ios - NSKeyedUnarchiver error after renaming Xcode project

Question

I just renamed my Xcode project and when I ran it I got this error:

2015-11-14 05:32:42.337 Buck Tracker[3537:1456100] * Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: '* -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (iBudgeter.Record) for key (NS.objects); the class may be defined in source code or a library that is not linked'

The Buck Tracker is the new name and iBudgeter is the original name. Record is a custom NSObject I created to store some data.

I tried renaming the project back to iBudgeter but it didn't work. Reverting to a previous version in git did help but I got the same error when I renamed it again.

So any suggestions?

Answer 1

another way is to fix the name of the class used for NSCoding. You simply have to use:

• NSKeyedArchiver.setClassName("Record", forClass: Record.self before serializing
• NSKeyedUnarchiver.setClass(Record.self, forClassName: "Record") before deserializing

wherever needed.

Looks like iOS?extensions prefix the class name with the extension's name.