Question

我试图通过添加一个对象数组而不仅仅是一个对象来写入NSUserDefaults。

但是，我收到此错误

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Attempt to insert non-property list object (
"MyNotificaiton",
"MyNotificaiton"
) for key pushArray'

我很确定这意味着我尝试插入的数组不是正确的类型，但我不知道我需要用它来修复它。

这是我到目前为止所拥有的

class PushNotificationController: UIViewController {


let arrayKey : String = "pushArray"


var defualtUrl : String = ""
var defualtMessage : String = ""
var defualtTitle : String = ""
var defualtCoupon : String = ""
var storedUrl : String = ""
var storedMessage : String = ""
var storedTitle : String = ""
var storedCoupon : String = ""

var urlVar : String = ""
var messageVar : String = ""
var titleVar : String = ""
var couponVar : String = ""


var myNote : MyNotificaiton?

let loginInformation = NSUserDefaults.standardUserDefaults()
let noteificationDefaults = NSUserDefaults.standardUserDefaults()

var recivedNotification = [MyNotificaiton]()

@IBOutlet weak var titleLable: UILabel!
@IBOutlet weak var messageLable: UILabel!
@IBOutlet weak var urlLable: UILabel!
@IBOutlet weak var couponLable: UILabel!


override func viewDidLoad() {
    super.viewDidLoad()
    //add observer for load request in webview when receive remote notification.
    NSNotificationCenter.defaultCenter().addObserver(self, selector:#selector(PushNotificationController.PushReceiver(_:)), name: "PushReceived", object: nil)

    var isThereAMessage : Bool = false

    //create an array
    //Fill it with the userdefulat data
    //Check to see if there is any writen data
    //othere wise just move along
    if noteificationDefaults.objectForKey(arrayKey) != nil
    {
        recivedNotification = loadPushArray()
        print("Loading push Array")
        print(recivedNotification.count)
    }


    //Get the Url from the push notification
    if loginInformation.objectForKey("URL") != nil
    {
        storedUrl = loginInformation.objectForKey("URL") as! String
        if storedUrl.isEmpty
        {urlLable.text = "Url is Empty"
        }else{
             urlLable.text = storedUrl
             urlVar = storedUrl
        }
    }else
    {urlLable.text  = "Url is Empty"}
    //Display the Push notification

    //Set the message variable
    if loginInformation.objectForKey("Message") != nil
    {
        storedMessage = loginInformation.objectForKey("Message") as! String

        if storedMessage.isEmpty
        {messageLable.text  = "Message is Empty"
        }
        else{
            messageLable.text = storedMessage
            messageVar = storedMessage
            isThereAMessage = true
        }
    }else{messageLable.text = "Message is Empty"}

    //Set the Title variable
    if loginInformation.objectForKey("Title") != nil
    {
        storedTitle = loginInformation.objectForKey("Title") as! String

        if storedTitle.isEmpty
        {titleLable.text = "Title is Empty"}
        else{
            titleLable.text = storedTitle
            titleVar = storedTitle
        }
    }else{titleLable.text = "Title is Empty"}

    //Set the Title variable
    if loginInformation.objectForKey("Coupon") != nil
    {
        storedCoupon = loginInformation.objectForKey("Coupon") as! String

        if storedCoupon.isEmpty
        {couponLable.text = "Coupon is Empty"
        }else{
            couponLable.text = storedCoupon
            couponVar = storedCoupon
        }
    }else
    {couponLable.text = "Title is Empty"}

    //Saved the recived data to the push notifcation items

    print("Check to see if I recived a message : ")
    print(isThereAMessage)


    //Test to see if there was a push notificaiton sent
    if(isThereAMessage)
    {
        //if there was then create a new object with the data recived
        myNote = MyNotificaiton(pUrl: urlVar,pMessage: messageVar,pTitle: titleVar,pCoupon: couponVar)
        recivedNotification.insert(myNote!, atIndex: 0)
        recivedNotification.insert(recivedNotification[0], atIndex: 1)

        print("Added item to Recived Note Array")
        printPushObject(myNote!)
        print(recivedNotification.count)
        print("Printing the Array")
        printPushObject(recivedNotification[0])
        print("Printed the Array")
        //Save the array now
        savePushArray(recivedNotification)
    }

}

func clearLoginInfo()
{
    //set everything back to empty so it can recive new notification
    loginInformation.setObject(defualtUrl, forKey: "URL")
    loginInformation.setObject(defualtMessage, forKey: "Message")
    loginInformation.setObject(defualtTitle, forKey: "Title")
    loginInformation.setObject(defualtCoupon, forKey: "Coupon")
    self.loginInformation.synchronize()
}


//Save the Modified Arrays
func savePushArray(myArray : [MyNotificaiton])
{
    noteificationDefaults.setObject(myArray, forKey: arrayKey)
    noteificationDefaults.synchronize()
}
//Load the array
func loadPushArray() -> [MyNotificaiton]
{
    let array : [MyNotificaiton] = noteificationDefaults.objectForKey(arrayKey) as! [MyNotificaiton]
    return array
}

//When post notification then below method is called.
func PushReceiver(notifi: NSNotification)
{
    print("Pushed Recieved")
    //let dicNotifi: [NSObject : AnyObject] = notifi.userInfo!
    //NSLog("notificiation Info %@ \n", dicNotifi)
}

//Printing of an object
//This is a tail of Cpt Jack Sparrow
func printPushObject(myObject : MyNotificaiton)
{
    print(myObject.title)
    print(myObject.message)
    print(myObject.url)
    print(myObject.coupon)
}

//Build the object

//MARK: MYNotification class
class MyNotificaiton
{
    var url : String?
    var message : String?
    var title : String?
    var coupon : String?

    init(pUrl : String, pMessage : String, pTitle : String, pCoupon : String)
    {
        url = pUrl
        message = pMessage
        title = pTitle
        coupon = pCoupon
    }
    //Save and load data from NSUserDefaults
    init(coder aDecoder : NSCoder!)
    {
        self.url = aDecoder.decodeObjectForKey("thisUrl") as? String
        self.message = aDecoder.decodeObjectForKey("thisMessage") as? String
        self.title = aDecoder.decodeObjectForKey("thisTitle") as? String
        self.coupon = aDecoder.decodeObjectForKey("thisCoupon") as? String
    }

    func initWithCoder(aDecoder : NSCoder) -> MyNotificaiton
    {
        self.url = aDecoder.decodeObjectForKey("thisUrl") as? String
        self.message = aDecoder.decodeObjectForKey("thisMessage") as? String
        self.title = aDecoder.decodeObjectForKey("thisTitle") as? String
        self.coupon = aDecoder.decodeObjectForKey("thisCoupon") as? String

        return self
    }

    func encodeWithCoder(aCoder : NSCoder!)
    {
        aCoder.encodeObject(url, forKey: "thisUrl")
        aCoder.encodeObject(message, forKey: "thisMessage")
        aCoder.encodeObject(title, forKey: "thisTitle")
        aCoder.encodeObject(coupon, forKey: "thisCoupon")
    }

}

Answer 1

你无法以你想要的方式保存数组，而是这样做：

let arr = ["1", "2", "3"]

let dataSave = NSKeyedArchiver.archivedDataWithRootObject(arr)
NSUserDefaults.standardUserDefaults().setObject(dataSave, forKey: "array")
NSUserDefaults.standardUserDefaults().synchronize()


let data = NSUserDefaults.standardUserDefaults().objectForKey("array")
let savedArray = NSKeyedUnarchiver.unarchiveObjectWithData(data! as! NSData)

print(savedArray!)

将打印出来：

我无法在swift中向NSUserDefaults写一个数组

1 个答案: