NSSecureCoding trouble with collections of custom class

Question

I am having trouble with adopting NSSecureCoding. I encode an array containing objects of my custom class, which adopts NSSecureCoding properly. When I decode i

Answer 1

You've probably already solved this, but I just hit this and found a solution, and thought I'd leave it here for anyone else that finds this.

My solution was to use decodeObjectOfClasses:forKey:

In swift:

    if let data = defaults.objectForKey(FinderSyncKey) as? NSData
        let unArchiver = NSKeyedUnarchiver(forReadingWithData: data)
        unArchiver.setRequiresSecureCoding(true)
         //This line is most likely not needed, I was decoding the same object across modules
        unArchiver.setClass(CustomClass.classForCoder(), forClassName: "parentModule.CustomClass")
        let allowedClasses = NSSet(objects: NSArray.classForCoder(),CustomClass.classForCoder())
        if let unarchived = unArchiver.decodeObjectOfClasses(allowedClasses, forKey:NSKeyedArchiveRootObjectKey) as?  [CustomClass]{
            return unarchived

        }    
    }

in objective-C it would be something like [unArchiver decodeObjectOfClasses:allowedClasses forKey:NSKeyedArchiveRootObjectKey]

The change in decode object to decode objects solved the above exception for me.