Slide 19
Slide 19 text
import Foundation
extension Data {
func toHexString() -> String {
return self.reduce("", {$0 + String(format: "%02.2hhx", $1)})
}
}
@objc
public class DeviceTokenManager: NSObject {
private static let key:String = "knocker.device.token"
static let defaults = UserDefaults.standard
public static func store(_ deviceToken: Data) {
defaults.set(deviceToken.toHexString(), forKey: key)
defaults.synchronize()
}
public static func retrieve() -> String? {
return defaults.object(forKey: key) as? String
}
public static func clear() {
defaults.removeObject(forKey: key)
}
}
19/51