任何人都可以帮我理解崩溃报告吗？自iOS App 8个月开发以来，这是我第一次不得不处理这个问题。
我知道这与解雇导致它的视图控制器有关，但我没有对此代码进行任何更改，但突然间它开始引起问题。关于从哪里开始的任何指导都是惊人的。
Date/Time: 2013-03-10 14:56:06.091 +0000
OS Version: iOS 6.1.2 (10B146)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x3afee5b6 objc_msgSend + 22
1 AVFoundation 0x3247f752 -[AVAudioPlayer(AVAudioPlayerPriv) finishedPlaying:] + 74
2 Foundation 0x33c700f0 __NSThreadPerformPerform + 456
3 CoreFoundation 0x3332e680 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 12
4 CoreFoundation 0x3332dee4 __CFRunLoopDoSources0 + 208
5 CoreFoundation 0x3332ccb2 __CFRunLoopRun + 642
6 CoreFoundation 0x3329feb8 CFRunLoopRunSpecific + 352
7 CoreFoundation 0x3329fd44 CFRunLoopRunInMode + 100
8 GraphicsServices 0x36e612e6 GSEventRunModal + 70
9 UIKit 0x351b52fc UIApplicationMain + 1116
10 iWhovian 0x000391fe main (main.m:15)
11 iWhovian 0x0002f56c start + 36
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x3b4e1648 kevent64 + 24
1 libdispatch.dylib 0x3b41a4ec _dispatch_mgr_invoke + 792
2 libdispatch.dylib 0x3b40cdf4 _dispatch_mgr_thread$VARIANT$up + 32
Thread 2 name: WebThread
Thread 2:
0 libsystem_kernel.dylib 0x3b4e0eb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3b4e1048 mach_msg + 36
2 CoreFoundation 0x3332e040 __CFRunLoopServiceMachPort + 124
3 CoreFoundation 0x3332cd9e __CFRunLoopRun + 878
4 CoreFoundation 0x3329feb8 CFRunLoopRunSpecific + 352
5 CoreFoundation 0x3329fd44 CFRunLoopRunInMode + 100
6 WebCore 0x39294500 RunWebThread(void*) + 440
7 libsystem_c.dylib 0x3b44a30e _pthread_start + 306
8 libsystem_c.dylib 0x3b44a1d4 thread_start + 4
Thread 3:
0 libsystem_kernel.dylib 0x3b4f108c __psynch_cvwait + 24
1 libsystem_c.dylib 0x3b442d2a _pthread_cond_wait + 642
2 libsystem_c.dylib 0x3b44cf14 pthread_cond_wait + 36
3 Foundation 0x33bec4d2 -[NSCondition wait] + 190
4 iWhovian 0x0006ef90 -[PFCommandCache runLoop] (PFCommandCache.m:491)
5 Foundation 0x33c6fe80 __NSThread__main__ + 968
6 libsystem_c.dylib 0x3b44a30e _pthread_start + 306
7 libsystem_c.dylib 0x3b44a1d4 thread_start + 4
Thread 4 name: AQClient
Thread 4:
0 libsystem_kernel.dylib 0x3b4e0eb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3b4e1048 mach_msg + 36
2 CoreFoundation 0x3332e040 __CFRunLoopServiceMachPort + 124
3 CoreFoundation 0x3332cd9e __CFRunLoopRun + 878
4 CoreFoundation 0x3329feb8 CFRunLoopRunSpecific + 352
5 CoreFoundation 0x3329fd44 CFRunLoopRunInMode + 100
6 AudioToolbox 0x32d816fe GenericRunLoopThread::Entry(void*) + 134
7 AudioToolbox 0x32d62882 CAPThread::Entry(CAPThread*) + 294
8 libsystem_c.dylib 0x3b44a30e _pthread_start + 306
9 libsystem_c.dylib 0x3b44a1d4 thread_start + 4
Thread 5:
0 libsystem_kernel.dylib 0x3b4f1d98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x3b43fcf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x3b43fa12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x3b43f8a0 start_wqthread + 4
Thread 6 name: Dispatch queue: com.apple.NSXPCConnection.m-user.com.apple.gamed
Thread 6:
0 libobjc.A.dylib 0x3afee5b0 objc_msgSend + 16
1 CoreFoundation 0x332b0fdc -[__NSSetI member:] + 140
2 CoreFoundation 0x332b0f44 -[NSSet containsObject:] + 28
3 Foundation 0x33c08978 -[NSCoder _validateAllowedClass:forKey:allowingInvocations:] + 124
4 Foundation 0x33c08402 _decodeObjectStuff + 282
5 Foundation 0x33c08200 -[NSXPCDecoder decodeObjectOfClasses:forKey:] + 76
6 GameKit 0x33e2f8fa -[GKInternalRepresentation initWithCoder:] + 238
7 Foundation 0x33c086f2 _decodeObjectStuff + 1034
8 Foundation 0x33d1fda8 -[NSXPCDecoder _decodeArrayOfObjectsForKey:] + 532
9 Foundation 0x33bf4ebc -[NSArray(NSArray) initWithCoder:] + 784
10 Foundation 0x33c086f2 _decodeObjectStuff + 1034
11 Foundation 0x33c08200 -[NSXPCDecoder decodeObjectOfClasses:forKey:] + 76
12 GameKit 0x33e2f8fa -[GKInternalRepresentation initWithCoder:] + 238
13 Foundation 0x33c086f2 _decodeObjectStuff + 1034
14 Foundation 0x33c08200 -[NSXPCDecoder decodeObjectOfClasses:forKey:] + 76
15 Foundation 0x33c09fe8 _walkAndDecodeData + 1708
16 Foundation 0x33c0988c decodeInvocationArguments + 1368
17 Foundation 0x33c08fc8 -[NSXPCDecoder decodeInvocation] + 860
18 Foundation 0x33c08630 _decodeObjectStuff + 840
19 Foundation 0x33c08200 -[NSXPCDecoder decodeObjectOfClasses:forKey:] + 76
20 Foundation 0x33c07c04 -[NSXPCConnection _decodeAndInvokeReplyBlockWithData:] + 548
21 Foundation 0x33d1eedc __message_handler_block_invoke_0 + 32
22 libdispatch.dylib 0x3b40b11c _dispatch_call_block_and_release + 8
23 libdispatch.dylib 0x3b40a996 _dispatch_queue_drain$VARIANT$up + 142
24 libdispatch.dylib 0x3b40a890 _dispatch_queue_invoke$VARIANT$up + 32
25 libdispatch.dylib 0x3b419212 _dispatch_root_queue_drain + 190
26 libdispatch.dylib 0x3b4193b4 _dispatch_worker_thread2 + 80
27 libsystem_c.dylib 0x3b43fa0e _pthread_wqthread + 358
28 libsystem_c.dylib 0x3b43f8a0 start_wqthread + 4
Thread 7:
0 libsystem_kernel.dylib 0x3b4f1d98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x3b43fcf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x3b43fa12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x3b43f8a0 start_wqthread + 4
Thread 0 crashed with ARM Thread State (32-bit):
r0: 0x208a4ef0 r1: 0x38e042ae r2: 0x33f0ac6c r3: 0x00000008
r4: 0x20747372 r5: 0x2089ac70 r6: 0x33f0ac6c r7: 0x2fdd2df8
r8: 0x3b667530 r9: 0x0e3810ab r10: 0x00000000 r11: 0x1fd4dd90
ip: 0x3b5734ac sp: 0x2fdd2de0 lr: 0x3247f757 pc: 0x3afee5b6
cpsr: 0x20070030
答案 0 :(得分：12)
我刚才遇到过这个。通过在视图控制器的AVAudioPlayer方法中将delegate实例的nil设置为dealloc，可以解决此问题。除非你这样做，否则音频播放器会尝试对其委托进行最后一次调用，让它知道已完成播放。但如果代理人已被解除分配，那么你就会崩溃。
- (void)dealloc {
_myPlayer.delegate = nil; // _myPlayer is your AVAudioPlayer instance
[super dealloc]; // Only is you are not using ARC
}
答案 1 :(得分：0)