我正在调试一个应用程序，它在执行某个导航功能时会抛出exec-bad-access错误，但只有当我在设备上运行它时才会抛出。
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0xf0000008
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x3421bf78 objc_msgSend + 16
1 UIKit 0x31d9a28c -[UIWebView webView:decidePolicyForNavigationAction:request:frame:decisionListener:] + 68
2 CoreFoundation 0x321ce7dc __invoking___ + 60
3 CoreFoundation 0x321297aa -[NSInvocation invoke] + 154
4 CoreFoundation 0x321293c8 -[NSInvocation invokeWithTarget:] + 44
5 WebKit 0x365f6e06 -[_WebSafeForwarder forwardInvocation:] + 246
6 CoreFoundation 0x321cda7c ___forwarding___ + 660
7 CoreFoundation 0x32128648 _CF_forwarding_prep_0 + 40
8 CoreFoundation 0x321ce7dc __invoking___ + 60
9 CoreFoundation 0x321297aa -[NSInvocation invoke] + 154
10 WebCore 0x358fa1ee _ZL11SendMessageP12NSInvocation + 18
11 WebCore 0x3590d6ea _ZL20HandleDelegateSourcePv + 74
12 CoreFoundation 0x3219facc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
13 CoreFoundation 0x3219f298 __CFRunLoopDoSources0 + 208
14 CoreFoundation 0x3219e03e __CFRunLoopRun + 646
15 CoreFoundation 0x3212149e CFRunLoopRunSpecific + 294
16 CoreFoundation 0x32121366 CFRunLoopRunInMode + 98
17 GraphicsServices 0x31278432 GSEventRunModal + 130
18 UIKit 0x31c20cce UIApplicationMain + 1074
19 Parliament 0x0007396a main (main.m:14)
20 Parliament 0x00073928 start + 32
这是错误日志。有谁知道为什么这是或如何我可以调试这样的错误，因为运行thruogh一个仪器没有肝脏
答案 0 :(得分：1)
您可能已经发布了一个对象，然后尝试在webView中访问该对象：decisionPolicyForNavigationAction委托方法。
在调试版本设置中启用“Zombie”检测： How do I set up NSZombieEnabled in Xcode 4?
这将帮助您识别对象是否未被正确保留。