当我在景观ViewController上调用PopViewController时会发生崩溃。但是，当我在Portrait ViewController上调用PopViewController时，不会发生崩溃。
这只发生在iOS7上 - 以前工作正常......
[self.navigationController popViewControllerAnimated：TRUE];
我非常坚持这一点，所以任何帮助都会受到赞赏：）
这是我的Symbolocated崩溃日志：
异常类型：EXC_CRASH（SIGABRT）异常代码： 0x0000000000000000,0x0000000000000000由线程触发：0
Last Exception Backtrace：0 CoreFoundation
0x2d9b2f4e __exceptionPreprocess + 1261 libobjc.A.dylib 0x3801b6aa objc_exception_throw + 34
2 CoreFoundation 0x2d9b2e90 + [NSException 提升：格式：] + 100
3 UIKit 0x3020ee70 - [UIViewController _preferredInterfaceOrientationForPresentationInWindow：fromInterfaceOrientation：] + 496
4 UIKit 0x3020d6ae - [UIWindowController 过渡：fromViewController：toViewController：目标：didEndSelector：动画：] + 2054
5 UIKit 0x3023ff86 - [UIViewController _dismissViewControllerWithTransition：from：completion：] + 1390
6 UIKit 0x301ef1e0 - [UIViewController dismissViewControllerWithTransition：completion：] + 1024
7 UIKit 0x303ecae2 - [UINavigationController _popViewControllerAndUpdateInterfaceOrientationAnimated：] + 814 8 UIKit 0x301ef6de - [UINavigationController _popViewControllerWithTransition：allowPoppingLast：] + 290
9 MyApp 0x00087e5a 0x55000 + 208474
10 MyApp 0x00088c56 0x55000 + 212054
11 MyApp 0x000889aa 0x55000 + 211370
12 MyApp 0x000a13f6 0x55000 + 312310
13 UIKit 0x3023b540 - [UIWindowController transitionViewDidComplete：fromView：toView：removeFromView：] + 1908
14 UIKit 0x3023acf6 __101- [UIWindowController 过渡：fromViewController：toViewController：目标：didEndSelector：动画：] _ block_invoke293 + 166
15 UIKit 0x3023ac1e - [_ UIViewControllerTransitionContext completeTransition：] + 70
16 UIKit 0x3023ab08 - [UITransitionView notifyDidCompleteTransition：] + 284 17 UIKit
0x3023a610 - [UITransitionView _didCompleteTransition：] + 94018 UIKit 0x3015bc32 - [UIViewAnimationState sendDelegateAnimationDidStop：finished：] + 174
19 UIKit 0x3015bb4a - [UIViewAnimationState animationDidStop：已完成：] + 66
20 QuartzCore 0x2fdb3d04 CA :: Layer :: run_animation_callbacks（void *）+ 228
21 libdispatch.dylib 0x384fed62 _dispatch_client_callout + 18
22 libdispatch.dylib 0x385057bc _dispatch_main_queue_callback_4CF $ VARIANT $ mp + 264
23 CoreFoundation 0x2d97d81c CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 4
24 CoreFoundation 0x2d97c0f0 __CFRunLoopRun + 1296
25 CoreFoundation 0x2d8e6ce2 CFRunLoopRunSpecific + 518
26 CoreFoundation 0x2d8e6ac6 CFRunLoopRunInMode + 102
27 GraphicsServices 0x325b427e GSEventRunModal + 134
28 UIKit 0x30188a3c UIApplicationMain + 1132
29 MyApp 0x0005ca84 0x55000 + 31364
30 MyApp 0x0005ca0c 0x55000 + 31244
答案 0 :(得分：2)
原来，它在iOS7上崩溃的原因是由于前一个视图控制器上缺少一段代码告诉它将下一个上一页显示为肖像！
- （UIInterfaceOrientation）preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationPortrait;}
答案 1 :(得分：0)
也许你的视图控制器在旋转时已经被杀死，所以当你调用popViewControllerAnimated时它会崩溃。