我的一位客户报告了一致的崩溃，大约75％的时间他在应用中执行特定操作。该操作涉及一些图像处理。他使用的是iPhone 4S（我在开发应用程序时使用的相同型号）和iOS 7.1.1。没有其他客户报告此问题。他删除了应用程序并从App Store重新安装。他正在使用应用的默认设置。我无法重现这个问题。
线程8崩溃，但在我的代码中没有显示任何行（＆＃34; gCard＆＃34;）。问题似乎是＆＃34; doesNotRecognizeSelector：＆＃34;在一个没有在我的代码中显示任何行的线程中。我不明白这一点。 （该应用程序使用brad Larson的GPUImage，但我不知道这是否是一个因素。）
我需要帮助才能理解下一步的转储和建议。
{"name":"gCard","bug_type":"109","os_version":"iPhone OS 7.1.1 (11D201)","bundleID":"com.PFM3.Ghost-Card","version":"1.2.1 (1.2.1)","app_name":"gCard"}
Incident Identifier: E85F86F8-0F39-4E55-9EAD-48461F1EF955
CrashReporter Key: 64c031d9f1572910e1137bebea2b9be924396928
Hardware Model: iPhone4,1
Process: gCard [136]
Path: /var/mobile/Applications/4E5D5D22-0202-47DE-B8B2-B9C9D90825B2/gCard.app/gCard
Identifier: com.PFM3.Ghost-Card
Version: 1.2.1 (1.2.1)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2014-06-23 00:03:18.728 -0700
OS Version: iOS 7.1.1 (11D201)
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x000000000000defe
Triggered by Thread: 8
Last Exception Backtrace:
0 CoreFoundation 0x2ec27fce __exceptionPreprocess + 126
1 libobjc.A.dylib 0x394a0cca objc_exception_throw + 34
2 CoreFoundation 0x2ec2b962 -[NSObject(NSObject) doesNotRecognizeSelector:] + 198
3 CoreFoundation 0x2ec2a24e ___forwarding___ + 702
4 CoreFoundation 0x2eb797b4 _CF_forwarding_prep_0 + 20
5 UIFoundation 0x36865a20 __NSStringDrawingEngine + 12200
6 UIFoundation 0x368629a2 -[NSString(NSExtendedStringDrawing) drawWithRect:options:attributes:context:] + 146
7 UIKit 0x3145cd1c -[UILabel _drawTextInRect:baselineCalculationOnly:] + 4220
8 UIKit 0x314c3004 -[UILabel drawTextInRect:] + 496
9 UIKit 0x314c2e06 -[UILabel drawRect:] + 74
10 UIKit 0x314c2da0 -[UIView(CALayerDelegate) drawLayer:inContext:] + 368
11 QuartzCore 0x310f02bc -[CALayer drawInContext:] + 96
12 QuartzCore 0x310d9e3a CABackingStoreUpdate_ + 1850
13 QuartzCore 0x311b4d68 ___ZN2CA5Layer8display_Ev_block_invoke + 48
14 QuartzCore 0x310d96ee x_blame_allocations + 78
15 QuartzCore 0x310d9396 CA::Layer::display_() + 1102
16 QuartzCore 0x310bd038 CA::Layer::display_if_needed(CA::Transaction*) + 204
17 QuartzCore 0x310bccd0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 20
18 QuartzCore 0x310bc6da CA::Context::commit_transaction(CA::Transaction*) + 226
19 QuartzCore 0x310bc4ea CA::Transaction::commit() + 310
20 QuartzCore 0x310e9a7e CA::Transaction::release_thread(void*) + 158
21 libsystem_pthread.dylib 0x39acb688 _pthread_tsd_cleanup + 160
22 libsystem_pthread.dylib 0x39acb406 _pthread_exit + 82
23 libsystem_pthread.dylib 0x39acabe2 _pthread_wqthread + 314
24 libsystem_pthread.dylib 0x39acaa94 start_wqthread + 4
Thread 0:
0 libsystem_kernel.dylib 0x39a50a58 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x39a50854 mach_msg + 44
2 CoreFoundation 0x2ebf2896 __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2ebf1002 __CFRunLoopRun + 850
4 CoreFoundation 0x2eb5bf0a CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2eb5bcee CFRunLoopRunInMode + 102
6 GraphicsServices 0x33ab465e GSEventRunModal + 134
7 UIKit 0x314a7168 UIApplicationMain + 1132
8 gCard 0x00089e12 main (main.m:16)
9 libdyld.dylib 0x399adab4 start + 0
Thread 1:
0 libsystem_kernel.dylib 0x39a50808 kevent64 + 24
1 libdispatch.dylib 0x39992078 _dispatch_mgr_invoke + 228
2 libdispatch.dylib 0x39991dfe _dispatch_mgr_thread$VARIANT$mp + 34
Thread 2:
0 libsystem_kernel.dylib 0x39a50a58 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x39a50854 mach_msg + 44
2 CoreFoundation 0x2ebf2896 __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2ebf0fbc __CFRunLoopRun + 780
4 CoreFoundation 0x2eb5bf0a CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2eb5bcee CFRunLoopRunInMode + 102
6 Foundation 0x2f54e1e6 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 250
7 Foundation 0x2f59f09c -[NSRunLoop(NSRunLoop) run] + 76
8 gCard 0x000cd8d4 +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:151)
9 Foundation 0x2f610a5a __NSThread__main__ + 1058
10 libsystem_pthread.dylib 0x39acc916 _pthread_body + 138
11 libsystem_pthread.dylib 0x39acc886 _pthread_start + 98
12 libsystem_pthread.dylib 0x39acaaa0 thread_start + 4
Thread 3:
0 libsystem_kernel.dylib 0x39a50a58 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x39a50854 mach_msg + 44
2 CoreFoundation 0x2ebf2896 __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2ebf0fbc __CFRunLoopRun + 780
4 CoreFoundation 0x2eb5bf0a CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2eb9f9fe CFRunLoopRun + 94
6 CoreMotion 0x2f2193a8 ___lldb_unnamed_function1423$$CoreMotion + 724
7 libsystem_pthread.dylib 0x39acc916 _pthread_body + 138
8 libsystem_pthread.dylib 0x39acc886 _pthread_start + 98
9 libsystem_pthread.dylib 0x39acaaa0 thread_start + 4
Thread 4 name: com.apple.NSURLConnectionLoader
Thread 4:
0 libsystem_kernel.dylib 0x39a50a58 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x39a50854 mach_msg + 44
2 CoreFoundation 0x2ebf2896 __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2ebf0fbc __CFRunLoopRun + 780
4 CoreFoundation 0x2eb5bf0a CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2eb5bcee CFRunLoopRunInMode + 102
6 Foundation 0x2f59b082 +[NSURLConnection(Loader) _resourceLoadLoop:] + 314
7 Foundation 0x2f610a5a __NSThread__main__ + 1058
8 libsystem_pthread.dylib 0x39acc916 _pthread_body + 138
9 libsystem_pthread.dylib 0x39acc886 _pthread_start + 98
10 libsystem_pthread.dylib 0x39acaaa0 thread_start + 4
Thread 5 name: com.apple.CFSocket.private
Thread 5:
0 libsystem_kernel.dylib 0x39a63434 __select + 20
1 CoreFoundation 0x2ebf6758 __CFSocketManager + 480
2 libsystem_pthread.dylib 0x39acc916 _pthread_body + 138
3 libsystem_pthread.dylib 0x39acc886 _pthread_start + 98
4 libsystem_pthread.dylib 0x39acaaa0 thread_start + 4
Thread 6:
0 libsystem_kernel.dylib 0x39a63c70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39acabda _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39acaa94 start_wqthread + 4
Thread 7:
0 libsystem_kernel.dylib 0x39a63c70 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x39acabda _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x39acaa94 start_wqthread + 4
Thread 8 Crashed:
0 libsystem_c.dylib 0x39a1404e __abort + 102
1 libsystem_c.dylib 0x39a13fe4 abort + 84
2 libc++abi.dylib 0x38d42cd2 abort_message + 70
3 libc++abi.dylib 0x38d5b6e0 default_terminate_handler() + 248
4 libobjc.A.dylib 0x394a0f62 _objc_terminate() + 190
5 libc++abi.dylib 0x38d591c4 std::__terminate(void (*)()) + 76
6 libc++abi.dylib 0x38d58a18 __cxa_throw + 112
7 libobjc.A.dylib 0x394a0d9e objc_exception_throw + 246
8 CoreFoundation 0x2ec2b962 -[NSObject(NSObject) doesNotRecognizeSelector:] + 198
9 CoreFoundation 0x2ec2a24e ___forwarding___ + 702
10 CoreFoundation 0x2eb797b4 _CF_forwarding_prep_0 + 20
11 UIFoundation 0x36865a20 __NSStringDrawingEngine + 12200
12 UIFoundation 0x368629a2 -[NSString(NSExtendedStringDrawing) drawWithRect:options:attributes:context:] + 146
13 UIKit 0x3145cd1c -[UILabel _drawTextInRect:baselineCalculationOnly:] + 4220
14 UIKit 0x314c3004 -[UILabel drawTextInRect:] + 496
15 UIKit 0x314c2e06 -[UILabel drawRect:] + 74
16 UIKit 0x314c2da0 -[UIView(CALayerDelegate) drawLayer:inContext:] + 368
17 QuartzCore 0x310f02bc -[CALayer drawInContext:] + 96
18 QuartzCore 0x310d9e3c CABackingStoreUpdate_ + 1852
19 QuartzCore 0x311b4d68 ___ZN2CA5Layer8display_Ev_block_invoke + 48
20 QuartzCore 0x310d96f0 x_blame_allocations + 80
21 QuartzCore 0x310d9396 CA::Layer::display_() + 1102
22 QuartzCore 0x310bd038 CA::Layer::display_if_needed(CA::Transaction*) + 204
23 QuartzCore 0x310bccd0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 20
24 QuartzCore 0x310bc6da CA::Context::commit_transaction(CA::Transaction*) + 226
25 QuartzCore 0x310bc4ea CA::Transaction::commit() + 310
26 QuartzCore 0x310e9a7e CA::Transaction::release_thread(void*) + 158
27 libsystem_pthread.dylib 0x39acb68a _pthread_tsd_cleanup + 162
28 libsystem_pthread.dylib 0x39acb406 _pthread_exit + 82
29 libsystem_pthread.dylib 0x39acabe2 _pthread_wqthread + 314
30 libsystem_pthread.dylib 0x39acaa94 start_wqthread + 4
Thread 8 crashed with ARM Thread State (32-bit):
r0: 0x00000000 r1: 0x00000000 r2: 0x00000000 r3: 0x00000001
r4: 0x06277c84 r5: 0xffffffff r6: 0x00000000 r7: 0x06277c94
r8: 0x1767ed40 r9: 0x39ac7f69 r10: 0x368b94c8 r11: 0x00000000
ip: 0x00000030 sp: 0x06277c7c lr: 0x39a1404f pc: 0x39a1404e
cpsr: 0x40000030
答案 0 :(得分：1)
您应该/必须在主线程上执行所有（或几乎所有）ui特定操作。可能是您在另一个块上执行的块中更改了视图层次结构。