__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ 18 23 CoreFoundation崩溃

Question

我在跟踪克拉什。谁能告诉我这次崩溃的原因？

__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18 23  CoreFoundation  crash

我没有使用线程。NSZombieEnabled和仪器根本没有澄清坠机的原因。请帮帮我。

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0   libobjc.A.dylib                 0x3b0805be objc_msgSend + 30
1   CoreFoundation                  0x3332130c CFRelease + 96
2   CoreFoundation                  0x333fc430 __CFBasicHashDrain + 256
3   CoreFoundation                  0x333213ce CFRelease + 290
4   CoreFoundation                  0x333fc430 __CFBasicHashDrain + 256
5   CoreFoundation                  0x333213ce CFRelease + 290
6   ImageIO                         0x34013008 _CGImagePlusFinalize + 48
7   CoreFoundation                  0x333213ce CFRelease + 290
8   CoreFoundation                  0x333fc430 __CFBasicHashDrain + 256
9   CoreFoundation                  0x333213ce CFRelease + 290
10  ImageIO                         0x34179bb2 releaseInfoPNG + 18
11  ImageIO                         0x34029ae4 ImageProviderReleaseInfoCallback + 32
12  CoreGraphics                    0x3346b1c8 image_provider_finalize + 32
13  CoreFoundation                  0x333213ce CFRelease + 290
14  CoreGraphics                    0x33464f48 image_finalize + 60
15  CoreFoundation                  0x333213ce CFRelease + 290
16  QuartzCore                      0x34fa44ce CA::Layer::State::~State() + 94
17  QuartzCore                      0x34fa7a4e CA::Layer::~Layer() + 290
18  QuartzCore                      0x34fa77ae -[CALayer dealloc] + 138
19  QuartzCore                      0x34f97a70 CA::Layer::free_transaction(CA::Transaction*) + 68
20  QuartzCore                      0x34f960a4 CA::Transaction::commit() + 400
21  QuartzCore                      0x34f95eac CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 56
22  CoreFoundation                  0x333b56ca __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18
23  CoreFoundation                  0x333b39bc __CFRunLoopDoObservers + 272
24  CoreFoundation                  0x333b3d12 __CFRunLoopRun + 738
25  CoreFoundation                  0x33326eb8 CFRunLoopRunSpecific + 352
26  CoreFoundation                  0x33326d44 CFRunLoopRunInMode + 100
27  GraphicsServices                0x36eea2e6 GSEventRunModal + 70
28  UIKit                           0x3523c2fc UIApplicationMain + 1116

​

Answer 1

使用NSNotificationCenter时会发生此崩溃

您向已释放的对象注册了通知观察者，但未删除该观察者。因此，当它试图调用选择器时，它会崩溃。

如果您正在使用某种类型的ViewController，则可以添加

[[NSNotificationCenter defaultCenter] removeObserver:self name:@"Notification" object:nil];

到viewWillDisappear

如果它不是观察者，您可以使用-(void) dealloc取消注册观察者。