MyWebBrowser swift 스위프트 웹브라우저 앱

MyWebBrowser swift 스위프트 웹브라우저 앱 

//

//  ViewController.swift

//  MyWebBrowser

//

//  Created by stayfoolish on 07/11/2018.

//  Copyright © 2018 stayfoolish. 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, typically from a nib.

        self.webView.navigationDelegate = self

    }

    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.startAnimating()

        UIApplication.shared.isNetworkActivityIndicatorVisible = false

    }

}

extension ViewController: WKNavigationDelegate {

    

    //MARK: WKNavigationsDelegate

    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: WKWebView, didFail navigation: WKNavigation! , withError error: Error){

        print("did fail navigation")

        print("\(error.localizedDescription)")

        

        self.hideNetworkingIndicators()

        let message: String = "오류발생!\n" + error.localizedDescription

        

        let alert: UIAlertController

        alert = UIAlertController(title: "알림", message: message, preferredStyle: UIAlertController.Style.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()

    }

}

//

//  AppDelegate.swift

//  MyWebBrowser

//

//  Created by stayfoolish on 07/11/2018.

//  Copyright © 2018 stayfoolish. All rights reserved.

//

import UIKit

// 마지막 페이지 주소를 UserDefaults에서 관리하기 위한 키 값

let lastPageURLDefaultKey: String = "lastURL"

@UIApplicationMain

class AppDelegate: UIResponder, UIApplicationDelegate {

    

    

    

    // MARK: - Prperties

    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) {

        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.

        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.

    }

    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:.

    }

}