我有一个UIPageViewController，它有两个屏幕。
self.pageController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
其中一个屏幕包含ipad上的iphone / Collection视图的tableview。在一些用户事件中，我们设置了contentOfset以稍微移动tableview
[table setContentOffset:cell.frame.origin animated:YES];
然后用户使用UIPageviewcontroller
导航到下一个屏幕以上用例会导致应用程序崩溃并显示以下日志
2014-11-14 09:04:46.783 tibbr[12329:79833] *** Assertion failure in -[_UIQueuingScrollView _setWrappedViewAtIndex:withView:], /SourceCache/UIKit_Sim/UIKit-3318.16.14/_UIQueuingScrollView.m:338
2014-11-14 09:04:46.786 tibbr[12329:79833] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Unexpected subviews'
*** First throw call stack:
(
0 CoreFoundation 0x0000000113512f35 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000111be7bb7 objc_exception_throw + 45
2 CoreFoundation 0x0000000113512d9a +[NSException raise:format:arguments:] + 106
3 Foundation 0x00000001115c15df -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
4 UIKit 0x00000001108715e0 -[_UIQueuingScrollView _setWrappedViewAtIndex:withView:] + 215
5 UIKit 0x0000000110871b0a -[_UIQueuingScrollView _replaceViews:updatingContents:adjustContentInsets:animated:] + 672
6 UIKit 0x0000000110873e57 -[_UIQueuingScrollView setView:direction:animated:completion:] + 524
7 UIKit 0x00000001107d5e16 -[UIPageViewController _setViewControllers:withScrollInDirection:animated:completion:] + 483
8 UIKit 0x00000001107d5f78 -[UIPageViewController setViewControllers:direction:animated:completion:] + 157
12 UIKit 0x000000011024e8be -[UIApplication sendAction:to:from:forEvent:] + 75
13 UIKit 0x0000000110355410 -[UIControl _sendActionsForEvents:withEvent:] + 467
14 UIKit 0x00000001103cf9ea -[UISegmentedControl _setSelectedSegmentIndex:notify:animate:] + 570
15 UIKit 0x00000001103d1a0f -[UISegmentedControl touchesEnded:withEvent:] + 143
16 UIKit 0x00000001105fb540 _UIGestureRecognizerUpdate + 9487
17 UIKit 0x0000000110293ff6 -[UIWindow _sendGesturesForEvent:] + 1041
18 UIKit 0x0000000110294c23 -[UIWindow sendEvent:] + 667
19 UIKit 0x00000001102619b1 -[UIApplication sendEvent:] + 246
20 UIKit 0x000000011026ea7d _UIApplicationHandleEventFromQueueEvent + 17370
21 UIKit 0x000000011024a103 _UIApplicationHandleEventQueue + 1961
22 CoreFoundation 0x0000000113448551 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
23 CoreFoundation 0x000000011343e41d __CFRunLoopDoSources0 + 269
24 CoreFoundation 0x000000011343da54 __CFRunLoopRun + 868
25 CoreFoundation 0x000000011343d486 CFRunLoopRunSpecific + 470
26 GraphicsServices 0x0000000113e859f0 GSEventRunModal + 161
27 UIKit 0x000000011024d420 UIApplicationMain + 1282
28 tibbr 0x000000010cb942d1 tibbr + 58065
29 libdyld.dylib 0x0000000112660145 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
请建议我这个问题的根本原因