swift - UIWebView 和 WKWebView(iOS12 之后替换UIWebView)

1.iOS12 之前 使用 UIWebView

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

1>    private lazy var webV : UIWebView = {         let v = UIWebView(frame: self.view.bounds)                   let url = URL(string: "https://www.baidu.com/")         v.delegate = self         if let url = url {             let  urlRequest = URLRequest(url: url)             v.loadRequest(urlRequest)         }         return v     }()     2>     override func viewDidLoad() {         super.viewDidLoad()         view.addSubview(webV)     }   3> extension ViewController:UIWebViewDelegate{       }

　　

2. iOS 12 之后 系统推荐WKWebView 替代 UIWebView

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

1>    private lazy var wkWebV: WKWebView = {         let config = WKWebViewConfiguration()         // 设置偏好设置         config.preferences = WKPreferences()         //        // 默认为0         //        config.preferences.minimumFontSize = 10         // 默认认为YES         config.preferences.javaScriptEnabled = true         // 在iOS上默认为NO，表示不能自动通过窗口打开         config.preferences.javaScriptCanOpenWindowsAutomatically = false         // web内容处理池，由于没有属性可以设置，也没有方法可以调用，不用手动创建         config.processPool = WKProcessPool()         // 通过JS与webview内容交互         config.userContentController = WKUserContentController()         // 注入JS对象名称AppModel，当JS通过AppModel来调用时，         // 我们可以在WKScriptMessageHandler代理中接收到 //        config.userContentController.add(self, name: "AppModel")                   let url = URL(string: "https://www.baidu.com/")                   let web = WKWebView(frame: view.bounds, configuration: config)         web.navigationDelegate = self         web.uiDelegate = self         if let url = url {             let  urlRequest = URLRequest(url: url)             web.load(urlRequest)                       }         return web     }()   2> view.addSubview(wkWebV)     3. extension ViewController:WKNavigationDelegate,WKUIDelegate,WKScriptMessageHandler{     func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {               }             }