Xcode错误 – 终止应用程序由于未捕获的exception“NSUnknownKeyException”，原因：'：
我不知道哪里可以问题：/
2014-04-11 22:36:33.815 bus[1432:60b] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<TableViewCell 0x8e63160> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key DescriptionLablel.' *** First throw call stack: ( 0 CoreFoundation 0x017ee1e4 __exceptionPreprocess + 180 1 libobjc.A.dylib 0x0156d8e5 objc_exception_throw + 44 2 CoreFoundation 0x0187dfe1 -[NSException raise] + 17 3 Foundation 0x0122dd9e -[NSObject(NSKeyValueCoding) setValue:forUndefinedKey:] + 282 4 Foundation 0x0119a1d7 _NSSetUsingKeyValueSetter + 88 5 Foundation 0x01199731 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 267 6 UIKit 0x0029c508 -[UIView(CALayerDelegate) setValue:forKey:] + 168 7 Foundation 0x011fbb0a -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 412 8 UIKit 0x004e41f4 -[UIRuntimeOutletConnection connect] + 106 9 libobjc.A.dylib 0x0157f7de -[NSObject performSelector:] + 62 10 CoreFoundation 0x017e976a -[NSArray makeObjectsPerformSelector:] + 314 11 UIKit 0x004e2d4d -[UINib instantiateWithOwner:options:] + 1417 12 UIKit 0x00319db0 -[UITableView _dequeueReusableViewOfType:withIdentifier:] + 370 13 UIKit 0x0031a089 -[UITableView dequeueReusableCellWithIdentifier:] + 48 14 UIKit 0x0031a0b9 -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:] + 43 15 bus 0x000034bf -[TableViewController tableView:cellForRowAtIndexPath:] + 127 16 UIKit 0x0032611f -[UITableView _createPreparedCellForGlobalRow:withIndexPath:] + 412 17 UIKit 0x003261f3 -[UITableView _createPreparedCellForGlobalRow:] + 69 18 UIKit 0x00307ece -[UITableView _updateVisibleCellsNow:] + 2428 19 UIKit 0x0031c6a5 -[UITableView layoutSubviews] + 213 20 UIKit 0x0029c964 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355 21 libobjc.A.dylib 0x0157f82b -[NSObject performSelector:withObject:] + 70 22 QuartzCore 0x03c5945a -[CALayer layoutSublayers] + 148 23 QuartzCore 0x03c4d244 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380 24 QuartzCore 0x03c593a5 -[CALayer layoutIfNeeded] + 160 25 UIKit 0x0035eae3 -[UIViewController window:setupWithInterfaceOrientation:] + 304 26 UIKit 0x00274aa7 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:isRotating:] + 5212 27 UIKit 0x00273646 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:] + 82 28 UIKit 0x00273518 -[UIWindow _setRotatableViewOrientation:updateStatusBar:duration:force:] + 117 29 UIKit 0x002735a0 -[UIWindow _setRotatableViewOrientation:duration:force:] + 67 30 UIKit 0x0027263a __57-[UIWindow _updateToInterfaceOrientation:duration:force:]_block_invoke + 120 31 UIKit 0x0027259c -[UIWindow _updateToInterfaceOrientation:duration:force:] + 400 32 UIKit 0x002732f3 -[UIWindow setAutorotates:forceUpdateInterfaceOrientation:] + 870 33 UIKit 0x002768e6 -[UIWindow setDelegate:] + 449 34 UIKit 0x00350b77 -[UIViewController _tryBecomeRootViewControllerInWindow:] + 180 35 UIKit 0x0026c474 -[UIWindow addRootViewControllerViewIfPossible] + 591 36 UIKit 0x0026c5ef -[UIWindow _setHidden:forced:] + 312 37 UIKit 0x0026c86b -[UIWindow _orderFrontWithoutMakingKey] + 49 38 UIKit 0x002773c8 -[UIWindow makeKeyAndVisible] + 65 39 UIKit 0x00227bc0 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 2097 40 UIKit 0x0022c667 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 824 41 UIKit 0x00240f92 -[UIApplication handleEvent:withNewEvent:] + 3517 42 UIKit 0x00241555 -[UIApplication sendEvent:] + 85 43 UIKit 0x0022e250 _UIApplicationHandleEvent + 683 44 GraphicsServices 0x037e3f02 _PurpleEventCallback + 776 45 GraphicsServices 0x037e3a0d PurpleEventCallback + 46 46 CoreFoundation 0x01769ca5 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53 47 CoreFoundation 0x017699db __CFRunLoopDoSource1 + 523 48 CoreFoundation 0x0179468c __CFRunLoopRun + 2156 49 CoreFoundation 0x017939d3 CFRunLoopRunSpecific + 467 50 CoreFoundation 0x017937eb CFRunLoopRunInMode + 123 51 UIKit 0x0022bd9c -[UIApplication _run] + 840 52 UIKit 0x0022df9b UIApplicationMain + 1225 53 bus 0x00003a4d main + 141 54 libdyld.dylib 0x01e35701 start + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException (lldb) 这意味着在一个nib文件中有一个名为DescriptionLablel的sockets，但是在代码中没有它的属性。 “标签”拼写错误，这可能是你的问题。