Swift 如何将NSData转换为NSDictionary？

我已经尝试了我在这里找到的这个解决方案，但它不起作用，我不断地得到这个错误：

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

（***由于未捕获异常而终止应用程序 “NSInvalidArgumentException”，原因：'-[NSManagedObject initWithCoder:：发送到实例的选择器无法识别 0x7fb7286f36c0'）

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

在将NSDictionary转换为NSData后，我将其保存到核心数据，然后我的获取看起来如下所示

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
        let context :NSManagedObjectContext = appDel.managedObjectContext
    let noteDict = NSFetchRequest(entityName: "NoteDictionary")
                noteDict.returnsObjectsAsFaults = false


            let dicResults : NSArray
            try! dicResults = context.executeFetchRequest(noteDict)

            var tempData:NSData
                tempData = NSKeyedArchiver.archivedDataWithRootObject(dicResults)

            let tempString = NSString(data: tempData, encoding: NSUTF8StringEncoding)
            let unArchDictionary : NSDictionary? = NSKeyedUnarchiver.unarchiveObjectWithData(tempData)! as? NSDictionary

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

它正在碰撞

让字典
。。。
请帮忙

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

JZ
考虑您自己的代码：

let dicResults : NSArray // dicResults is an array
// ... 
var tempData:NSData // tempData is an NSData
tempData = NSKeyedArchiver.archivedDataWithRootObject(dicResults)
// so tempData is an array archived into an NSData
// ...
let unArchDictionary : NSDictionary? =
    NSKeyedUnarchiver.unarchiveObjectWithData(tempData)! as? NSDictionary
// now you are unarchiving tempData as a dictionary?!

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

您希望如何将NSArray放入归档文件，然后从同一归档文件中获取NSDictionary？
好的，当我确认有人帮助过我时，我会重新检查记录。但我解决了自己的问题

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

如果您想将NSMutableDictionary保存到核心数据并检索它，这里是解决方案仅供参考，我正在使用可转换属性..保存到核心数据..../设置ManagedObjectContext

 let appDel : AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
    let context:NSManagedObjectContext = appDel.managedObjectContext

    let dict = NSEntityDescription.insertNewObjectForEntityForName("NoteDictionary", inManagedObjectContext: context)

let tempNote = self.noteField!.text as NSString
noteDictionary.setObject(tempNote, forKey: dicKey)

[dict .setValue(noteDictionary, forKey: "dictionary")]

// print("The Note Dictionary has this in it ",noteDictionary)

do {
    try context.save()
     print("The Note That Was Saved is ",dict)
} catch {
    print(error)
}

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

现在从核心数据中检索

func showLabel() {

let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context :NSManagedObjectContext = appDel.managedObjectContext
let noteDict = NSFetchRequest(entityName: "NoteDictionary")
noteDict.returnsObjectsAsFaults = false

let dicResults : NSArray
try! dicResults = context.executeFetchRequest(noteDict)

    for context in dicResults {
        noteDictionary = context.valueForKey("dictionary")as! NSMutableDictionary
        noteField?.text = noteDictionary.valueForKey(dicKey as String)as? String
    }
}

嗨，我以为这条线是在解开这个物体？拿出了那本书！仍然崩溃。让我们看看字典：NSDictionary？=NSKeyedUnarchiver.unarchiveObjectWithData（tempData）为？你没按我说的做！您取出了感叹号，但没有按照我告诉您的那样取出
：NSDictionary？
。这就是为什么你还在崩溃。看到我下面的答案。谢谢Matt，我确实看到了，并且解决了这个问题，还发布了一个不同的解决方案。你问了18个问题，但只有一次你接受了答案。这在堆栈溢出上是不好的行为。如果你不接受他们的答案，他们就不会愿意帮助你。如果你没有得到一个可接受的答案，你应该修改你的问题，使之更好。如果你得到了一个可接受的答案，你应该接受它（勾选）。+1另外，正在为类似问题寻找解决方案的人会看到答案不可接受的Q。