How to deal with deprecated function 'unarchiveObject(with:)'?

Question

Try to implement KeychainWrapper from here: https://github.com/jrendel/SwiftKeychainWrapper It is functioning well but in one piece of code I get mistake: "'unarchiveObject(with:)' was deprecated in iOS 12.0: Use +unarchivedObjectOfClass:fromData:error: instead"

I tried to follow the discussion which seems to be similar but wasn't successful.

The piece of code is here:

open func object(forKey key: String, withAccessibility accessibility: KeychainItemAccessibility? = nil) -> NSCoding? {
    guard let keychainData = data(forKey: key, withAccessibility: accessibility) else {
        return nil
    }

    return NSKeyedUnarchiver.unarchiveObject(with: keychainData) as? NSCoding

How to NSKeyedUnarchiver.unarchiveObject

Here is the updated version:

open func object(forKey key: String, withAccessibility accessibility: KeychainItemAccessibility? = nil) -> NSCoding? {
guard let keychainData = data(forKey: key, withAccessibility: accessibility) else {
    return nil
}

let result = try! NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(keychainData) as? NSCoding

return result

Please refer this https://stackoverflow.com/a/59170370/6920041 — Himanshu Patel, Dec 30 '19 at 05:07

score 4 · Accepted Answer · answered Dec 30 '19 at 06:02

You can do this in following way...

let result = jsonDict["result"] as? NSDictionary ?? [:]
let data = try! NSKeyedArchiver.archivedData(withRootObject: result, requiringSecureCoding: false)
UserDefaults.standard.set(data, forKey: "currentUser")

// Get data from Userdefault

let result = UserDefaults.standard.data(forKey: "currentUser")
    if result != nil{
    let dict = try! NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(result!) as? NSDictionary ?? [:]
    print("Current User Details : - \(dict)")
}

unarchiveTopLevelObjectWithData soon will be deprecated too, but it still works in Xcode14 + iOS16 with no warnings! — Dmytro Yashchenko, Sep 20 '22 at 12:38

score 2 · Answer 2 · answered Dec 30 '19 at 05:17

2

Thanks for the hint Himanshu Patel It worked for me. Here is the updated code:

open func object(forKey key: String, withAccessibility accessibility: KeychainItemAccessibility? = nil) -> NSCoding? {
    guard let keychainData = data(forKey: key, withAccessibility: accessibility) else {
        return nil
    }

    let result = try! NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(keychainData) as? NSCoding

    return result

answered Dec 30 '19 at 05:17

Roman

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welcome bro please upvote my answer. – Himanshu Patel Dec 30 '19 at 05:44
Himanshu Patel I can't upvote your comment. Please write a short answer and I would be happy to upvote it. – Roman Dec 30 '19 at 05:54
this is my answer https://stackoverflow.com/a/59170370/6920041 – Himanshu Patel Dec 30 '19 at 05:56
Yes, but you posted it not by me :) I can upvote only answers to my questions. :) – Roman Dec 30 '19 at 05:58

How to deal with deprecated function 'unarchiveObject(with:)'?

2 Answers2