使用 NSKeyedUnarchiver 解码 NSArchiver

Question

I have some old archives that are basically stored preferences created with NSArchiver. I want to be able to decode them with NSKeyedUnarchiver since the NSArchiver/NSUnarchiver are deprecated in favor of their keyed counterparts.

Is there any way to make this work?

Answer 1

You cannot decode an NSArchiver archive with NSKeyedUnarchiver. The NSArchiver format is deprecated, not just the classes. If you have data in the old format, you may have to use a deprecated class to decode it. The point is that you would then re-encode the data using NSKeyedArchiver (or one of the other options like Codable in Swift) and store it in a modern format.