得到"valueForUndefinedKey:当使用NSArrayController时,此类不是键值错误的键值编码"

Question

我正在使用Swift为NSCollectionView工作.当我使用NSArrayController对象作为NSCollectionView的内容时.我得到了以下错误:

提出了未被捕获的例外情况

[valueForUndefinedKey:]:此类不是键值plugName的键值编码兼容.

我不知道为什么.我创建了一个名为NHPlug和NSArrayController的模型,如下所示,这是我的代码.:

/* Class NHAppController */
import Cocoa

class NHAppController: NSObject {
    @IBOutlet weak var arrayController: NSArrayController?

    var plugs: NSMutableArray?

    override func awakeFromNib() {
        var t = NHPlug(plugID: 1, plugName: "test")
        plugs = NSMutableArray()
        arrayController?.addObject(t)
    }
}

/* Class NSPlug */
import Cocoa

class NHPlug: NSObject {

    var plugID : Int
    var plugName : String

    init(plugID: Int, plugName: String) {
        self.plugID = plugID
        self.plugName = plugName;
    }

}

如果有人可以帮助,非常感谢!

这里如果崩溃堆栈:

-01-21 19:47:07.347 Notifyhub [58369:598950]一个未被捕获的异常被提出2015-01-21 19:47:07.347 Notifyhub [58369:598950] [valueForUndefinedKey:]:这个类不符合键值编码对于密钥plugName.2015-01-21 19:47:07.348 Notifyhub [58369:598950](0 CoreFoundation
0x00007fff9220b64c __exceptionPreprocess + 172 1 libobjc.A.dylib
0x00007fff950966de objc_exception_throw + 43 2 CoreFoundation
0x00007fff9220b1e9 - [NSException raise] + 9 3 Foundation
0x00007fff8bd6c5ed - [NSObject(NSKeyValueCoding)valueForUndefinedKey:] + 226 4 Foundation 0x00007fff8bc89e68 - [NSObject(NSKeyValueCoding)valueForKey:] + 385 5 Foundation 0x00007fff8bca28e3 - [NSObject(NSKeyValueCoding)valueForKeyPath:] + 324 6 Foundation 0x00007fff8bca28af - [NSObject(NSKeyValueCoding)valueForKeyPath :] + 272 7 AppKit 0x00007fff8975c8bf - [NSBinder valueForBinding:resolveMarkersToPlaceholders:] + 164 8 AppKit
0x00007fff89760700 - [NSValueBinder _adjustObject:mode:observedController:observedKeyPath:context:editableState:adjustState:] + 302 9 AppKit 0x00007fff8976053b - [NSValueBinder _observeValueForKeyPath:ofObject:context:] + 276 10 AppKit 0x00007fff897603ab - [NSTextValueBinder _observeValueForKeyPath:ofObject:context:] + 43 11基础0x00007fff8bc63c73 NSKeyValueNotifyObserver + 382 12基础
0x00007fff8bc62e48 NSKeyValueDidChange + 463 13基础
0x00007fff8bc679ad - [NSObject(NSKeyValueObserverNotification)didChangeValueForKey:] + 118 14 AppKit
0x00007fff89eb5e83 - [NSCollectionView newItemForRepresentedObject:] + 87 15了AppKit 0x00007fff89ebce03 - [NSCollectionView _getItemsToDisplay] + 1168 16了AppKit 0x00007fff89eb5595 - [NSCollectionView setContent:] + 217 17了AppKit
0x00007fff89e8e965 - [NSCollectionViewBinder _updateContent] + 93 18了AppKit 0x00007fff89e8e9f0 - [NSCollectionViewBinder _observeValueForKeyPath:ofObject:上下文:] + 84 19基金会0x00007fff8bc63c73 NSKeyValueNotifyObserver + 382 20基金会
0x00007fff8bca22a6 - [NSObject的(NSKeyValueObservingPrivate)_notifyObserversForKeyPath:变化:] + 1142 21了AppKit 0x00007fff897533ba - [NSController _notifyObserversForKeyPath:变化:] + 206 22了AppKit 0x00007fff8984f126 - [NSArrayController的didChangeValuesForArrangedKeys:objectKeys:indexKeys:] + 54 23了AppKit 0x00007fff89a1dbd0 - [NSArrayController的_insertObject: atArrangedObjectIndex:objectHandler:] + 514 24 AppKit 0x00007fff89a1d82c - [NSArrayController addObject:] + 153 25 Notifyhub 0x000000010000166a _TFC9Notifyhub15NHAppController12awakeFromNibfS0_FT_T_ + 362 26 Notifyhub 0x00000001000016d2 _TToFC9Notifyhub15NHAppController12awakeFromNibfS0_FT_T_ + 34 27 CoreFoundation 0x00007fff9211983f - [NSSet makeObjectsPerformSelector:] + 223 28 AppKit
0x00007fff89ba2ffd - [NSIBObjectData nibInstantiateWithOwner:选择:topLevelObjects:] + 1216 29了AppKit
0x00007fff89c22122 - [NSNib _instantiateNibWithExternalNameTable:选择:] + 677 30了AppKit 0x00007fff89c22236 - [NSNib _instantiateWithOwner:选择:topLevelObjects:] + 143 31了AppKit 0x00007fff89d5f36c - [NSStoryboard instantiateControllerWithIdentifier:] + 181 32 AppKit
0x00007fff896afef4 NSApplicationMain + 840 33 Notifyhub
0x00000001000011c2 top_level_code + 34 34 Notifyhub
0x00000001000011fa main + 42 35 libdyld.dyli

Answer 1

我自己得到了答案.发布在这里帮助任何可怜的新人Swift.

在Swift中,KVO不再是默认支持,当您声明变量时必须设置" 动态 ",如下所示:

dynamic var plugID : Int
dynamic var plugName : String