Ios 获取错误“-[NSThread threadDictionary]：发送到解除分配实例的消息；
在为我的项目编写代码后，我注意到调试器会暂停我的应用程序，并将Ios 获取错误“-[NSThread threadDictionary]：发送到解除分配实例的消息；,ios,objective-c,xcode,lldb,Ios,Objective C,Xcode,Lldb,在为我的项目编写代码后，我注意到调试器会暂停我的应用程序，并将lldb放在控制台中，不允许我继续。我使用了NSZombies，得到了这样一条消息：“-[NSThread threadDictionary]：发送到解除分配实例的消息”。我环顾四周，但找不到任何帮助，这是什么原因造成的。当我打印回溯跟踪时，我得到： thread #17: tid = 0x7886f, 0x0000000180f7ab40 CoreFoundation`___forwarding___ + 700, stop rea
lldbNSZombies-[NSThread threadDictionary]：发送到解除分配实例的消息thread #17: tid = 0x7886f, 0x0000000180f7ab40 CoreFoundation`___forwarding___ + 700, stop reason = EXC_BREAKPOINT (code=1, subcode=0x180f7ab40)
frame #0: 0x0000000180f7ab40 CoreFoundation`___forwarding___ + 700
frame #1: 0x0000000180e78c5c CoreFoundation`_CF_forwarding_prep_0 + 92
frame #2: 0x00000001860536dc UIFoundation`+[NSStringDrawingTextStorageSettings threadSpecificStringDrawingTextStorageSettings:] + 64
frame #3: 0x000000018604900c UIFoundation`+[NSString(NSStringDrawing) typesetterBehavior] + 32
frame #4: 0x000000018604a6d4 UIFoundation`__NSStringDrawingEngine + 244
frame #5: 0x000000018604a4d0 UIFoundation`-[NSString(NSExtendedStringDrawing) drawWithRect:options:attributes:context:] + 176
frame #6: 0x00000001860eb564 UIKit`-[UILabel _drawTextInRect:baselineCalculationOnly:] + 3856
frame #7: 0x000000018615e8f0 UIKit`-[UILabel drawTextInRect:] + 544
frame #8: 0x000000018615e678 UIKit`-[UIView(CALayerDelegate) drawLayer:inContext:] + 368
frame #9: 0x0000000183a92230 QuartzCore`-[CALayer drawInContext:] + 260
frame #10: 0x0000000183a7c8b4 QuartzCore`CABackingStoreUpdate_ + 2432
frame #11: 0x0000000183b94360 QuartzCore`___ZN2CA5Layer8display_Ev_block_invoke + 52
frame #12: 0x0000000183a7ba90 QuartzCore`CA::Layer::display_() + 1368
frame #13: 0x0000000183a5d7b0 QuartzCore`CA::Layer::display_if_needed(CA::Transaction*) + 228
frame #14: 0x0000000183a5d49c QuartzCore`CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 44
frame #15: 0x0000000183a5cac0 QuartzCore`CA::Context::commit_transaction(CA::Transaction*) + 252
frame #16: 0x0000000183a5c820 QuartzCore`CA::Transaction::commit() + 500
frame #17: 0x0000000183a8bbd4 QuartzCore`CA::Transaction::release_thread(void*) + 236
frame #18: 0x0000000180bda1e0 libsystem_pthread.dylib`_pthread_tsd_cleanup + 584
frame #19: 0x0000000180bd9d58 libsystem_pthread.dylib`_pthread_exit + 136
frame #20: 0x0000000180bd953c libsystem_pthread.dylib`_pthread_wqthread + 1296
frame #21: 0x0000000180bd9020 libsystem_pthread.dylib`start_wqthread + 4
任何有助于了解情况的人都会大有裨益 您正在调用任何类的实例方法，而类对象为nil。发现问题在于我有一个带有弱引用的标签。我把它藏了好长一段时间，垃圾收集站似乎清理干净了。所以，当我试图向它发送数据时，它已经被解除锁定。我猜：你正在做的事情会导致后台线程上的UI更新。我建议检查你的代码，确保任何涉及UI元素的内容都被移动到主线程。发送到nil是可以的。不允许发送到已解除分配的非nil引用。