code in the stack trace happened 10202 bytes into it.
The sum of those two numbers = 0x3002d7da
(Put another way, as you did, 0x3002d7da = 0x3002b000 + 10202.)
The important thing about which you might care is the start address of the method being called.
But, really, you can ignore all of that, since it's not nearly as useful as the symbolicated version, which gives you source-file name & line-number.
Extending Olie's response on the "symbolicated version" of the app: The debugging information is stripped from the distribution version of the app to make it smaller and also to protect the developer's intellectual property (so you can't see class and method names).
In order to decrypt the log, you need to have the debugging symbols file associated with the specific build that created the crash log.
This file (.dSYM extension) will be present in the build folder where the binary of the iPhone app is also located. Please note that you need the .dSYM file for the specific compilation that was used to compile the app on the phone - the dSYM file is timestamped, so if you recompile the app, the dSYM file will change even if you don't change a line of code.
Once you have this file on your computer, drag the crash file into xcode (or view logs from attached devices in the Organiser), which will give you a stack trace of the methods called and the specific lines of code called which led to the crash.
Related
During the app startup, I show a table view. Each row shows a managed object's data in some form. One customer is reporting a crash in the app startup. I looked at his crash log and could track down to a place where I use [NSManagedObject valueForKey:] method inside cellForRowAtIndexPath method. The app crashes with [NSManagedObject valueForUndefinedKey:] exception.
How come just one device in a 1000s of devices could get this issue? Running the same version of iOS and the app, I couldn't imitate it in any of my devices. what could have gone wrong?
Last Exception Backtrace:
0 CoreFoundation 0x3549e88f __exceptionPreprocess + 163
1 libobjc.A.dylib 0x368c5259 objc_exception_throw + 33
2 CoreFoundation 0x3549e5c5 -[NSException init] + 1
3 CoreData 0x329d3b23 -[NSManagedObject valueForUndefinedKey:] + 327
4 Foundation 0x312b59d1 _NSGetUsingKeyValueGetter + 125
5 CoreData 0x3298d995 -[NSManagedObject valueForKey:] + 121
6 MyApp 0x0000c513 -[Activity isOn:] (Activity.m:371)
7 MyApp 0x0000beaf -[Activity firstMarkableDate] (Activity.m:163)
8 MyApp 0x0000c0cb -[Activity statusString] (Activity.m:220)
9 MyApp 0x0000bd51 -[Activity statusColor] (Activity.m:139)
10 MyApp 0x00004af1 -[ActivityListViewController tableView:cellForRowAtIndexPath:] (ActivityListViewController.m:418)
11 UIKit 0x3251d0a3 -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:withIndexPath:] + 547
This may be a memory management issue. See -[Activity isOn:] where it invokes valueForKey:. The object you send valueForKey: is apparently of the wrong class. See where the object is coming from.
The object may get over-released and its memory address may get occupied by an object of a different class which isn't KVO-compliant for trackname key. If that's the case, I would bet that your app gets EXC_BAD_ACCESS even more often.
Why would that happen? NSManagedObjects have many subtleties with regard to their lifetime. They may get deleted in other parts of your app, for example, so you should always expect that and act appropriately.
I hope this will point you in the right direction.
I'm getting a crash that, to me, seems as though it is a bug in the way that Apple is handling the goToDefaultLocation message of MKMapView. That message in turn calls [ALCityManager localeWithCode:], which calls [NSLocale componentsFromLocaleIdentifier:] which calls CFLocaleCreateComponentsFromLocaleIdentifier which calls CFStringGetLength and the crash occurs.
Can someone help to point me in the direction of either fixing the bug, if it is my code that is causing this, or, helping me find a workaround if, in fact, this is a bug in Apple's code (unlikely??).
Crash log below:
Incident Identifier: 84198BB6-45BD-493B-955F-75CCB5246DDD
CrashReporter Key: 7dbf53bf1f1a3635d7c3c49e726dedc609ed9f3a
Hardware Model: iPhone3,1
Process: MyApp [340]
Path: /var/mobile/Applications/DCE9A5A1-8E24-4D4F-A1ED-9855C6CA1742/MyApp.app/MyApp
Identifier: MyApp
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2011-03-25 10:36:06.382 -0700
OS Version: iPhone OS 4.3 (8F190)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x00000000
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 CoreFoundation 0x00009a66 CFStringGetLength + 6
1 CoreFoundation 0x0002f994 CFLocaleCreateComponentsFromLocaleIdentifier + 60
2 CoreFoundation 0x000483b8 +[NSLocale componentsFromLocaleIdentifier:] + 12
3 AppSupport 0x00016eee -[ALCityManager localeWithCode:] + 130
4 MapKit 0x00038488 -[MKMapView goToDefaultLocation] + 80
5 Foundation 0x000907c6 __NSFireTimer + 130
6 CoreFoundation 0x00075a40 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 8
7 CoreFoundation 0x00077ec4 __CFRunLoopDoTimer + 844
8 CoreFoundation 0x0007883e __CFRunLoopRun + 1082
9 CoreFoundation 0x00008ebc CFRunLoopRunSpecific + 224
10 CoreFoundation 0x00008dc4 CFRunLoopRunInMode + 52
11 GraphicsServices 0x00004418 GSEventRunModal + 108
12 GraphicsServices 0x000044c4 GSEventRun + 56
13 UIKit 0x0002ed62 -[UIApplication _run] + 398
14 UIKit 0x0002c800 UIApplicationMain + 664
15 MyApp 0x000023f0 main (main.m:34)
16 MyApp 0x00002370 start + 44
I got exactly the same crash reports, ONLY with iOS 4.3 / 4.3.1 AND iPhone 3GS/4 (armv7)
I think it is an Apple Bug, iOS4.3 has others ugly regressions concerning MapKit. (like the MKReverseGeocoder early releasing crash...)
An easy workaround would be to override -[MKMapView goToDefaultLocation] but at the risk of an Apple rejection since it is a private API... (Rejected for a bug workaround... I know... People are mean)
Another solution would be to analyze (reverse...) CFLocaleCreateComponentsFromLocaleIdentifier and componentsFromLocaleIdentifier: and [ALCityManager localeWithCode:] to understand how it can crash, being called with a nil locale identifier and maybe fix application locale programmatically, since it looks like the error coming from determining user's locale from device settings (or worse, from city/geolocation)... or at least WARN user that its locale settings might cause troubles...
Something I just can not(/want to) do, not being able to reproduce that bug.
Well your exception code is EXC_BAD_ACCESS. This is generally a memory-management error (i.e. some bit of code tried to access an object that had already been released/dealloc'ed).
It is possible but very unlikely that this is a bug in Apple/framework code. It's more likely that somewhere in your code you are either over-releasing something or hanging on to an auto-released object instance or otherwise accessing something that shouldn't be accessed.
Given that the crash happened in MapKit, I'd recommend looking at your map-related code for possible sources of this crash. Note that MapKit can be a bit tempermental; I've seen crashes in cases such as attempting to access the LocationManager's current-location when the user has location-services turned off. I'd expect such a case to fail (for instance, by returning a nil location), but not to crash the app.
Just spent some time... on a crash, without understanding it. That's a classic:
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x00000010
Which leads me to a memory issue, addressing the invalid adress 0x10
What bothers me is that I have crash report and stack trace, which differ:
The crash report, sent by user (symbolicated successfully, that happens) :
Thread 0 Crashed:
0 libobjc.A.dylib 0x000027d8 objc_msgSend + 16
1 UIKit 0x0005e9d2 -[UIViewAnimationState animationDidStop:finished:] + 54
2 QuartzCore 0x0002d8c2 run_animation_callbacks(double, void*) + 286
3 QuartzCore 0x0002d764 CA::timer_callback(__CFRunLoopTimer*, void*) + 116
4 CoreFoundation 0x000567f4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 8
5 CoreFoundation 0x000562a6 __CFRunLoopDoTimer + 854
6 CoreFoundation 0x0002779e __CFRunLoopRun + 1082
7 CoreFoundation 0x00027270 CFRunLoopRunSpecific + 224
8 CoreFoundation 0x00027178 CFRunLoopRunInMode + 52
9 GraphicsServices 0x000045ec GSEventRunModal + 108
10 GraphicsServices 0x00004698 GSEventRun + 56
11 UIKit 0x0000411c -[UIApplication _run] + 396
12 UIKit 0x00002128 UIApplicationMain + 664
13 MyApp 0x00003158 main (main.m:13)
14 MyApp 0x00003120 0x1000 + 8480
The crash stack trace (catched live by an Exception Handler)
0 MyApp 0x000d79c3 0x0 + 883139
1 MyApp 0x000d790b 0x0 + 882955
2 libSystem.B.dylib 0x302765d3 _sigtramp + 42
3 UIKit 0x31eab9d9 -[UIViewAnimationState animationDidStop:finished:] + 60
4 QuartzCore 0x33a178c9 _ZL23run_animation_callbacksdPv + 292
5 QuartzCore 0x33a1776b _ZN2CAL14timer_callbackEP16__CFRunLoopTimerPv + 122
6 CoreFoundation 0x3084e7fb __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 14
7 CoreFoundation 0x3084e2ad __CFRunLoopDoTimer + 860
8 CoreFoundation 0x3081f7a5 __CFRunLoopRun + 1088
9 CoreFoundation 0x3081f277 CFRunLoopRunSpecific + 230
10 CoreFoundation 0x3081f17f CFRunLoopRunInMode + 58
11 GraphicsServices 0x31e445f3 GSEventRunModal + 114
12 GraphicsServices 0x31e4469f GSEventRun + 62
13 UIKit 0x31e51123 -[UIApplication _run] + 402
14 UIKit 0x31e4f12f UIApplicationMain + 670
15 MyApp 0x0000315f 0x0 + 12639
16 MyApp 0x00003128 0x0 + 12584
Both differ, and the stack trace points to the crash in my code, but at addresses I can neither symbolicate nor identify. I think the crash report indicates that a message was sent to a released instance... Probably related to the use of :
+ (void)setAnimationDelegate:(id)delegate
+ (void)setAnimationDidStopSelector:(SEL)selector
So here (finally!) are my questions:
What explains the differences between logs? (libobjc.A vs libSystem.B ??)
Does the SIGBUS comes from my code or from UIKit?
How can I decipher the stack trace upper addresses (0x000d79??, which atos doesn't resolve)
Is that what I think, an issue related to an animation failing to end? similar to this > How to unset delegate on UIView setAnimationDelegate: call?
AFAIK, setAnimationDelegate is supposed to retain delegate... Someone to confirm?
EDIT: I can't use NSZombiesEnabled, this is a crash report from a published app, a crash that I didn't manage to reproduce on development environment. I just have these logs to diagnose.
Whenever I see objc_msgSend at the top, my trust of the remaining stack is low, as the error that gives this tends to do bad things to the stack.
GuardMalloc is good for this since the attempt to do anything with deallocated space will crash the app immediately in the debugger. The stack will be intact. (This makes the app very slow, but it is a very powerful tool.)
The two stacks are the same up to the UIViewAnimationState method call. The version that came from your exception handler is showing C++ mangled names instead of the regular names shown in the crash log.
(As I understand it) _sigtramp is the system's method of calling your signal handler and is short for Signal Trampoline. The stack entries beyond that are probably your signal-handler code.
Answering my own question, weeks laters, since I had no relevant answers, most are guesses, I wished I had more precise answers, but I guess my question was unclear :
Difference is coming from the origin of the log, a sighandler vs CrashReporter service, which are happening at different times, then the stack traces are slightly different.
SIGBUS comes from UIKit, but chances are big that's on a callback initiated from my code that ends on a released object. These kind of stack traces are a pain to debug when you can't reproduce the issue, since it basically tells you "I'm crashing somewhere because of an animation", which one, where... I still didn't figured precisely. Could be anywhere, and also could be an Apple iOS bug.
The first addresses in the stack are just a dead-end where any SIGBUS stack-trace ends when a released object is called. They differs across compilations (versions), but are the same on any device, That's why they can't be symbolicated. (I would love to have a technical explanation of this, instead of my guess)
& 5. I guess I solved this bug byt being more "agressive" on canceling animations in certain cases like on deallocation of some Views...
Hope that helps someone.
You should try NSZombie, to get information about what object you've released. This is a very useful tool when you get EXC_BAD_ACCESS.
To activate NSZombie do the following:
Get info of the executable.
Go to the arguments tab.
In the "Variables to be set in the environment:" section add:
Name: NSZombieEnabled
Value: YES
Then run your app as usual and when it crashes it should tell you which deallocated object received the message.
1. I'm not 100% sure but I think the discrepancy is due to how the application is being run. In the second log it looks like you're running the application via XCode in debug mode, a sigtramp signal has been sent to indicate a EXC_BAD_ACCESS error.
2. Your code - the error may come from the UIKit library but it's a result of a problem with your usage.
3. This is where NSZombieEnabled will make your life a lot easier! If you run your application with the NSZombieEnabled flag set XCode will keep 'zombie' objects in place of deallocated objects. When a zombie object is sent a message the process will trap the error and let you know exactly what object was sent the message.
If you're using XCode 4 enable NSZombieEnabled using the following instructions...
How do I set up NSZombieEnabled in Xcode 4?
For older versions follow these instructions...
http://www.cocoadev.com/index.pl?NSZombieEnabled
4. It does indeed appear that your animation delegate has been deallocated prior to the animation completing.
This question already has answers here:
Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant for the key X" error?
(79 answers)
Closed 7 years ago.
When i run my app on simulator it runs well, when i try with device doesn't work and i get these errors:
NOTE: i didn't find any kind of class authView in my code
2011-02-24 12:04:14.472 TestP[473:307] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<TestP 0x19d2b0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key authView.'
*** Call stack at first throw:
(
0 CoreFoundation 0x33ac0987 __exceptionPreprocess + 114
1 libobjc.A.dylib 0x3347b49d objc_exception_throw + 24
2 CoreFoundation 0x33ac0705 -[NSException dealloc] + 0
3 Foundation 0x3367db4f -[NSObject(NSKeyValueCoding) setValue:forUndefinedKey:] + 182
4 Foundation 0x3367d03b _NSSetUsingKeyValueSetter + 90
5 Foundation 0x3367eda3 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 194
6 Foundation 0x33630b17 -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 130
7 UIKit 0x3224c60f -[UIRuntimeOutletConnection connect] + 66
8 CoreFoundation 0x33a63fc7 -[NSObject(NSObject) performSelector:] + 18
9 CoreFoundation 0x33a6cd51 -[NSArray makeObjectsPerformSelector:] + 388
10 UIKit 0x3224b577 -[UINib instantiateWithOwner:options:] + 586
11 UIKit 0x3224cb39 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 92
12 UIKit 0x3209e871 -[UIApplication _loadMainNibFile] + 96
13 UIKit 0x3209a1fd -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 180
14 UIKit 0x3206648b -[UIApplication handleEvent:withNewEvent:] + 1114
15 UIKit 0x32065ec9 -[UIApplication sendEvent:] + 44
16 UIKit 0x32065907 _UIApplicationHandleEvent + 5090
17 GraphicsServices 0x33b0ef03 PurpleEventCallback + 666
18 CoreFoundation 0x33a556ff __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
19 CoreFoundation 0x33a556c3 __CFRunLoopDoSource1 + 166
20 CoreFoundation 0x33a47f7d __CFRunLoopRun + 520
21 CoreFoundation 0x33a47c87 CFRunLoopRunSpecific + 230
22 CoreFoundation 0x33a47b8f CFRunLoopRunInMode + 58
23 UIKit 0x32099309 -[UIApplication _run] + 380
24 UIKit 0x32096e93 UIApplicationMain + 670
25 TestP 0x00002213 main + 98
26 TestP 0x000021ac start + 40
)
terminate called after throwing an instance of 'NSException'
You've probably got your File's Owner stuff messed up in your xibs. This exception is getting thrown during nib unarchiving (as evidenced by +[UINib...] in the backtrace). It's attempting to hook up your IBOutlets that you defined.
One of your views is set up to be the authView of the the File's Owner. However, when it's time to unarchive the nib, the owner doesn't have an authView property, so the unarchiving is failing.
#Dave DeLong pointed out right.
Workaround
Find when the exception thrown, which viewController is being loaded.
Then check the nib file of the viewController, there must be an IBOutlet attached in xib but might be missed in the viewController.h file or might be some control which was attached is missing in xib file.
Why running in Simulator? Sometimes it ends in messing up.
Just do the steps
Build -> Clean
Build -> Clean All Targets
Now it runs the real code, may be issue got resolve on device also or may be it start throwing exception on simulator also in case if there is really an issue. (I already have mentioned workaround)
This is how I solved this problem. I went into my 'Story Board' file and selected the view that was causing the problems. I then clicked on the Connections Inspector tab and you will see connection(s) with exclamation points to the right instead of solid circles. Remove these and make adjustments if necessary. Save>Run your app and should work. Hope this helps :)
I think that one possible cause for raising that exception is when you have changed the name of some IBOutlet variable after the storyboard connections are already done. Thus the UI element in the storyboard is still referencing to the old variable name. I solved this for me by checking the XML representation of the storyboard (Right click on your .storyboard file and open it as Source Code) and deleting the old (unneeded) IBOutlet variable name.
For example let say you have one UITextField on the storyboard and have the corresponding property for it:
#property (retain, nonatomic) IBOutlet UItextField *myTextField;
You connect the UI element in the storyboard to that property and then you decide to rename somehow the variable. Now if you right click on your UITextField in the storyboard, you will notice that there exists two referencing outlets - the old one and the new one. You can delete the old one by clicking 'x' sign in the Connections Inspector or by editing the XML variant of the storyboard file.
something went wrong when in xcode 4 with some reference , cause i declared IBOutlet that reference authView then run and it worked!, then i removed the IBOutlet declaration and worked well
I just cleaned the project and deleted the app from the device and it worked again. Error was referencing a view that i had already removed.
You have probably created an IBOutlet, then deleted it, then linked a new one, but in the xib 'Inspector' you forgot to delete the link and now have a duplicate IBOutlet ref that the compiler cannot find.
i have found these errors arise mostly when you connect properties, edit them, and connect them again.. analyse your connection inspector for unexpected values, that remain from your previously created and destroyed connection.
In my case it was even more spooky. I had a XIB associated to the VC that I had removed completely as went for code-only. Run on Simulator nicely but would crash on Device systematically.
So I clean, rebuild, closed XCode, went for a snack and shout at the mac. Nothing, the compiler kept pointing to an inexistent button on an inexistent XIB.
Tried by changing the name of the class and that worked!
It seems that your Interface Builder did not work properly.
As suggested before, try by cleaning and rebuild. If it doesn´t work, I´d suggest you to re-create your xib interface. It worked for me in a similar occasion.
I have an application that has been running fine since its launch over a year ago.
I developed it with iphone iOS 2.2.1 originally and tested and kept selling it up until 3.2 without issues.
Now it fails to launch with iOS4.
the app uses a non standard size for a UIPickerView (I don't think that's the problem but just mention it as you will see some complaint in the console output). It's also giving previously non reported NSAutoreleasePool warnings.
But the culprit seems to be when resizing the interface to the new iphone screen resolution (at least what I get from the console)
I know I have to do some research of my own but iOS4 has been out for so little and I have been very absorbed learning and developing my first app for android (so I have not tested this particular code, after a year+ this app only sells a few copies a day) that I thought it didn't harm to ask around here to check if someone has some info or has run into it already.
First, this is the console output when build and run with XCODE 3.2.3 and BASE SDK 3.2, runs without problem
2010-06-22 23:25:55.619 metalsandmaterials[82956:207] ******* Accessibility Status Changed: On
2010-06-22 23:25:55.710 metalsandmaterials[82956:207] ********** Loading AX for: xxxxxxxxx
But trying to run it with iOS4 gives this beauty:
2010-06-22 23:15:52.488 metalsandmaterials[80149:207] ******* Accessibility Status Changed: On
2010-06-22 23:15:52.546 metalsandmaterials[80149:207] ********** Loading AX for: XXXXXXX ************
2010-06-22 23:15:53.003 metalsandmaterials[80149:207] * -[NSAutoreleasePool release]: This pool has already been released, do not drain it (double release).
2010-06-22 23:15:53.005 metalsandmaterials[80149:207] * -[NSAutoreleasePool release]: This pool has already been released, do not drain it (double release).
2010-06-22 23:15:53.008 metalsandmaterials[80149:207] -[UIPickerView setFrame:]: invalid height value 50.0 pinned to 162.0
Right here! [UIIageView scale]
2010-06-22 23:15:53.011 metalsandmaterials[80149:207] -[UIImageView scale]: unrecognized selector sent to instance 0x5ac47a0
2010-06-22 23:15:53.013 metalsandmaterials[80149:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIImageView scale]: unrecognized selector sent to instance 0x5ac47a0'
Call stack at first throw:
(
0 CoreFoundation 0x025f5919 exceptionPreprocess + 185
1 libobjc.A.dylib 0x027435de objc_exception_throw + 47
2 CoreFoundation 0x025f742b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x02567116 ___forwarding_ + 966
4 CoreFoundation 0x02566cd2 _CF_forwarding_prep_0 + 50
5 UIKit 0x0039a8e3 -[UIImageView setImage:] + 250
6 UIKit 0x0039b63e -[UIImageView initWithImage:] + 161
7 UIKit 0x05f286ce -[UIImageViewAccessibility(SafeCategory) initWithImage:] + 70
8 metalsandmaterials 0x0000bf09 -[TVCResults init] + 1841
9 metalsandmaterials 0x00002b8c -[UIVCalcHolder init] + 258
10 metalsandmaterials 0x00002758 -[CalcTestAppDelegate applicationDidFinishLaunching:] + 649
11 UIKit 0x002d759c -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1252
12 UIKit 0x002d99a1 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 346
13 UIKit 0x002e3452 -[UIApplication handleEvent:withNewEvent:] + 1958
14 UIKit 0x002dc074 -[UIApplication sendEvent:] + 71
15 UIKit 0x002e0ac4 _UIApplicationHandleEvent + 7495
16 GraphicsServices 0x02de1afa PurpleEventCallback + 1578
17 CoreFoundation 0x025d6dc4 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 52
18 CoreFoundation 0x02537737 __CFRunLoopDoSource1 + 215
19 CoreFoundation 0x025349c3 __CFRunLoopRun + 979
20 CoreFoundation 0x02534280 CFRunLoopRunSpecific + 208
21 CoreFoundation 0x025341a1 CFRunLoopRunInMode + 97
22 UIKit 0x002d9226 -[UIApplication _run] + 625
23 UIKit 0x002e4b58 UIApplicationMain + 1160
24 metalsandmaterials 0x000024ac main + 230
25 metalsandmaterials 0x000023bd start + 53
26 ??? 0x00000001 0x0 + 1
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
kill
kill
So this scale method is new to uiimageview? why wouldn't it work? has anyone run into this already?
ANY HELP IS EXTREMELY APPRECIATED
best regards
david
You get a message "xxxxxx does not recognize selector yyyyyy" usually when an object has been released but you are still trying to use it. At that point because the memory is random, the system thinks it's some other random kind of object (like UIImage). Thus it's a red herring, a sign that something else is wrong and you are over-releasing an object.
There's no way you are getting those weird autorelease messages unless you are doing SOMETHING with a custom autorelease pool. Fess up, what are you doing with an NSAutoreleasePool in your code?
I think they are probably related to the "does not recognize selector" messages since you may be over-releasing things because of this.
Well, for your first issue with the NSAutoreleasePool, I would use instruments so you can trace where the extra drains/releases are coming from.
Your second issue doesNotRecognizeSelector is telling you that the selector that is being called doesn't exist (or lost scope). I would use the debugger so you can, again, trace that code execution.
Ok, I left if at adding a -(void)scale to a subclass of UIImageView and using this new class. Tested it, works fine on 2.2.1, 3.2 and ios4, both on simulator, iphone touch 3g with ios4 and ipad with ios3.2.
I still need to get ahold of an iphone4 and see if some weird layout problem comes across (I still believe the problems appeared when the Os want to blow things up to the new retina display).
Not being in the US is going to make it a tad hard though
Could I be that you somewhere set the image property of an imageView to another UIImageView (as opposed to an UIImage)?
After all UIImageView does not respond to :scale, but UIImage does.