Question

我正在为我的应用程序使用CoreData，但它无法运行。我有一个名为＆＃34; Task＆＃34;并且该实体有一个名为Task.swift的类

这是我收到的错误消息;

2015-12-07 17:13:24.669 ToDoList[8002:64192] CoreData: warning: Unable to load class named 'Task' for entity 'Task'.  Class not found, using default NSManagedObject instead.
2015-12-07 17:13:24.677 ToDoList[8002:64192] *** Assertion failure in -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:], /SourceCache/UIKit_Sim/UIKit-3347.44.2/UITableView.m:6245
2015-12-07 17:13:24.679 ToDoList[8002:64192] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier reuseIdentifier - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010f7ebc65 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x0000000111356bb7 objc_exception_throw + 45
    2   CoreFoundation                      0x000000010f7ebaca +[NSException raise:format:arguments:] + 106
    3   Foundation                          0x000000010fc8898f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
    4   UIKit                               0x000000011017e264 -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:] + 153
    5   ToDoList                            0x000000010f1efd83 _TFC8ToDoList27TaskListTableViewController9tableViewfS0_FTCSo11UITableView21cellForRowAtIndexPathCSo11NSIndexPath_CSo15UITableViewCell + 147
    6   ToDoList                            0x000000010f1f029f _TToFC8ToDoList27TaskListTableViewController9tableViewfS0_FTCSo11UITableView21cellForRowAtIndexPathCSo11NSIndexPath_CSo15UITableViewCell + 79
    7   UIKit                               0x000000011018b9e8 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 508
    8   UIKit                               0x000000011016a208 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2853
    9   UIKit                               0x0000000110180869 -[UITableView layoutSubviews] + 210
    10  UIKit                               0x000000011010a9eb -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 536
    11  QuartzCore                          0x0000000113ed8ed2 -[CALayer layoutSublayers] + 146
    12  QuartzCore                          0x0000000113ecd6e6 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
    13  QuartzCore                          0x0000000113ecd556 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
    14  QuartzCore                          0x0000000113e3986e _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
    15  QuartzCore                          0x0000000113e3aa22 _ZN2CA11Transaction6commitEv + 462
    16  UIKit                               0x00000001100889ed -[UIApplication _reportMainSceneUpdateFinished:] + 44
    17  UIKit                               0x00000001100896b1 -[UIApplication _runWithMainScene:transitionContext:completion:] + 2648
    18  UIKit                               0x0000000110088095 -[UIApplication workspaceDidEndTransaction:] + 179
    19  FrontBoardServices                  0x0000000112e535e5 __31-[FBSSerialQueue performAsync:]_block_invoke_2 + 21
    20  CoreFoundation                      0x000000010f71f41c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
    21  CoreFoundation                      0x000000010f715165 __CFRunLoopDoBlocks + 341
    22  CoreFoundation                      0x000000010f714f25 __CFRunLoopRun + 2389
    23  CoreFoundation                      0x000000010f714366 CFRunLoopRunSpecific + 470
    24  UIKit                               0x0000000110087b02 -[UIApplication _run] + 413
    25  UIKit                               0x000000011008a8c0 UIApplicationMain + 1282
    26  ToDoList                            0x000000010f1ecb47 main + 135
    27  libdyld.dylib                       0x0000000111a8c145 start + 1
    28  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

类别：

import Foundation
import CoreData

class Task: NSManagedObject {

    @NSManaged var tDesc: String
    @NSManaged var tImage: NSData
    @NSManaged var tName: String

}

我已经看过关于这个主题的其他问题，但他们并没有多大帮助。我不知道还能做什么。请有人帮忙！

谢谢

Answer 1

问题在于快速和包管理。在数据模型编辑器中，确保模块设置正确。如果设置为“none”，那么这就是您的问题的根源。将其更改为当前项目。

Answer 2

这可能是模拟器错误（有时如果您更改核心数据文件的名称，或者如果您移动代码，则模拟器数据会混淆）。尝试进入模拟器并执行模拟器 - >重置内容和设置 这将重新启动模拟器擦干净。

CoreData：警告：无法加载名为＆＃39;任务＆＃39;对于实体＆＃39;任务＆＃39;。找不到类，使用默认的NSManagedObject而不是

2 个答案: