我的应用程序在闲置30分钟后崩溃了。以下是崩溃报告..
应用程序已加载，但是当我尝试打开一个弹出窗口控件（WYPopoverControl）时，它无法打开，一段时间后，当我专注于任何文本框时，它将随机崩溃。崩溃后，当应用程序重新打开时，一切都将恢复正常运行。我该如何调试这些问题？
崩溃看起来好像我没有从通知中心移除观察者..我把RemoveObserver放在dealloc操作系统所需的所有位置..但它仍然崩溃
Thread 0 Crashed:
0 libobjc.A.dylib 0x39a8fb26 objc_msgSend + 6
1 CoreFoundation 0x2f616116 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 10
2 CoreFoundation 0x2f58a252 _CFXNotificationPost + 1714
3 Foundation 0x2ff6fc28 -[NSNotificationCenter postNotificationName:object:userInfo:] + 72
4 UIKit 0x31dcc6b2 -[UIDevice setOrientation:animated:] + 290
5 UIKit 0x31dcbcfc -[UIApplication handleEvent:withNewEvent:] + 1304
6 UIKit 0x31dcb71c -[UIApplication sendEvent:] + 68
7 UIKit 0x31e30b38 _UIApplicationHandleEvent + 660
8 GraphicsServices 0x342af70a _PurpleEventCallback + 606
9 GraphicsServices 0x342af2f2 PurpleEventCallback + 30
10 CoreFoundation 0x2f61e9dc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
11 CoreFoundation 0x2f61e976 __CFRunLoopDoSource1 + 342
12 CoreFoundation 0x2f61d14a __CFRunLoopRun + 1394
13 CoreFoundation 0x2f587c22 CFRunLoopRunSpecific + 518
14 CoreFoundation 0x2f587a06 CFRunLoopRunInMode + 102
15 GraphicsServices 0x342ae27e GSEventRunModal + 134
16 UIKit 0x31e2b044 UIApplicationMain + 1132
17 dark 0x000e7a78 0xe0000 + 31352
18 libdyld.dylib 0x39f9cab4 start + 0
Thread 1:
0 libsystem_kernel.dylib 0x3a04083c kevent64 + 24
1 libdispatch.dylib 0x39f81210 _dispatch_mgr_invoke + 228
2 libdispatch.dylib 0x39f80f96 _dispatch_mgr_thread$VARIANT$mp + 34
Thread 2:
0 libsystem_kernel.dylib 0x3a052f38 __psynch_cvwait + 24
1 libsystem_pthread.dylib 0x3a0bb224 _pthread_cond_wait + 536
2 libsystem_pthread.dylib 0x3a0bc000 pthread_cond_wait + 36
3 Foundation 0x2ffc23f2 -[NSCondition wait] + 190
4 dark 0x002e11aa 0xe0000 + 2101674
5 Foundation 0x30037c82 __NSThread__main__ + 1058
6 libsystem_pthread.dylib 0x3a0bbc1a _pthread_body + 138
7 libsystem_pthread.dylib 0x3a0bbb8a _pthread_start + 98
8 libsystem_pthread.dylib 0x3a0b9c8c thread_start + 4
Thread 3:
0 libsystem_kernel.dylib 0x3a040a8c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a040888 mach_msg + 44
2 CoreFoundation 0x2f61e7be __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2f61cee4 __CFRunLoopRun + 780
4 CoreFoundation 0x2f587c22 CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2f587a06 CFRunLoopRunInMode + 102
6 Foundation 0x2ff753d6 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 250
7 Foundation 0x2ffc630c -[NSRunLoop(NSRunLoop) run] + 76
8 dark 0x003073a0 0xe0000 + 2257824
9 Foundation 0x30037c82 __NSThread__main__ + 1058
10 libsystem_pthread.dylib 0x3a0bbc1a _pthread_body + 138
11 libsystem_pthread.dylib 0x3a0bbb8a _pthread_start + 98
12 libsystem_pthread.dylib 0x3a0b9c8c thread_start + 4
Thread 4 name: com.apple.NSURLConnectionLoader
Thread 4:
0 libsystem_kernel.dylib 0x3a040a8c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a040888 mach_msg + 44
2 CoreFoundation 0x2f61e7be __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2f61cee4 __CFRunLoopRun + 780
4 CoreFoundation 0x2f587c22 CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2f587a06 CFRunLoopRunInMode + 102
6 Foundation 0x2ffc22f2 +[NSURLConnection(Loader) _resourceLoadLoop:] + 314
7 Foundation 0x30037c82 __NSThread__main__ + 1058
8 libsystem_pthread.dylib 0x3a0bbc1a _pthread_body + 138
9 libsystem_pthread.dylib 0x3a0bbb8a _pthread_start + 98
10 libsystem_pthread.dylib 0x3a0b9c8c thread_start + 4
Thread 5 name: AFNetworking
Thread 5:
0 libsystem_kernel.dylib 0x3a040a8c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a040888 mach_msg + 44
2 CoreFoundation 0x2f61e7be __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2f61cee4 __CFRunLoopRun + 780
4 CoreFoundation 0x2f587c22 CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2f587a06 CFRunLoopRunInMode + 102
6 Foundation 0x2ff753d6 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 250
7 Foundation 0x2ffc630c -[NSRunLoop(NSRunLoop) run] + 76
8 dark 0x00151150 0xe0000 + 463184
9 Foundation 0x30037c82 __NSThread__main__ + 1058
10 libsystem_pthread.dylib 0x3a0bbc1a _pthread_body + 138
11 libsystem_pthread.dylib 0x3a0bbb8a _pthread_start + 98
12 libsystem_pthread.dylib 0x3a0b9c8c thread_start + 4
Thread 6 name: com.apple.CFSocket.private
Thread 6:
0 libsystem_kernel.dylib 0x3a053440 select$DARWIN_EXTSN + 20
1 CoreFoundation 0x2f622680 __CFSocketManager + 480
2 libsystem_pthread.dylib 0x3a0bbc1a _pthread_body + 138
3 libsystem_pthread.dylib 0x3a0bbb8a _pthread_start + 98
4 libsystem_pthread.dylib 0x3a0b9c8c thread_start + 4
Thread 7:
0 libsystem_kernel.dylib 0x3a040a8c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a040888 mach_msg + 44
2 CoreFoundation 0x2f61e7be __CFRunLoopServiceMachPort + 150
3 CoreFoundation 0x2f61cee4 __CFRunLoopRun + 780
4 CoreFoundation 0x2f587c22 CFRunLoopRunSpecific + 518
5 CoreFoundation 0x2f5cb736 CFRunLoopRun + 94
6 CoreMotion 0x2fc3e230 ___lldb_unnamed_function1404$$CoreMotion + 724
7 libsystem_pthread.dylib 0x3a0bbc1a _pthread_body + 138
8 libsystem_pthread.dylib 0x3a0bbb8a _pthread_start + 98
9 libsystem_pthread.dylib 0x3a0b9c8c thread_start + 4
Thread 8:
0 libsystem_kernel.dylib 0x3a053c7c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x3a0b9dc6 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x3a0b9c80 start_wqthread + 4
Thread 9:
0 libsystem_kernel.dylib 0x3a053c7c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x3a0b9dc6 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x3a0b9c80 start_wqthread + 4
Thread 10:
0 libsystem_kernel.dylib 0x3a053c7c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x3a0b9dc6 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x3a0b9c80 start_wqthread + 4
Thread 0 crashed with ARM Thread State (32-bit):
r0: 0x17f45e70 r1: 0x00333765 r2: 0x1b88c240 r3: 0x00002060
r4: 0x17f1cbc0 r5: 0x27d21b80 r6: 0x27d21bdc r7: 0x27d21aa0
r8: 0x1658a788 r9: 0x756f5935 r10: 0x00000000 r11: 0x00000001
ip: 0x3a326744 sp: 0x27d21aa0 lr: 0x2f616119 pc: 0x39a8fb26
cpsr: 0x20000030
答案 0 :(得分：2)
您使用addObserver注册了通知，但您从未将自己删除为该注释的接收者。使用removeObserver（均使用Notification Center）。
现在你原来的'听众'消失了，但因为它仍然是注册的 - BOOM
所以不要忘记取消注册！
答案 1 :(得分：-1)
之前我见过类似的骚扰者。我有两个建议： 1.在viewWillAppear中添加一个观察者，并在viewWillDisAppear中将其删除 2.将观察者分配到如下实例：
NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
NSOperationQueue *mainQueue = [NSOperationQueue mainQueue];
self.localObserver = [center addObserverForName:NSManagedObjectContextObjectsDidChangeNotification
object:self.managedObjectContext queue:mainQueue usingBlock:^(NSNotification *notification) {
//do something when you get this notification
}];
然后在你的viewWillDisAppear中使用：
取消注册[[NSNotificationCenter defaultCenter] removeObserver:self.localObserver];
我看到的是在iOS 8中没有调用dealloc。只有在收到内存警告时才会调用它。所以尽量不要在那里取消注册。在早期版本中，它曾经像那样工作。
注意：在上面的代码片段中，我正在观察NSManagedObjectContextObjectsDidChangeNotification。您可以根据自己的要求进行更改。