Signal SIGABRT in Swift using NSuserdefaults - xcode

Question

I'm building a swift game and a need to set up a class. My code works for all the elements in my class, but not for this.
func saveInformationMember(){
var MembersDefaultName = NSUserDefaults.standardUserDefaults()
MembersDefaultName.setValue(globalCurrentMembers, forKey: "globalCurrentMembersData")
MembersDefaultName.synchronize()
}
GlobalCurrentMembers is an array of Member which looks like that:
class Member {
var image = String ()
var name = String ()
var progression = Int()
var round = Int()
var level = Int()
var imageProgression = [UIButton]()
func Init(){
image = "default.png"
name = "default"
progression = 0
round = 0
level = 0
}

Answer 1

To save your class this way, Member needs to conform to the NSCoding protocol.

Answer 2

Thx to Aaron Brager for is response. This is the response :
func saveInformationMember(){
let data = NSKeyedArchiver.archivedDataWithRootObject(globalCurrentMembers)
NSUserDefaults.standardUserDefaults().setObject(data, forKey: "member")}
func loadInformationMember(){
if let data = NSUserDefaults.standardUserDefaults().objectForKey("member") as? NSData {
globalCurrentMembers = NSKeyedUnarchiver.unarchiveObjectWithData(data) as [Member]
}
And my class:
class Member : NSObject, NSCoding {
var image = String ()
var name = String ()
var progression = Int()
var round = Int()
var level = Int()
var imageProgression = [UIButton]()
func initiation(){
image = "default.png"
name = "default"
progression = 0
round = 0
level = 0
}
required convenience init(coder decoder: NSCoder) {
self.init()
self.image = decoder.decodeObjectForKey("image") as String!
self.name = decoder.decodeObjectForKey("name") as String!
self.progression = decoder.decodeIntegerForKey("progression") as Int!
self.round = decoder.decodeIntegerForKey("round") as Int!
self.level = decoder.decodeIntegerForKey("level") as Int!
}
func encodeWithCoder(coder: NSCoder) {
coder.encodeObject(self.image, forKey: "image")
coder.encodeObject(self.name, forKey: "name")
coder.encodeInt(Int32(self.progression), forKey: "progression")
coder.encodeInt(Int32(self.round), forKey: "round")
coder.encodeInt(Int32(self.level), forKey: "level")
}}