任何iPhone大师请在这里告诉我我的应用程序崩溃的原因是我的日志

Question

我正在iPhone中使用四个选项卡进行选项卡应用程序。我的应用程序几乎完成了，但当应用程序运行时，它有时会崩溃。当我在导航中的前视图和后视图之间切换时，我发现了这个问题。有iPhone大师能帮我解决这个问题吗？

## Log ##  
   Mon Jul 16 21:07:55 unknown MyApp[167] <Warning>: NVVC Dealloc 
    Mon Jul 16 21:08:23 unknown com.apple.launchd[1] <Notice>: (UIKitApplication:com.company.MyApp[0xe271]) Bug: launchd_core_logic.c:2688 (24132):10 
    Mon Jul 16 21:08:23 unknown com.apple.launchd[1] <Notice>: (UIKitApplication:com.company.MyApp[0xe271]) Working around 5020256. Assuming the job crashed. 
    Mon Jul 16 21:08:23 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:com.company.MyApp[0xe271]) Job appears to have crashed: Segmentation 
    fault 
    Mon Jul 16 21:08:23 unknown SpringBoard[29] <Warning>: Application 'MyApp' exited abnormally with signal 11: Segmentation fault 
    Mon Jul 16 21:09:04 unknown lockdownd[20] <Error>: (0x403000) handle_connection: Could not receive USB message #7 from Xcode. Killing connection 
    Mon Jul 16 22:00:39 unknown com.apple.launchd[1] <Notice>: (UIKitApplication:com.apple.mobilemail[0x55fb]) Exited: Killed 
    Mon Jul 16 22:00:39 unknown com.apple.launchd[1] <Notice>: (UIKitApplication:com.apple.mobilephone[0xa13c]) Exited: Killed 
    Mon Jul 16 22:00:39 unknown com.apple.launchd[1] <Notice>: (UIKitApplication:com.MyApp.app[0x137]) Exited: Killed 
    Mon Jul 16 22:00:39 unknown com.apple.launchd[1] <Notice>: (com.apple.accessoryd) Exited: Killed 
    Mon Jul 16 22:00:41 unknown SpringBoard[29] <Warning>: Application 'Mail' exited abnormally with signal 9: Killed 
    Mon Jul 16 22:00:41 unknown SpringBoard[29] <Warning>: Memory level is not normal (15%). Delaying auto-relaunch of 'Mail' for 30 seconds. Mon Jul 16 22:00:41 unknown SpringBoard[29] <Warning>: Application 'app' exited abnormally with signal 9: Killed 
    Mon Jul 16 22:00:42 unknown SpringBoard[29] <Warning>: Application 'Phone' exited abnormally with signal 9: Killed 

Answer 1

这看起来很熟悉：

Application 'MyApp' exited abnormally with signal 11: Segmentation fault

Segmentation fault意味着你试图访问一个尚未分配的内存区域，或者通常你引用了一个无效的指针，我会仔细检查代码的相关部分。

由于你在切换视图，你可能会认为一些与内存相关的任务已经得到了处理，但事实上它们还没有得到处理。