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Question

I am developing an application to take photos and upload the photos to remote server.

I have customized camera view using overlay view. App allows to take more than 1 photos per time and photos will be saved to device just after taking photos. When I am taking photos app gives memory warning and then crash. Followings are the from crash report.
I have talked with Apple support team and they said this is not due to memory issue. This is because of trying to send an action to one of your controller object that no longer exists.

OS Version: iPhone OS 4.3.3 (8J2) Report Version: 104

Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x73980000 Crashed Thread: 0

Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libobjc.A.dylib

0x34499c9a objc_msgSend + 18 1

UIKit

0x30a8bc1a -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 86 2 CoreFoundation

0x308f056a -[NSObject(NSObject) performSelector:withObject:withObject:] + 18 3 UIKit 0x309feec2 -[UIApplication sendAction:to:from:forEvent:] + 78 4

UIKit

0x309fee62 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 26 5 UIKit 0x309fee34 -[UIControl sendAction:to:forEvent:] + 32 6

UIKit

0x309feb86 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 350 7 UIKit

0x309ff41c -[UIControl touchesEnded:withEvent:] + 336 8

UIKit

0x309e452e _UIGestureRecognizerSortAndSendDelayedTouches + 2194 9 UIKit 0x309e3bfa _UIGestureRecognizerUpdateObserver + 690 10 CoreFoundation

0x30957a2e CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 10 11 CoreFoundation 0x3095945e
__CFRunLoopDoObservers + 406 12 CoreFoundation

0x3095a754 __CFRunLoopRun + 848 13 CoreFoundation

0x308eaebc CFRunLoopRunSpecific + 224 14 CoreFoundation

0x308eadc4 CFRunLoopRunInMode + 52 15 GraphicsServices

0x30269418 GSEventRunModal + 108 16 GraphicsServices

0x302694c4 GSEventRun + 56 17 UIKit 0x30a10d62 -[UIApplication _run] + 398 18 UIKit

0x30a0e800 UIApplicationMain + 664 19 hand-e-pix

0x000025a4 main (main.m:14) 20 hand-e-pix

0x0000254c start + 32

Can anyone please help me to identify what cause this problem?

Many Thanks

Regards Chin

How did you set up the overlay view? Can you put some code here?
This is a good example given by apple.Hope this will help you.developer.apple.com/library/ios/#samplecode/PhotoPicker/…

Claus Broch · Accepted Answer · 2011-05-30 12:32:11Z

This could easily be related to a retain/release issue. Make sure you balance your reetain/release calls. Also make sure you do not reference any deallocated objects in your code.

You might want to take a look at enabling NSZombieEnabled in order to track this one down. You can find information about how to enable it here.

Thank you very much Claus, I was straggling to find a proper answer for a long
time. I have found the problem with use of NSZombieEnabled. That is very use full variable. I have deallocated the autorelease variable. Thanks again.
@Chinthaka You're welcome. Just a little advice since I can see you're new on SO.
Always remember to accept an answer if it solves your problem

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iPhone app crash with unknown error

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