I am currently trying to save a custom Swift class to NSUserDefaults. Here is the code from my Playground:
import Foundation
class Blog : NSObject, NSCoding {
var blogName: String?
override init() {}
required init(coder aDecoder: NSCoder) {
if let blogName = aDecoder.decodeObjectForKey("blogName") as? String {
self.blogName = blogName
}
}
func encodeWithCoder(aCoder: NSCoder) {
if let blogName = self.blogName {
aCoder.encodeObject(blogName, forKey: "blogName")
}
}
}
var blog = Blog()
blog.blogName = "My Blog"
let ud = NSUserDefaults.standardUserDefaults()
ud.setObject(blog, forKey: "blog")
When I run the code, I get the following error
Execution was interrupted, reason: signal SIGABRT.
in the last line (ud.setObject...)
The same code also crashes when in an app with the message
"Property list invalid for format: 200 (property lists cannot contain objects of type 'CFType')"
Can anybody help? I am using Xcode 6.0.1 on Maverick. Thanks.
As @dan-beaulieu suggested I answer my own question:
Here is the working code now:
Note: Demangling of the class name was not necessary for the code to work in Playgrounds.
import Foundation
class Blog : NSObject, NSCoding {
var blogName: String?
override init() {}
required init(coder aDecoder: NSCoder) {
if let blogName = aDecoder.decodeObjectForKey("blogName") as? String {
self.blogName = blogName
}
}
func encodeWithCoder(aCoder: NSCoder) {
if let blogName = self.blogName {
aCoder.encodeObject(blogName, forKey: "blogName")
}
}
}
let ud = NSUserDefaults.standardUserDefaults()
var blog = Blog()
blog.blogName = "My Blog"
ud.setObject(NSKeyedArchiver.archivedDataWithRootObject(blog), forKey: "blog")
if let data = ud.objectForKey("blog") as? NSData {
let unarc = NSKeyedUnarchiver(forReadingWithData: data)
let newBlog = unarc.decodeObjectForKey("root") as Blog
}
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