혹시 강의하실때 사용하셨던 Xcode 버전을 알 수 있을까요?

Question

모두 똑같이 적었는데 오류가 많이 납니다 ㅠㅠ 저는 10.2.1 사용합니다.

박단비 · Answer

어떻게 고쳐야 Run했을때 정상적으로 작동 될까요...?

박단비 · Answer

몇가지는 fix 눌러서 고쳐서 조금 수정되었을거에요. 지금 에러가 8개 납니다 ㅠㅠ

박단비 · Answer

앱딜리게이트 // //   AppDelegate.swift //   MyWebBrowser // //   Created by 박단비 on 15/05/2019. //   Copyright &copy; 2019 박단비. All rights reserved. //   import UIKit /// 마지막 페이지 주소를 UserDefaults에서 관리하기 위한 키 값 let lastPageURLDefaultKey: String = "lastURL"     @UIApplicationMain class AppDelegate: UIResponder , UIApplicationDelegate {     // MARK: - Properties     var window: UIWindow ?     var lastPageURL: URL ?       // MARK: - Methods     func application( _ application: UIApplication , didFinishLaunchingWithOptions launchOptions: [ UIApplication . LaunchOptionsKey : Any ]?) -> Bool {         // Override point for customization after application launch.         self . lastPageURL = UserDefaults . standard . url (forKey: lastPageURLDefaultKey )         return true     }       func applicationWillResignActive( _ application: UIApplication ) {                  let userDefaults: UserDefaults         userDefaults = UserDefaults . standard                  UserDefaults .set( self .lastPageURL, forKey: lastPageURLDefaultKey )         userDefaults. synchronize ()     }       func applicationDidEnterBackground( _ application: UIApplication ) {              }       func applicationWillEnterForeground( _ application: UIApplication ) {         // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.     }       func applicationDidBecomeActive( _ application: UIApplication ) {         // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.     }       func applicationWillTerminate( _ application: UIApplication ) {         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.     }     }

박단비 · Answer

뷰 컨트롤러 // //   ViewController.swift //   MyWebBrowser // //   Created by 박단비 on 15/05/2019. //   Copyright &copy; 2019 박단비. All rights reserved. //   import UIKit import WebKit   class ViewController: UIViewController {       //MARK: - Properties     //MARK: IBOutlets     @IBOutlet var webView: WKWebView !     @IBOutlet var activityIndicator: UIActivityIndicatorView !          //MARK: - Methods     //MARK: Life Cycle     override func viewDidLoad() {         super . viewDidLoad ()         // Do any additional setup after loading the view.         self . webView . navigationDelegate = self as ? WKNavigationDelegate     }          override func viewDidAppear( _ animated: Bool ) {         super . viewDidAppear (animated)                  let firstPageURL: URL ?                  if let lastURL: URL = UserDefaults . standard . url (forKey: lastPageURLDefaultKey ) {             firstPageURL = lastURL         } else {             firstPageURL = URL (string: "https://www.google.com" )         }         guard let pageURL: URL = firstPageURL else {             return         }                  let urlRequest: URLRequest = URLRequest (url: pageURL)         self . webView . load (urlRequest) }           // MARK: IBActions         @IBAction func goBack( _ sender: UIBarButtonItem ) {             self . webView . goBack ()         }         @IBAction func goForward( _ sender: UIBarButtonItem ) {             self . webView . goForward ()         }         @IBAction func refresh( _ sender: UIBarButtonItem ) {             self . webView . reload ()               //MARK: Custom Methods             func showNetworkingIndicators() {                 self . activityIndicator . isHidden = false                 self . activityIndicator . startAnimating ()                 UIApplication . shared . isNetworkActivityIndicatorVisible = true                              func hideNetworkingIndicators() {                 self . activityIndicator . isHidden = true                 self . activityIndicator . stopAnimating ()                 UIApplication . shared . isNetworkActivityIndicatorVisible = false         } }          extension ViewController : WKNavigationDelegate {          // MARK : WKNavigationDelegate     func webView( _ webView: WKWebView , didFinish navigation: WKNavigation !) {         print ( "did finish navigation" )                  if let appDelegate: AppDelegate = UIApplication . shared . delegate as ? AppDelegate {             AppDelegate .lastPageURL = webView.url         }                  webView. evaluateJavaScript ( "document.title" ) { (value: Any ?, error: Error ?) in             if let error: Error = error {                 print (error. localizedDescription )                 return             }                          guard let title: String = value as ? String else {                 return             }                          self . navigationItem . title = title         }         self .hideNetworkingIndicators()     }     func webView( _ webView, didFail navigation: WKNavigation !, withError error: Error ) {         print ( "did fail navigation" )         print ( " \ ( error. localizedDescription )" )                  self .hideNetworkingIndicators()         let message: String = "오류발생!
" + error. localizedDescription                  let alert: UIAlertController         alert = UIAlertController (title: "알림" , message, preferredStyle: UIAlertController .alert)                  let okayaction: UIAlertAction         okayaction = UIAlertAction (title: "확인" , style: UIAlertAction . Style . cancel , handler: nil )                  alert. addAction (okayaction)                  self . present (alert, animated: true , completion: nil )     }     func webView( _ webView: WKWebView , didStartProvisionalNavigation navigation: WKNavigation !) {         print ( "did start navigation" )         self .showNetworkingIndicators()     }   }   } }