Example of a previous manager class I've made

managerExample.swift

//
//  HandleUserDefaults.swift
//  Student
//
//  Created by Alex Persian on 6/9/15.
//  Copyright (c) 2015 Geo-Comm Inc. All rights reserved.
//

import Foundation

class UserDefaultsManager {
    
    class var standardUserDefaults: NSUserDefaults {
        return NSUserDefaults.standardUserDefaults()
    }

// MARK: User login credentials
    class func setUserDefaults(name: String, starId: String) {
        standardUserDefaults.setObject(name, forKey: "nameKey")
        standardUserDefaults.setObject(starId, forKey: "starIdKey")
    }
    class func getUserDefaultsName() -> String {
        if let name = standardUserDefaults.stringForKey("nameKey") {
            return name
        } else {
            return "USER DEFAULTS: No name available"
        }
    }

// MARK: User Star ID
    class func setUserDefaultsStarId(starId: String) {
        standardUserDefaults.setObject(starId, forKey: "starIdKey")
    }
    class func getUserDefaultsStarId() -> String {
        if let name = standardUserDefaults.stringForKey("starIdKey") {
            return name
        } else {
            return "USER DEFAULTS: No Star ID available"
        }
    }

// MARK: Authentication
    class func setAuthenticateUser() {
        standardUserDefaults.setBool(true, forKey: "authenticated")
    }
    class func getWelcomeScreenSeen() -> Bool {
        let authenticated = standardUserDefaults.boolForKey("authenticated")
        return authenticated
    }

// MARK: Device tokens
    class func getDeviceToken() -> String {
        if let token = standardUserDefaults.stringForKey("apnsToken") {
            return token
        } else {
            return "USER DEFAULTS: No token available"
        }
    }

// MARK: Clearing all defaults
    class func clearUserDefaults() {
        for key in standardUserDefaults.dictionaryRepresentation().keys {
            standardUserDefaults.removeObjectForKey(key.description)
        }
    }
}