相关疑难解决方法(0)

自从升级到Swift 4.2以来,我发现许多NSKeyedUnarchiver和NSKeyedArchiver方法已被弃用,我们现在必须使用type方法static func unarchivedObject<DecodedObjectType>(ofClass: DecodedObjectType.Type, from: Data) -> DecodedObjectType?来取消归档数据.

我成功地存档了我的定制类WidgetData的数组,这是一个NSObject子类:

private static func archiveWidgetDataArray(widgetDataArray : [WidgetData]) -> NSData {

    guard let data = try? NSKeyedArchiver.archivedData(withRootObject: widgetDataArray as Array, requiringSecureCoding: false) as NSData
        else { fatalError("Can't encode data") }

    return data

}

当我尝试取消归档此数据时出现问题:

static func loadWidgetDataArray() -> [WidgetData]? {

    if isKeyPresentInUserDefaults(key: USER_DEFAULTS_KEY_WIDGET_DATA) {

        if let unarchivedObject = UserDefaults.standard.object(forKey: USER_DEFAULTS_KEY_WIDGET_DATA) as? Data {

            //THIS FUNCTION HAS NOW BEEN DEPRECATED:
            //return NSKeyedUnarchiver.unarchiveObject(with: unarchivedObject as Data) as? [WidgetData]

            guard let nsArray = …