iOS/Swift - Push Notification - Retrieving and Saving Device Token at NSUserDefaults

gistfile1.txt

//
//  AppDelegate.swift
//  app
//
//  Created by Igor de Oliveira Sa on 25/02/15.
//  Copyright (c) 2015 Igor de Oliveira Sa. All rights reserved.
//

import UIKit
import CoreData

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    let defaults = NSUserDefaults.standardUserDefaults()

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        
        // PUSH NOTIFICATION
        let deviceToken = defaults.objectForKey(UserDefaultsContracts.KEY_DEVICE_TOKEN) as String?
        
        if (deviceToken == nil) {
            println("There is no deviceToken saved yet.")
            var types: UIUserNotificationType = UIUserNotificationType.Badge |
                UIUserNotificationType.Alert |
                UIUserNotificationType.Sound
            
            var settings: UIUserNotificationSettings = UIUserNotificationSettings( forTypes: types, categories: nil )
            
            application.registerUserNotificationSettings( settings )
            application.registerForRemoteNotifications()
        }
        
        return true
    }

    func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData!) {
        println("Got token data! (deviceToken)")
        var characterSet: NSCharacterSet = NSCharacterSet( charactersInString: "<>" )
        
        var deviceTokenString: String = ( deviceToken.description as NSString )
            .stringByTrimmingCharactersInSet( characterSet )
            .stringByReplacingOccurrencesOfString( " ", withString: "" ) as String
        
        println( deviceTokenString )
        
        defaults.setObject(deviceTokenString, forKey: UserDefaultsContracts.KEY_DEVICE_TOKEN)
    }
    
    func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError!) {
        println("Couldn’t register: (error)")
    }
}

let deviceToken = defaults.objectForKey(UserDefaultsContracts.KEY_DEVICE_TOKEN) as String?

    if (deviceToken == nil) {
        print("There is no deviceToken saved yet.")
        var types: UIUserNotificationType = UIUserNotificationType.Badge | UIUserNotificationType.Alert |
            UIUserNotificationType.Sound

Getting Error on above lines

You can do it like this:

 let deviceToken = defaults.objectForKey("DeviceToken") as! String?
        if (deviceToken == nil) {
            let type: UIUserNotificationType = [UIUserNotificationType.Badge, UIUserNotificationType.Alert, UIUserNotificationType.Sound]
            let setting = UIUserNotificationSettings(forTypes: type, categories: nil)
            UIApplication.sharedApplication().registerUserNotificationSettings(setting)
            UIApplication.sharedApplication().registerForRemoteNotifications()
        }