iOS App crashes on bannerViewDidLoadAd

[themoonisdown09]

I have an iPhone app that seems to be crashing in the bannerViewDidLoadAd: method. It crashes on this line in the method:

banner.frame = CGRectOffset(banner.frame, 0, self.view.bounds.origin.y - 50);

Here is the thread in the crash report:

Date/Time: 2011-01-31 13:12:04.626 -0500
OS Version: iPhone OS 4.2.1 (8C148a)
Report Version: 104

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread: 0


Thread 0 Crashed:
0 libSystem.B.dylib 0x311de2d4 __kill + 8
1 libSystem.B.dylib 0x311de2c4 kill + 4
2 libSystem.B.dylib 0x311de2b6 raise + 10
3 libSystem.B.dylib 0x311f2d72 abort + 50
4 libstdc++.6.dylib 0x301dea20 __gnu_cxx::__verbose_terminate_handler() + 376
5 libobjc.A.dylib 0x319a2594 _objc_terminate + 104
6 libstdc++.6.dylib 0x301dcdf2 __cxxabiv1::__terminate(void (*)()) + 46
7 libstdc++.6.dylib 0x301dce46 std::terminate() + 10
8 libstdc++.6.dylib 0x301dcf16 __cxa_throw + 78
9 libobjc.A.dylib 0x319a14c4 objc_exception_throw + 64
10 CoreFoundation 0x314d212c -[NSObject(NSObject) doesNotRecognizeSelector:] + 96
11 CoreFoundation 0x31479aa2 ___forwarding___ + 502
12 CoreFoundation 0x314d1a50 __forwarding_prep_1___ + 48
13 MyAppName 0x00004518 -[ReminderListTableViewController bannerViewDidLoadAd:] (ReminderListTableViewController.m:631)
14 iAd 0x30cc82f8 -[ADBannerView sessionBannerViewDidLoad:] + 52
15 iAd 0x30ccc3e0 -[ADSession bannerViewDidLoadAdMessage:userInfo:] + 140
16 CoreFoundation 0x3147bcfc __invoking___ + 60
17 CoreFoundation 0x3147bbce -[NSInvocation invoke] + 102
18 iAd 0x30cd0bda -[ADMessageProxy forwardInvocation:] + 74
19 CoreFoundation 0x31479ae6 ___forwarding___ + 570
20 CoreFoundation 0x31479858 _CF_forwarding_prep_0 + 40
21 iAd 0x30cd01d2 -[ADDistributedMessagingCenter messagePort:receivedMessage:withData:] + 130
22 iAd 0x30cd068a ADMessagePortCallBack + 34
23 CoreFoundation 0x314913fe __CFMessagePortPerform + 242
24 CoreFoundation 0x314656f8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 20
25 CoreFoundation 0x314656bc __CFRunLoopDoSource1 + 160
26 CoreFoundation 0x31457f76 __CFRunLoopRun + 514
27 CoreFoundation 0x31457c80 CFRunLoopRunSpecific + 224
28 CoreFoundation 0x31457b88 CFRunLoopRunInMode + 52
29 GraphicsServices 0x35d664a4 GSEventRunModal + 108
30 GraphicsServices 0x35d66550 GSEventRun + 56
31 UIKit 0x338d5322 -[UIApplication _run] + 406
32 UIKit 0x338d2e8c UIApplicationMain + 664
33 MyAppName 0x000025c2 main (main.m:14)
34 MyAppName 0x0000258c start + 32

Now, before you tell me to release the iAd's delegate, I already am. In my dealloc method, I am doing this:

adBanner.delegate = nil;
[adBanner release];

This very frustrating because it looks like I am doing everything right. I was not having this error until a couple months after I released it with iAds. I would really appreciate the help.


Edit: If it helps, I used Interface Builder to add the iAd. I've checked the code file to see if there was anywhere that I am releasing the adBanner, but there is not (except in the dealloc method).

 

[dejo]

Have you tried invoking the debugger to investigate what the actual values of your variables are for this line?

 

[themoonisdown09]

Have you tried invoking the debugger to investigate what the actual values of your variables are for this line?

That's the problem, I can't recreate this crash when debugging on my device or in the simulator. I actually tested this app for a month on my device before I released it. Now, with real ads being pushed, it seems to crash.

My only guess is that the adBanner is nil. I'm not sure how it could be though.

 

[dejo]

Is there a difference between banner and adBanner?

 

[themoonisdown09]

Is there a difference between banner and adBanner?

banner is the parameter in the bannerViewDidLoadAd: method.

adBanner is the private variable which also has a property self.adBanner. The property is being retained.

 

[dejo]

Well, since the line your error is occurring on makes no mention of adBanner, I don't think you need to suspect it.

But since you can't recreate the crash, I'm not sure what I can say at this point. That really sucks and I hope that you are able to figure something out.