获得;不实现methodSignatureForSelector“;当尝试在NSUserDefaults中存储数组时,Swift?
我尝试将对象数组存储在获得;不实现methodSignatureForSelector“;当尝试在NSUserDefaults中存储数组时,Swift?,swift,Swift,我尝试将对象数组存储在NSUserDefaults中 我有以下代码片段: var accounts = MyAccounts() var array:Array<MyAccounts.MyCalendar> = accounts.populateFromCalendars() NSUserDefaults.standardUserDefaults(). setObject(array, forKey: "test_storeAccoun
NSUserDefaults
中
我有以下代码片段:
var accounts = MyAccounts()
var array:Array<MyAccounts.MyCalendar> = accounts.populateFromCalendars()
NSUserDefaults.standardUserDefaults().
setObject(array, forKey: "test_storeAccounts_array") // <- get error here
NSUserDefaults.standardUserDefaults().synchronize()
我的班级结构:
class MyAccounts {
/* ... */
class MyCalendar {
var title:String?
var identifier:String?
var email:String?
var calType:String?
var isActive:Bool?
var isMainAcount:Bool?
init(){}
}
}
有什么想法吗?您需要先将类转换为
NSData
。大概是这样的:
var data = NSKeyedArchiver.archivedDataWithRootObject(accounts.populateFromCalendars())
var userDefaults = NSUserDefaults.standardUserDefaults();
userDefaults.setObject(data, forKey: "test_storeAccounts_array");
确保您的类继承自NSObject
class MyAccounts:NSObject {
/* ... */
class MyCalendar {
var title:String?
var identifier:String?
var email:String?
var calType:String?
var isActive:Bool?
var isMainAcount:Bool?
init(){}
}
}
在Swift 2中,我在自定义类中使用通知模式时遇到了类似的错误。请注意,当在ViewController类中实现相同的通知(观察)时,它不会抱怨。它只使用自定义类,该类是从Swift文件创建的,没有子类化该错误被抛出
class myClass : NSObject {
override init(){
super.init()
NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("functionCall:"), name: "NotificationName", object: nil)
}
//Implement function
func functionCall(notification: NSNotification) {
//Extract the object and implement the function
}
}
我在Swift 3.0中遇到了这个异常。在我的例子中,我的模型类不是从NSObject基类继承的。只需从NSObject基类继承my类并实现NSCoding协议(如果容器数组具有自定义对象)
如果数组的类型为
NSMutableArray
,则它将起作用。我有自定义的数组
。得到同样的错误。顺便说一句,我从评论中读到了你的答案对不起,我删除了评论,因为我后来意识到它是为一个不同的问题写的。
class myClass : NSObject {
override init(){
super.init()
NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("functionCall:"), name: "NotificationName", object: nil)
}
//Implement function
func functionCall(notification: NSNotification) {
//Extract the object and implement the function
}
}
class Stock: NSObject, NSCoding {
var stockName: String?
override init() {
}
//MARK: NSCoding protocol methods
func encode(with aCoder: NSCoder){
aCoder.encode(self.stockName, forKey: "name")
}
required init(coder decoder: NSCoder) {
if let name = decoder.decodeObject(forKey: "name") as? String{
self.stockName = name
}
}
func getStockDataFromDict(stockDict stockDict:[String:AnyObject]) -> Stock {
if let stockName = stockDict["name"] {
self.stockName = stockName as? String
}
return self
}
}