ios - NSKeyedUnarchiver.unarchiveObject无法正常工作

This question already has an answer here:

UIImage(contentsOfFile:) returning nil despite file existing in caches directory [duplicate]
（1个答案）
两年前关闭。
调用了NSKeyedArchiver.archiveRootObject，但getter将变量“a”返回为nil。我很烦。
有人看到这里有什么问题吗？

let url = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!.appendingPathComponent("Information.ab")

var info: Information? {
        get {
            let a = NSKeyedUnarchiver.unarchiveObject(withFile: url.absoluteString) as? Information
            return a
        }
        set {
            if info != newValue && newValue != nil {
                NSKeyedArchiver.archiveRootObject(newValue as Any, toFile: url.absoluteString)
            }
        }
    }

class Information: RecordModel {

    let rules: CKAsset
    let aboutUs: String
    let terms: String
    let privacyPolicy: String

    override init(record: CKRecord) {
        rules = record["rules"] as! CKAsset
        aboutUs = record["aboutUs"] as! String
        terms = record["terms"] as! String
        privacyPolicy = record["privacyPolicy"] as! String
        super.init(record: record)
    }

}

class RecordModel: NSObject, NSCoding {

    let record: CKRecord

    init(record: CKRecord) {
        self.record = record
    }

    required convenience init?(coder aDecoder: NSCoder) {
        let record = aDecoder.decodeObject(forKey: "keyRecord") as! CKRecord
        self.init(record: record)
    }

    func encode(with aCoder: NSCoder) {
        aCoder.encode(record, forKey: "keyRecord")
    }

    override func isEqual(_ object: Any?) -> Bool {
        if let rhs = object as? Information {
            return record.recordID == rhs.record.recordID
        }
        return false
    }

    override var hash: Int {
        return record.recordID.hashValue
    }

}

最佳答案

unarchiveObject(withFile和archiveRootObject(_:toFile都希望文件路径没有file://方案，因此在这两种情况下

url.path

而不是url.absoluteString

关于ios - NSKeyedUnarchiver.unarchiveObject无法正常工作，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42608366/