如何使用靜態自實例在UserDefaults中保存模型類？

我有一個模型類User，我想在UserDefaults如何使用靜態自實例在UserDefaults中保存模型類？

import UIKit 

class User: NSObject { 

    var name:String! 
    var email:String! 
    var userId:String! 
    var phone:String! 
    var admin_status:String! 
    var social_code:String! 
    var token:String! 
    var otp:String! 
    var forget_otp:String! 
    var p_img:String! 
    var created:String! 
    var status:String! 

    static var currentUser:User = User() 

    override init() { 
     super.init() 
    } 

    required init(coder aDecoder: NSCoder) { 
     self.name = aDecoder.decodeObject(forKey: "name") as! String 
     self.email = aDecoder.decodeObject(forKey: "email") as! String 
     self.userId = aDecoder.decodeObject(forKey: "userId") as! String 
     self.phone = aDecoder.decodeObject(forKey: "phone") as! String 
     self.admin_status = aDecoder.decodeObject(forKey: "admin_status") as! String 
     self.social_code = aDecoder.decodeObject(forKey: "social_code") as! String 
     self.token = aDecoder.decodeObject(forKey: "token") as! String 
     self.otp = aDecoder.decodeObject(forKey: "otp") as! String 
     self.forget_otp = aDecoder.decodeObject(forKey: "forget_otp") as! String 
     self.p_img = aDecoder.decodeObject(forKey: "p_img") as! String 
     self.created = aDecoder.decodeObject(forKey: "created") as! String 
     self.status = aDecoder.decodeObject(forKey: "status") as! String 
    } 

    func encodeWithCoder(aCoder: NSCoder) { 
     aCoder.encode(name, forKey: "name") 
     aCoder.encode(email, forKey: "email") 
     aCoder.encode(userId, forKey: "userId") 
     aCoder.encode(phone, forKey: "phone") 
     aCoder.encode(admin_status, forKey: "admin_status") 
     aCoder.encode(social_code, forKey: "social_code") 
     aCoder.encode(token, forKey: "token") 
     aCoder.encode(otp, forKey: "otp") 
     aCoder.encode(forget_otp, forKey: "forget_otp") 
     aCoder.encode(p_img, forKey: "p_img") 
     aCoder.encode(created, forKey: "created") 
     aCoder.encode(status, forKey: "status") 
    } 

}

代碼來保存，保存，並從UserDefaults

class func setUserDefault(ObjectToSave : AnyObject? , KeyToSave : String) 
    { 
     let defaults = UserDefaults.standard 

     if (ObjectToSave != nil) 
     { 

      defaults.set(ObjectToSave, forKey: KeyToSave) 
     } 

     UserDefaults.standard.synchronize() 
    } 

    class func getUserDefault(KeyToReturnValye : String) -> AnyObject? 
    { 
     let defaults = UserDefaults.standard 

     if let name = defaults.value(forKey: KeyToReturnValye) 
     { 
      return name as AnyObject 
     } 
     return nil 
    }

保存

let user:User = User() 
        user.name = json["data"]["first_name"].string 
        user.email = json["data"]["email"].string 
        user.phone = json["data"]["phone"].string 
        user.social_code = json["data"]["social_code"].string 
        user.admin_status = json["data"]["admin_status"].string 
        user.otp = json["data"]["otp"].string 
        user.forget_otp = json["data"]["forget_otp"].string 
        user.p_img = json["data"]["p_img"].string 
        user.status = json["data"]["status"].string 
        user.userId = json["data"]["id"].string 
        user.created = json["data"]["created"].string 

        Utilities.setUserDefault(ObjectToSave: user, KeyToSave: "user")

我也試過這個

let encodedData = NSKeyedArchiver.archivedData(withRootObject: user) 
        UserDefaults.standard.set(encodedData, forKey: "User")

但它因爲static var currentUser:User = User()而崩潰

如何解決這個問題？

來源

2017-05-30 Varun Naharia

您到目前爲止嘗試過什麼。你嘗試NSCoding –

我寫的代碼，我正在使用，但我不知道該怎麼辦'static var currentUser：User = User（）' –

嘗試[this answer]（https://stackoverflow.com/questions/43271947 /如何可以存儲自定義對象在nsuserdefaults） –

至於NSCoding：你有錯誤的方法簽名。更改

func encodeWithCoder(aCoder: NSCoder)

到

func encode(with aCoder: NSCoder)

而且，你的對象應明確符合NSCoding協議：

class User: NSObject, NSCoding {...}

至於UserDefaults，你不能存儲自定義在UserDefaults對象，只NSData，NSString,NSNumber,NSDate，NSArray或NSDictionary（或Swift中的類似類型），請參閱documentation

來源

2017-05-30 06:02:55

有你在更換您此行嘗試，

static var currentUser:User = User()

這一行，

static var currentUser:User!

來源

2017-05-30 06:02:28

如何使用靜態自實例在UserDefaults中保存模型類？

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