Ok, so this has me completely stumped just like the guy here with the exact problem.
I have a UITableView with some rows in a view controller which supports autorotation and sometimes, if i rotate the phone, i get “EXC_BAD_ACCESS” and sometimes i get SIGABRT with a stack trace like:
2010-11-19 16:51:05.634 [2306:307] -[CABasicAnimation numberOfSectionsInTableView:]: unrecognized selector sent to instance 0x58207d0
2010-11-19 16:51:05.688 [2306:307] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CABasicAnimation numberOfSectionsInTableView:]: unrecognized selector sent to instance 0x58207d0'
*** Call stack at first throw:
(
0 CoreFoundation 0x344aaed3 __exceptionPreprocess + 114
1 libobjc.A.dylib 0x33975811 objc_exception_throw + 24
2 CoreFoundation 0x344ac683 -[NSObject(NSObject) doesNotRecognizeSelector:] + 102
3 CoreFoundation 0x344541d9 ___forwarding___ + 508
4 CoreFoundation 0x34453f90 _CF_forwarding_prep_0 + 48
5 UIKit 0x31b20717 -[UITableViewRowData(UITableViewRowDataPrivate) _updateNumSections] + 66
6 UIKit 0x31b20677 -[UITableViewRowData invalidateAllSections] + 50
7 UIKit 0x31b2048d -[UITableView(_UITableViewPrivate) _updateRowData] + 64
8 UIKit 0x31b22941 -[UITableView(_UITableViewPrivate) _ensureRowDataIsLoaded] + 24
9 UIKit 0x31b22909 -[UITableView numberOfSections] + 16
10 UIKit 0x31bd114f -[UISearchDisplayController _updateNoSearchResultsMessageVisiblity] + 54
11 UIKit 0x31cfbef7 -[UISearchDisplayController windowWillAnimateRotation:] + 478
12 Foundation 0x3325d6b3 _nsnote_callback + 142
13 CoreFoundation 0x34431713 __CFXNotificationPost_old + 402
14 CoreFoundation 0x344313b3 _CFXNotificationPostNotification + 118
15 Foundation 0x3324cdb7 -[NSNotificationCenter postNotificationName:object:userInfo:] + 70
16 UIKit 0x31b5dbb7 -[UIWindow _setRotatableClient:toOrientation:duration:force:] + 3114
17 UIKit 0x31b64013 -[UIWindow _setRotatableViewOrientation:duration:force:] + 50
18 UIKit 0x31b39a0f -[UIWindow _updateToInterfaceOrientation:duration:force:] + 74
19 UIKit 0x31b39be9 -[UIWindow _updateInterfaceOrientationFromDeviceOrientation:] + 112
20 UIKit 0x31b39b15 -[UIWindow _handleDeviceOrientationChange:] + 88
21 Foundation 0x3325d6b3 _nsnote_callback + 142
22 CoreFoundation 0x34431713 __CFXNotificationPost_old + 402
23 CoreFoundation 0x344313b3 _CFXNotificationPostNotification + 118
24 Foundation 0x3324cdb7 -[NSNotificationCenter postNotificationName:object:userInfo:] + 70
25 UIKit 0x31b0d0ed -[UIDevice setOrientation:animated:] + 144
26 UIKit 0x31b2a51b -[UIApplication handleEvent:withNewEvent:] + 2738
27 UIKit 0x31b29901 -[UIApplication sendEvent:] + 44
28 UIKit 0x31b29337 _UIApplicationHandleEvent + 5110
29 GraphicsServices 0x3026c04b PurpleEventCallback + 666
30 CoreFoundation 0x3443fce3 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
31 CoreFoundation 0x3443fca7 __CFRunLoopDoSource1 + 166
32 CoreFoundation 0x3443256d __CFRunLoopRun + 520
33 CoreFoundation 0x34432277 CFRunLoopRunSpecific + 230
34 CoreFoundation 0x3443217f CFRunLoopRunInMode + 58
35 GraphicsServices 0x3026b5f3 GSEventRunModal + 114
36 GraphicsServices 0x3026b69f GSEventRun + 62
37 UIKit 0x31ad0123 -[UIApplication _run] + 402
38 UIKit 0x31ace12f UIApplicationMain + 670
39 App 0x0000285f main + 70
40 App 0x00002814 start + 40
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
In this case it is CABasicAnimation on which numberOfSectionsInTableView is being called but sometimes there are class names like NSMachPort which i have never heard of. Also, the method being called numberOfSectionsInTableView remains the same with the class names changing to always give a doesNotRecognizeSelector exception.
Also this problem only happens when i try to rotate the device. Whenever i get a stack trace like above, there are all system functions which makes it difficult to debug.
Really need some expert advice on this. Please read the forum mentioned above to be clear about the issue.
Start with enabling NSZombies. What it sounds like is you are over-releasing an object.