my application keeps crashing because of the below error. I tried debugging it but am not able to understand why is it caused and how to debug and remove this..
Thread : Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x335cef46 objc_msgSend + 5
1 UIKit 0x29307c2b -[UIApplication sendAction:to:from:forEvent:] + 70
2 UIKit 0x29307bd1 -[UIControl sendAction:to:forEvent:] + 44
3 UIKit 0x292f2863 -[UIControl _sendActionsForEvents:withEvent:] + 582
4 UIKit 0x2930763d -[UIControl touchesEnded:withEvent:] + 588
5 UIKit 0x29307317 -[UIWindow _sendTouchesForEvent:] + 522
6 UIKit 0x29300be1 -[UIWindow sendEvent:] + 544
7 UIKit 0x292d73dd -[UIApplication sendEvent:] + 196
8 UIKit 0x2954ac29 _UIApplicationHandleEventFromQueueEvent + 13888
9 UIKit 0x292d5e39 _UIApplicationHandleEventQueue + 1296
10 CoreFoundation 0x25dde377 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 14
11 CoreFoundation 0x25ddd787 __CFRunLoopDoSources0 + 218
12 CoreFoundation 0x25ddbded __CFRunLoopRun + 772
13 CoreFoundation 0x25d2a211 CFRunLoopRunSpecific + 476
14 CoreFoundation 0x25d2a023 CFRunLoopRunInMode + 106
15 GraphicsServices 0x2d1230a9 GSEventRunModal + 136
16 UIKit 0x293361d1 UIApplicationMain + 1440
17 Application 0x000ffefb main (main.m:17)
Related
I have a crash that is occurring on iOS7 only. it is random reproduce, The problem is there is no user code in the stack trace so it is proving difficult to track down，Please help me guys.
Thank you
Crash Log：
Exception Type: SIGSEGV
Exception Codes: SEGV_ACCERR at 0x6001c121
Crashed Thread: 0
Thread 0 Crashed:
0 libobjc.A.dylib 0x39c36636 objc_msgSend + 15
1 UIKit 0x318b2fd6 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 30
2 UIKit 0x318b2fb0 -[UIControl sendAction:to:forEvent:] + 44
3 UIKit 0x3189e716 -[UIControl _sendActionsForEvents:withEvent:] + 374
4 UIKit 0x318b2a2e -[UIControl touchesEnded:withEvent:] + 590
5 UIKit 0x318b2700 -[UIWindow _sendTouchesForEvent:] + 528
6 UIKit 0x318ad6ca -[UIWindow sendEvent:] + 758
7 UIKit 0x318828cc -[UIApplication sendEvent:] + 196
8 UIKit 0x31880f76 __UIApplicationHandleEventQueue + 7102
9 CoreFoundation 0x2f02c20a ___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 14
+ 14
10 CoreFoundation 0x2f02b6da ___CFRunLoopDoSources0 + 206
11 CoreFoundation 0x2f029ece ___CFRunLoopRun + 622
12 CoreFoundation 0x2ef94ebe CFRunLoopRunSpecific + 515
13 CoreFoundation 0x2ef94ca2 CFRunLoopRunInMode + 103
14 GraphicsServices 0x33ebb662 GSEventRunModal + 135
15 UIKit 0x318e114c UIApplicationMain + 1131
16 IPadTest 0x00957eca main (main.m:19)
17 libdyld.dylib 0x3a139ab6 _start + 2
Im trying to find crash from following code / snippet.
Thread : Crashed: com.apple.main-thread
0 libobjc.A.dylib 6771342288 objc_msgSend + 16
1 Foundation 6488040888 vars_index_with_insert + 396
2 Foundation 6488046624 -[NSISLinearExpression setCoefficient:forVariable:] + 372
3 Foundation 6488038164 -[NSLayoutConstraint _lowerIntoExpression:reportingConstantIsRounded:] + 432
4 Foundation 6488033112 -[NSLayoutConstraint _tryToChangeContainerGeometryWithUndoHandler:] + 136
5 Foundation 6488032176 -[NSLayoutConstraint _setSymbolicConstant:constant:] + 420
6 UIKit 6558145124 -[UIWindow(AdditionalLayoutSupport) _windowInternalConstraints_sizeDidChange] + 220
7 UIKit 6553937808 -[UIWindow _setFrame:sendTraitNotifications:] + 436
8 UIKit 6553925712 __78-[UIWindow _rotateWindowToOrientation:updateStatusBar:duration:skipCallbacks:]_block_invoke1072 + 264
9 UIKit 6556461676 __58-[_UIWindowRotationAnimationController animateTransition:]_block_invoke + 56
10 UIKit 6551262980 +[UIView(UIViewAnimationWithBlocks) _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 508
11 UIKit 6551360196 +[UIView(UIViewAnimationWithBlocks) animateWithDuration:delay:options:animations:completion:] + 68
12 UIKit 6556461540 -[_UIWindowRotationAnimationController animateTransition:] + 388
13 UIKit 6553920912 -[UIWindow _rotateToBounds:withAnimator:transitionContext:] + 800
14 UIKit 6553924620 -[UIWindow _rotateWindowToOrientation:updateStatusBar:duration:skipCallbacks:] + 1260
15 UIKit 6553926412 -[UIWindow _setRotatableClient:toOrientation:applyTransformToWindow:updateStatusBar:duration:force:isRotating:] + 360
16 UIKit 6551563312 -[UIWindow _setRotatableViewOrientation:updateStatusBar:duration:force:] + 144
17 UIKit 6551529112 __57-[UIWindow _updateToInterfaceOrientation:duration:force:]_block_invoke + 128
18 UIKit 6551053184 -[UIWindow _updateToInterfaceOrientation:duration:force:] + 400
19 UIKit 6551051872 -[UIWindow _updateInterfaceOrientationFromDeviceOrientation:] + 332
20 CoreFoundation 6472590020 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
21 CoreFoundation 6471791696 _CFXNotificationPost + 2060
22 Foundation 6487714432 -[NSNotificationCenter postNotificationName:object:userInfo:] + 72
23 UIKit 6551051060 -[UIDevice setOrientation:animated:] + 360
24 UIKit 6551050224 -[UIApplication handleEvent:withNewEvent:] + 1632
25 UIKit 6551048320 -[UIApplication sendEvent:] + 104
26 UIKit 6551491268 _UIApplicationHandleEvent + 700
27 GraphicsServices 6633656724 _PurpleEventCallback + 712
28 GraphicsServices 6633655428 PurpleEventCallback + 44
29 CoreFoundation 6472661588 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56
30 CoreFoundation 6472661428 __CFRunLoopDoSource1 + 436
31 CoreFoundation 6472653108 __CFRunLoopRun + 1640
32 CoreFoundation 6471783124 CFRunLoopRunSpecific + 396
33 GraphicsServices 6633649916 GSEventRunModal + 168
34 UIKit 6551465792 UIApplicationMain + 1488
35 project_name 4298267384 main + 108 (main.m:18)
36 libdyld.dylib 6778251784 start + 4
go to "Breakpoint navigator" and click on "+" button on bottom-left and select "Add Exception Breakpoint...".
This kind of breakpoint capture all exception, so you can navigate on stack error on left side and figure out what happened.
Could you help me with this mysterious crash? It happens when I re-open the app after a few days, so it's practically impossible to debug it :/
Any clue or idea would be super helpful. I'm kinda lost here. Thank you!
Thread : Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x0000000196a63bd0 objc_msgSend + 16
1 UIKit 0x000000018ab35418 -[UIApplication sendAction:to:from:forEvent:] + 96
2 UIKit 0x000000018ab1e52c -[UIControl _sendActionsForEvents:withEvent:] + 612
3 UIKit 0x000000018ab34db4 -[UIControl touchesEnded:withEvent:] + 592
4 UIKit 0x000000018ab34a40 -[UIWindow _sendTouchesForEvent:] + 700
5 UIKit 0x000000018ab2df94 -[UIWindow sendEvent:] + 684
6 UIKit 0x000000018ab0168c -[UIApplication sendEvent:] + 264
7 UIKit 0x000000018ada060c _UIApplicationHandleEventFromQueueEvent + 14992
8 UIKit 0x000000018aaffbf4 _UIApplicationHandleEventQueue + 1616
9 CoreFoundation 0x000000018630a9ec __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
10 CoreFoundation 0x0000000186309c90 __CFRunLoopDoSources0 + 264
11 CoreFoundation 0x0000000186307d40 __CFRunLoopRun + 712
12 CoreFoundation 0x00000001862350a4 CFRunLoopRunSpecific + 396
13 GraphicsServices 0x000000018f3d75a4 GSEventRunModal + 168
14 UIKit 0x000000018ab66aa4 UIApplicationMain + 1488
15 Wiretap 0x000000010012b604 main (main.m:16)
16 libdyld.dylib 0x00000001970bea08 start + 4
I have this app in the app store, which according to Crashalitics, its %92-%95 stable. I made a similar app for Android and its around 98% stable. I am trying to get the stability up - but I don't see how. All the bugs I am seeing in the IOS version are not touching my code.
I see random bugs, that are not reproducible, and when they do are very random. Each happens 1-10 times, but I have a list of ... ~30 different items.
The app is pretty simple - a mostly linear storyboard (a few jumps, but no loops). The only project I am using which is not Apple's code is InAppSettingsKit, and most of the app is just maps which shows some items. The project is using ARC and currently compiled using XCode6 (but XCode5 showed the same symptoms).
How can I find these crashes? Is this in an inherent problem of IOS7-8? I do see some apps just closing up when I use the IPhone, and friends to tell me that IOS is not that stable, but ... I just think I am doing something wrong.
IOS8 70% IOS7 30%
Thread : Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x36444f66 objc_msgSend + 5
1 UIKit 0x2c160b35 -[UIScrollView(UIScrollViewInternal) _delegateScrollViewAnimationEnded] + 52
2 UIKit 0x2c160ac1 -[UIScrollView(UIScrollViewInternal) _scrollViewAnimationEnded:finished:] + 184
3 UIKit 0x2c20a5e5 -[UIAnimator stopAnimation:] + 476
4 UIKit 0x2c209fb9 -[UIAnimator(Static) _advanceAnimationsOfType:withTimestamp:] + 304
5 UIKit 0x2c209e85 -[UIAnimator(Static) _LCDHeartbeatCallback:] + 52
6 QuartzCore 0x2bae4aeb CA::Display::DisplayLinkItem::dispatch() + 98
7 QuartzCore 0x2bae4953 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 366
8 IOMobileFramebuffer 0x303c482f IOMobileFramebufferVsyncNotifyFunc + 90
9 IOKit 0x29af01ed IODispatchCalloutFromCFMessage + 256
10 CoreFoundation 0x28b7c3a5 __CFMachPortPerform + 132
11 CoreFoundation 0x28b8c7f3 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
12 CoreFoundation 0x28b8c78f __CFRunLoopDoSource1 + 346
13 CoreFoundation 0x28b8adb1 __CFRunLoopRun + 1608
14 CoreFoundation 0x28ad7b31 CFRunLoopRunSpecific + 476
15 CoreFoundation 0x28ad7943 CFRunLoopRunInMode + 106
16 GraphicsServices 0x2feb7051 GSEventRunModal + 136
17 UIKit 0x2c0cd6f1 UIApplicationMain + 1440
18 --------------- 0x000c8833 main (main.m:16)
IOS7 - 8 times
Thread : Fatal Exception: NSInvalidArgumentException
0 CoreFoundation 0x2e23ef83 __exceptionPreprocess + 130
1 libobjc.A.dylib 0x389efccf objc_exception_throw + 38
2 CoreFoundation 0x2e242917 -[NSObject(NSObject) doesNotRecognizeSelector:] + 202
3 CoreFoundation 0x2e241203 ___forwarding___ + 706
4 CoreFoundation 0x2e190768 _CF_forwarding_prep_0 + 24
5 VectorKit 0x35ec6911 -[VKMapCanvas initShouldRasterize:contentScale:inBackground:] + 476
6 VectorKit 0x35ec620f -[VKMapView initWithGlobe:shouldRasterize:inBackground:] + 230
7 MapKit 0x2f3d980b -[MKBasicMapView initWithFrame:andGlobe:shouldRasterize:] + 322
8 MapKit 0x2f40cd77 -[MKMapView _commonInitAndEnableLoading:fromIB:gestureRecognizerHostView:showsAttribution:] + 878
9 MapKit 0x2f40d86b -[MKMapView initWithCoder:] + 134
10 UIKit 0x30e70169 UINibDecoderDecodeObjectForValue + 740
11 UIKit 0x30e6fe7f -[UINibDecoder decodeObjectForKey:] + 90
12 UIKit 0x30dcb5ff -[UIRuntimeConnection initWithCoder:] + 150
13 UIKit 0x30e70169 UINibDecoderDecodeObjectForValue + 740
14 UIKit 0x30e70109 UINibDecoderDecodeObjectForValue + 644
15 UIKit 0x30e6fe7f -[UINibDecoder decodeObjectForKey:] + 90
16 UIKit 0x30dcadd1 -[UINib instantiateWithOwner:options:] + 888
17 UIKit 0x30d2360b -[UIViewController _loadViewFromNibNamed:bundle:] + 234
18 UIKit 0x30b7fbcd -[UIViewController loadView] + 92
19 UIKit 0x30a602ed -[UIViewController loadViewIfRequired] + 72
20 UIKit 0x30a60269 -[UIViewController view] + 24
21 UIKit 0x30b0a14b -[UINavigationController _startTransition:fromViewController:toViewController:] + 198
22 UIKit 0x30b09dfd -[UINavigationController _startDeferredTransitionIfNeeded:] + 572
23 UIKit 0x30b09b6d -[UINavigationController __viewWillLayoutSubviews] + 44
24 UIKit 0x30b09b05 -[UILayoutContainerView layoutSubviews] + 184
25 UIKit 0x30a5bd59 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 380
26 QuartzCore 0x306d962b -[CALayer layoutSublayers] + 142
27 QuartzCore 0x306d4e3b CA::Layer::layout_if_needed(CA::Transaction*) + 350
28 QuartzCore 0x30703cdd -[CALayer layoutIfNeeded] + 140
29 UIKit 0x30ad8163 -[UIViewController window:setupWithInterfaceOrientation:] + 242
30 UIKit 0x30ad6783 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:isRotating:] + 3498
31 UIKit 0x30ad59d3 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:] + 46
32 UIKit 0x30ad595b -[UIWindow _setRotatableViewOrientation:updateStatusBar:duration:force:] + 94
33 UIKit 0x30ad58f3 -[UIWindow _setRotatableViewOrientation:duration:force:] + 42
34 UIKit 0x30acdf69 __57-[UIWindow _updateToInterfaceOrientation:duration:force:]_block_invoke + 108
35 UIKit 0x30a62107 -[UIWindow _updateToInterfaceOrientation:duration:force:] + 382
36 UIKit 0x30ad5641 -[UIWindow setAutorotates:forceUpdateInterfaceOrientation:] + 696
37 UIKit 0x30ad5105 -[UIViewController _tryBecomeRootViewControllerInWindow:] + 164
38 UIKit 0x30a67045 -[UIWindow addRootViewControllerViewIfPossible] + 460
39 UIKit 0x30a64827 -[UIWindow _setHidden:forced:] + 302
40 UIKit 0x30ace33d -[UIWindow makeKeyAndVisible] + 60
41 UIKit 0x30acafad -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1820
42 UIKit 0x30ac556b -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 714
43 UIKit 0x30a616e9 -[UIApplication handleEvent:withNewEvent:] + 3540
44 UIKit 0x30a60851 -[UIApplication sendEvent:] + 72
45 UIKit 0x30ac4ca9 _UIApplicationHandleEvent + 616
46 GraphicsServices 0x33079aed _PurpleEventCallback + 608
47 GraphicsServices 0x330796d7 PurpleEventCallback + 34
48 CoreFoundation 0x2e209a67 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
49 CoreFoundation 0x2e209a03 __CFRunLoopDoSource1 + 346
50 CoreFoundation 0x2e2081d7 __CFRunLoopRun + 1398
51 CoreFoundation 0x2e172ebf CFRunLoopRunSpecific + 522
52 CoreFoundation 0x2e172ca3 CFRunLoopRunInMode + 106
53 UIKit 0x30ac3ed1 -[UIApplication _run] + 760
54 UIKit 0x30abf14d UIApplicationMain + 1136
55 --------------- 0x000ef833 main (main.m:16)
56 libdyld.dylib 0x38efcab7 start + 2
Another (IOS 6.1.6)
vThread : Fatal Exception: NSGenericException
0 CoreFoundation 0x31eaf2a3 __exceptionPreprocess + 162
1 libobjc.A.dylib 0x39b0b97f objc_exception_throw + 30
2 UIKit 0x3404d30f -[UIStoryboardPushSegue perform] + 1118
3 UIKit 0x33da20c5 -[UIApplication sendAction:to:from:forEvent:] + 72
4 UIKit 0x33da214d -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 120
5 UIKit 0x33da20c5 -[UIApplication sendAction:to:from:forEvent:] + 72
6 UIKit 0x33da2077 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 30
7 UIKit 0x33da2055 -[UIControl sendAction:to:forEvent:] + 44
8 UIKit 0x33da190b -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 502
9 UIKit 0x33da1e01 -[UIControl touchesEnded:withEvent:] + 488
10 UIKit 0x33cca5f1 -[UIWindow _sendTouchesForEvent:] + 524
11 UIKit 0x33cb7801 -[UIApplication sendEvent:] + 380
12 UIKit 0x33cb711b _UIApplicationHandleEvent + 6154
13 GraphicsServices 0x359735a3 _PurpleEventCallback + 590
14 GraphicsServices 0x359731d3 PurpleEventCallback + 34
15 CoreFoundation 0x31e84173 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
16 CoreFoundation 0x31e84117 __CFRunLoopDoSource1 + 138
17 CoreFoundation 0x31e82f99 __CFRunLoopRun + 1384
18 CoreFoundation 0x31df5ebd CFRunLoopRunSpecific + 356
19 CoreFoundation 0x31df5d49 CFRunLoopRunInMode + 104
20 GraphicsServices 0x359722eb GSEventRunModal + 74
21 UIKit 0x33d0b301 UIApplicationMain + 1120
22 --------------- 0x00116833 main (main.m:16)
23 libdyld.dylib 0x39f42b20 start
This app was released sevearl months ago and worked perfectly in iOS 4/5. Now getting crashes in some screens in iOS 6.
Fairly easy implementation. Have an AdBannerView in a xib. I wired it to the delagate. Have my delagate methods showing/hiding the ads. Here's the crash data.
Exception Type: EXC_CRASH (SIGABRT)
Last Exception Backtrace:
0 CoreFoundation 0x36d9b29e __exceptionPreprocess + 158
1 libobjc.A.dylib 0x350ab97a objc_exception_throw + 26
2 CoreFoundation 0x36cec55a -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 130
3 CoreFoundation 0x36d230ce +[NSDictionary dictionaryWithObjects:forKeys:count:] + 46
4 iAd 0x3594c23e -[ADBannerView setDelegate:] + 126
5 Foundation 0x347b49cc -[NSObject(NSKeyValueCoding) setValue:forKey:] + 208
6 UIKit 0x382101dc -[UIView(CALayerDelegate) setValue:forKey:] + 156
7 Foundation 0x347b071e -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 294
8 CoreFoundation 0x36d21616 -[NSArray makeObjectsPerformSelector:] + 174
9 UIKit 0x38209240 -[UINib instantiateWithOwner:options:] + 1036
10 UIKit 0x38208abe -[UIViewController _loadViewFromNibNamed:bundle:] + 230
11 UIKit 0x38101020 -[UIViewController loadView] + 88
12 UIKit 0x3808b468 -[UIViewController loadViewIfRequired] + 64
13 UIKit 0x380e0136 -[UIViewController contentScrollView] + 22
14 UIKit 0x380e007c -[UINavigationController _computeAndApplyScrollContentInsetDeltaForViewController:] + 24
15 UIKit 0x380dff60 -[UINavigationController _layoutViewController:] + 28
16 UIKit 0x380dfe84 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 268
17 UIKit 0x380df5c4 -[UINavigationController _startTransition:fromViewController:toViewController:] + 60
18 UIKit 0x380df4ac -[UINavigationController _startDeferredTransitionIfNeeded:] + 320
19 UIKit 0x380cdb8e -[UINavigationController pushViewController:transition:forceImmediate:] + 854
20 UIKit 0x380cd82e -[UINavigationController pushViewController:animated:] + 34
21 Hurricane 0x00002d9a -[TrackerViewController buttonPressed:] (TrackerViewController.m:111)
22 UIKit 0x381570a8 -[UIApplication sendAction:to:from:forEvent:] + 68
23 UIKit 0x3815705a -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 26
24 UIKit 0x38157038 -[UIControl sendAction:to:forEvent:] + 40
25 UIKit 0x381568ee -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 498
26 UIKit 0x38156de4 -[UIControl touchesEnded:withEvent:] + 484
27 UIKit 0x3807f5f4 -[UIWindow _sendTouchesForEvent:] + 520
28 UIKit 0x3806c804 -[UIApplication sendEvent:] + 376
29 UIKit 0x3806c11e _UIApplicationHandleEvent + 6150
30 GraphicsServices 0x3721f59e _PurpleEventCallback + 586
31 GraphicsServices 0x3721f1ce PurpleEventCallback + 30
32 CoreFoundation 0x36d7016e __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 30
33 CoreFoundation 0x36d70112 __CFRunLoopDoSource1 + 134
34 CoreFoundation 0x36d6ef94 __CFRunLoopRun + 1380
35 CoreFoundation 0x36ce1eb8 CFRunLoopRunSpecific + 352
36 CoreFoundation 0x36ce1d44 CFRunLoopRunInMode + 100
37 GraphicsServices 0x3721e2e6 GSEventRunModal + 70
38 UIKit 0x380c02fc UIApplicationMain + 1116
39 Hurricane 0x00002082 main (main.m:14)
40 Hurricane 0x0000203c start + 36
If I unwire the AdBannerView it works. Rewire and crash. I don't have any dictioniaries in this particular controller. In fact, it only has 6 buttons leading to other screens. The real strange thing is that the code is used elsewhere in other screens which work fine. Obviously, it worked fine before.
Let me clear you, In iOS 6, there are some properties and methods deprecated for AdBannerView . i think this should be the reason of your crash.
Please check this
http://developer.apple.com/library/ios/DOCUMENTATION/UserExperience/Reference/ADBannerView_Ref/Reference/Reference.html#//apple_ref/doc/uid/TP40009562-CH1-DontLinkElementID_9