Implementation Example

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    MySizeIdSDK.sharedInstance().initialize(withKey: "YOUR_KEY", andSecret: "YOUR_SECRET")
    return true
 }

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    
    @IBAction func start(_ sender:UIButton){
        if  MySizeIdSDK.sharedInstance().isDeviceSupported(){
            MySizeIdSDK.sharedInstance().start(self, andUserID: "USER_ID")
        }
    }
    
    
    @IBAction getSize(_ sender:UIButton){
        MySizeIdSDK.sharedInstance().getSize("SIZE_CHART", andUserID: "USER_ID", onComplete: { (size) in
            print(size)
        }) { (error) in
            print(error?.localizedDescription)
        }
    }
}