什么导致了这个iPhone崩溃日志？

我有点卡住了，需要解决这个问题，因为我的一个应用程序显示随机崩溃，不能总是被复制。 这是崩溃日志之一：

Incident Identifier: 59865612-9F00-44EA-9474-2BF607AD662E CrashReporter Key: bea17b7f4237e78a13ce60449d694621d0f16a44 Hardware Model: iPhone2,1 Process: APPNAME [82] Path: /var/mobile/Applications/ACE9A1A2-F1BE-43E0-9775-1291723D4C4A/APPNAME.app/APPNAME Identifier: APPNAME Version: ??? (???) Code Type: ARM (Native) Parent Process: launchd [1] Date/Time: 2011-05-21 19:10:27.893 +0100 OS Version: iPhone OS 4.3.3 (8J2) Report Version: 104 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x00000009 Crashed Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libobjc.A.dylib 0x33b24c98 objc_msgSend + 16 1 Foundation 0x344507b4 __NSFireTimer + 112 2 CoreFoundation 0x3039ca40 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 8 3 CoreFoundation 0x3039eec4 __CFRunLoopDoTimer + 844 4 CoreFoundation 0x3039f83e __CFRunLoopRun + 1082 5 CoreFoundation 0x3032febc CFRunLoopRunSpecific + 224 6 CoreFoundation 0x3032fdc4 CFRunLoopRunInMode + 52 7 GraphicsServices 0x3448e418 0x3448a000 + 17432 8 GraphicsServices 0x3448e4c4 0x3448a000 + 17604 9 UIKit 0x33f3cd62 -[UIApplication _run] + 398 10 UIKit 0x33f3a800 UIApplicationMain + 664 11 APPNAME 0x00002d88 0x1000 + 7560 12 APPNAME 0x00002d3c 0x1000 + 7484 Thread 1 name: Dispatch queue: com.apple.libdispatch-manager Thread 1: 0 libsystem_kernel.dylib 0x36100fbc kevent + 24 1 libdispatch.dylib 0x33d0b032 _dispatch_mgr_invoke + 706 2 libdispatch.dylib 0x33d0c03a _dispatch_queue_invoke + 86 3 libdispatch.dylib 0x33d0b5ea _dispatch_worker_thread2 + 186 4 libsystem_c.dylib 0x33e0a58a _pthread_wqthread + 258 5 libsystem_c.dylib 0x33e0abbc start_wqthread + 0 Thread 2 name: WebThread Thread 2: 0 libsystem_kernel.dylib 0x360fdc00 mach_msg_trap + 20 1 libsystem_kernel.dylib 0x360fd758 mach_msg + 44 2 CoreFoundation 0x3039d2b8 __CFRunLoopServiceMachPort + 88 3 CoreFoundation 0x3039f562 __CFRunLoopRun + 350 4 CoreFoundation 0x3032febc CFRunLoopRunSpecific + 224 5 CoreFoundation 0x3032fdc4 CFRunLoopRunInMode + 52 6 WebCore 0x34c2627e RunWebThread(void*) + 382 7 libsystem_c.dylib 0x33e0930a _pthread_start + 242 8 libsystem_c.dylib 0x33e0abb4 thread_start + 0 Thread 3: 0 libsystem_kernel.dylib 0x360fdc00 mach_msg_trap + 20 1 libsystem_kernel.dylib 0x360fd758 mach_msg + 44 2 CoreFoundation 0x3039d2b8 __CFRunLoopServiceMachPort + 88 3 CoreFoundation 0x3039f562 __CFRunLoopRun + 350 4 CoreFoundation 0x3032febc CFRunLoopRunSpecific + 224 5 CoreFoundation 0x3032fdc4 CFRunLoopRunInMode + 52 6 Foundation 0x343ea7f6 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 206 7 Foundation 0x343dd382 -[NSThread main] + 38 8 Foundation 0x3444f5c6 __NSThread__main__ + 966 9 libsystem_c.dylib 0x33e0930a _pthread_start + 242 10 libsystem_c.dylib 0x33e0abb4 thread_start + 0 Thread 4 name: com.apple.CFSocket.private Thread 4: 0 libsystem_kernel.dylib 0x360ffc60 __select + 20 1 CoreFoundation 0x303a28f2 __CFSocketManager + 582 2 libsystem_c.dylib 0x33e0930a _pthread_start + 242 3 libsystem_c.dylib 0x33e0abb4 thread_start + 0 Thread 5: 0 libsystem_kernel.dylib 0x361003ec __workq_kernreturn + 8 1 libsystem_c.dylib 0x33e0a6d8 _pthread_wqthread + 592 2 libsystem_c.dylib 0x33e0abbc start_wqthread + 0 Thread 6: 0 libsystem_kernel.dylib 0x361003ec __workq_kernreturn + 8 1 libsystem_c.dylib 0x33e0a6d8 _pthread_wqthread + 592 2 libsystem_c.dylib 0x33e0abbc start_wqthread + 0 Thread 7: 0 libsystem_kernel.dylib 0x361003ec __workq_kernreturn + 8 1 libsystem_c.dylib 0x33e0a6d8 _pthread_wqthread + 592 2 libsystem_c.dylib 0x33e0abbc start_wqthread + 0 Thread 8: 0 libsystem_kernel.dylib 0x361003ec __workq_kernreturn + 8 1 libsystem_c.dylib 0x33e0a6d8 _pthread_wqthread + 592 2 libsystem_c.dylib 0x33e0abbc start_wqthread + 0 Thread 0 crashed with ARM Thread State: r0: 0x04246810 r1: 0x33738814 r2: 0x042b3704 r3: 0x00000000 r4: 0x00000001 r5: 0x00000001 r6: 0x00259330 r7: 0x2fdfeb30 r8: 0x002593d0 r9: 0x00000000 r10: 0x04241720 r11: 0x00000000 ip: 0x3fa3f4e8 sp: 0x2fdfea60 lr: 0x349077bb pc: 0x33dfcc98 cpsr: 0x280f0030 

有人可以提供一个build议，可能是什么原因？

谢谢！

Answer 1

它看起来像你有一个计时器发射，并试图发送一个消息已被释放的对象。

Answer 2

这里的Keyline是： Exception Type: EXC_BAD_ACCESS (SIGBUS)

当您尝试访问先前已发布的对象时，会发生这种情况。 因为你试图在一个定时器的callback函数中访问一个对象，可能发生的事情就是，当定时器响应一个对象时，这个对象就被释放了。

您可以通过启用NSZombie环境variables来跟踪对象。

Answer 3

当你创build一个NSTimer的时候，如果被调用的对象消失，那么保持这个ref是非常重要的，然后使它失效。 像这样：

 [self.bugZapTimer invalidate]; self.bugZapTimer = [NSTimer timerWithTimeInterval: 0.1 target: self selector: @selector(bugZapTimer:) userInfo: NULL repeats: FALSE]; [[NSRunLoop currentRunLoop] addTimer:self.bugZapTimer forMode: NSDefaultRunLoopMode]; 

然后，在你的dealloc方法中你必须这样做：

 [self.bugZapTimer invalidate]; self.bugZapTimer = nil;