1 class func get_uuid() -> String{
 2     var userid = NSUserDefaults.standardUserDefaults().stringForKey("hangge")
 3     if(userid != nil){
 4         return userid!
 5     }else{
 6         var uuid_ref = CFUUIDCreate(nil)
 7         var uuid_string_ref = CFUUIDCreateString(nil , uuid_ref)
 8         var uuid:String = NSString(format: uuid_string_ref)
 9         NSUserDefaults.standardUserDefaults().setObject(uuid, forKey: "hangge")
10         return uuid
11     }
12 }

 1 var userDefault = NSUserDefaults.standardUserDefaults()
 2  
 3 //AnyObject
 4 userDefault.setObject("hangge.com", forKey: "Object")
 5 var objectValue:AnyObject? = userDefault.objectForKey("Object")
 6  
 7 //Int类型
 8 userDefault.setInteger(12345, forKey: "Int")
 9 var intValue = userDefault.integerForKey("Int")
10  
11 //Float类型
12 userDefault.setFloat(3.2, forKey: "Float")
13 var floatValue = userDefault.floatForKey("Float")
14  
15 //Double类型
16 userDefault.setDouble(5.2240, forKey: "Double")
17 var doubleValue = userDefault.doubleForKey("Double")
18  
19 //Bool类型
20 userDefault.setBool(true, forKey: "Bool")
21 var boolValue = userDefault.boolForKey("Bool")
22  
23 //NSURL类型
24 userDefault.setURL(NSURL(string:"http://hangge.com")!, forKey: "NSURL")
25 var urlValue = userDefault.URLForKey("NSURL")
26  
27 //NSString类型
28 userDefault.setObject("hangge.com", forKey: "NSString")
29 var nsStringValue = userDefault.objectForKey("NSString") as! NSString
30  
31 //NSNumber类型
32 var number:NSNumber = NSNumber(int:22)
33 userDefault.setObject(number, forKey: "NSNumber")
34 number = userDefault.objectForKey("NSNumber") as! NSNumber
35  
36 //NSArray类型
37 var array:NSArray = NSArray(array: ["123","456"])
38 userDefault.setObject(array, forKey: "NSArray")
39  
40 //NSDictionaryy类型
41 var dictionary:NSDictionary = NSDictionary(dictionary: ["1":"hangge.com"])
42 userDefault.setObject(dictionary, forKey: "NSDictionary")
43 dictionary = userDefault.objectForKey("NSDictionary") as! NSDictionary

 1 var userDefault = NSUserDefaults.standardUserDefaults()
 2  
 3 //UIImage对象存储
 4 //将对象转换成NSData流
 5 var image = UIImage(named: "apple.png")
 6 var imageData:NSData = NSKeyedArchiver.archivedDataWithRootObject(image!)
 7 //存储NSData对象
 8 userDefault.setObject(imageData, forKey: "imageData")
 9  
10 //UIImage对象读取
11 //获取NSData
12 var objData:NSData = userDefault.objectForKey("imageData") as! NSData
13 //还原对象
14 var myImage = NSKeyedUnarchiver.unarchiveObjectWithData(objData) as! UIImage
15 println(myImage)

 1 var userDefault = NSUserDefaults.standardUserDefaults()
 2  
 3 //自定义对象存储
 4 var model = UserInfo(name: "航歌", phone: "3525")
 5 //实例对象转换成NSData
 6 var modelData:NSData = NSKeyedArchiver.archivedDataWithRootObject(model)
 7 //存储NSData对象
 8 userDefault.setObject(modelData, forKey: "myModel")
 9  
10 //自定义对象读取
11 var myModelData = userDefault.objectForKey("myModel") as! NSData
12 var myModel = NSKeyedUnarchiver.unarchiveObjectWithData(myModelData) as! UserInfo