Ios 从archiveRootObject迁移到ArchiveData

我在下面有两个模型swift文件

// Item.swift

import UIKit

class Item: NSObject, NSCoding {
    var name: String
    var valueInDollars: Int
    var serialNumber: String?
    let dateCreated: Date
    let itemKey: String

    func encode(with aCoder: NSCoder) {
        aCoder.encode(name, forKey: "name")
        aCoder.encode(dateCreated, forKey: "dateCreated")
        aCoder.encode(itemKey, forKey: "itemKey")
        aCoder.encode(serialNumber, forKey: "serialNumber")

        aCoder.encode(valueInDollars, forKey: "valueInDollars")
    }

    required init(coder aDecoder: NSCoder) {
        name = aDecoder.decodeObject(forKey: "name") as! String
        dateCreated = aDecoder.decodeObject(forKey: "dateCreated") as! Date
        itemKey = aDecoder.decodeObject(forKey: "itemKey") as! String
        serialNumber = aDecoder.decodeObject(forKey: "serialNumber") as! String?

        valueInDollars = aDecoder.decodeInteger(forKey: "valueInDollars")

        super.init()
    }
}

这两个模型文件符合NSCoding协议，并使用archiveRootObject对数据进行归档

---

但是archiveRootObject已被弃用，而且NSCoding不如NSSecureCoding安全，我如何调整代码以调整所有这些？

您可以将您的

saveChanges

函数重写为以下内容：

    func saveChanges() -> Bool {
        print("Saving items to: \(itemArchiveURL.path)")
        do {
            let data = try NSKeyedArchiver.archivedData(withRootObject: allItems, requiringSecureCoding: false)
            try data.write(to: itemArchiveURL)
        }
        catch {
            print("Error archiving data: \(error)")
            return false
        }
        return true
    }

---

有了这组符合JSON或属性列表的属性，我们鼓励您使用更轻量级的

Codable

协议（它甚至可以序列化结构）。似乎一些持久数据只确认旧的NSCoding协议，所以我选择了平衡协议。

    func saveChanges() -> Bool {
        print("Saving items to: \(itemArchiveURL.path)")
        do {
            let data = try NSKeyedArchiver.archivedData(withRootObject: allItems, requiringSecureCoding: false)
            try data.write(to: itemArchiveURL)
        }
        catch {
            print("Error archiving data: \(error)")
            return false
        }
        return true
    }