Implementation Example

import UIKit 

@UIApplicationMain 

class AppDelegate: UIResponder, UIApplicationDelegate { 

var window: UIWindow? 

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { 
MySizeIDEngine.sharedInstance().initalize(withKey: <your key>, andSecret: <your secret>) 
        return true 
    } 
} 

import UIKit  

class ViewController: UIViewController { 

 override func viewDidLoad() { 
        super.viewDidLoad()      MySizeIDEngine.sharedInstance().startSession(self) 
    } 

    override func viewDidDisappear(_ animated: Bool) { 
        super.viewDidDisappear(animated)        MySizeIDEngine.sharedInstance().stopSession()
    } 
     
    @IBAction func start(_ sender:UIButton){ 
        MySizeIDEngine.sharedInstance().startMeasure(TYPE_CB, andIsMale: true, andUserID: "123", andHeight: 170, andWeight: 80) 
    } 

    @IBAction func getSize(_ sender:UIButton){ 
        MySizeIDEngine.sharedInstance().getSize ("SIZE_CHART_CODE", andUserID: "USER_ID", onComplete: { (size) in 
            print(size) 
        }) { (error) in 
            print(error.localizedDescription) 
        } 
    } 

    @IBAction func resetMeasruments(_ sender:UIButton!){ 
      MySizeIDEngine.sharedInstance().resetMeasruments("USER_ID", andIsMale: true, andHeight: 170, andWeight: 90, onComplete: {
            print("Successfully reset all measurements") 
        }) { (error) in 
            print(error.localizedDescription) 
        } 
    } 
} 

extension ViewController:MeasureListenerBodyEngine{ 
    func didFinishMeasureWithError(_ error: NSNumber!) { 
        DispatchQueue.main.async { 
            if error != 0{ 
                print(error!) 
            } 
        } 
    } 
}