Swift基础之封装一个WebViewController

研究了一段时间，总算搞定了这个功能封装，现在给大家分享一下，具体看代码，上面有对应的文字描述，有问题请留言，下载源码，请帮忙点一下star，给点继续分享的动力，谢谢～

/**     //swift中的get方法，可以直接varget或letget显示提示，如果使用的是get方法创建视图，调用添加到父类上的时候，要self._参数，如self._wkWebV，如此就可以看出来这个get方法的名称可以跟全局定义的参数名不一样，建议除了“_”不一样外，字母最好一样     //letget     let <#property name#>: <#type name#> = {     <#statements#>     return <#value#>     }()     //varget     var <#variable name#>: <#type#> {     <#statements#>     }     //vargetset     var <#variable name#>: <#type#> {     get {     <#statements#>     }     set {     <#variable name#> = newValue     }     }     **/    //MARK: ------ 创建webView，get方法    var _webV: UIWebView {        webV = UIWebView.init(frame:CGRect.init(x:0, y:Navi_Height, width:Screen_Width, height:Screen_Height-Navi_Height))        webV.delegate = self                if Device_System >= 10.0 && canDownRefresh {            webV.scrollView.refreshControl = self._refreshContr        }        return webV    }    //MARK: ------ 创建WKWebView，get方法    var _wkWebV: WKWebView {        let configWkWeb:WKWebViewConfiguration = WKWebViewConfiguration.init()        configWkWeb.preferences = WKPreferences.init()        configWkWeb.userContentController = WKUserContentController.init()        wkWebV = WKWebView.init(frame: CGRect.init(x: 0, y: Navi_Height, width: Screen_Width, height: Screen_Height-Navi_Height), configuration: configWkWeb)        wkWebV.navigationDelegate = self        wkWebV.uiDelegate = self        //添加此属性可触发侧滑返回上一网页与下一网页操作        wkWebV.allowsBackForwardNavigationGestures = true        //下拉刷新        if Device_System >= 10.0 && canDownRefresh {            wkWebV.scrollView.refreshControl = self._refreshContr        }        //加载进度监听：观察wkwbview的estimatedProgress属性，从而调节进度条        wkWebV.addObserver(self, forKeyPath: "estimatedProgress", options: [NSKeyValueObservingOptions.new], context: nil)                return wkWebV    }    //MARK: ------ 观察者执行的方法    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {                if keyPath == "estimatedProgress" {            //取值时，这个地方跟OC中字典取值形式不一样，OC中的是change[@"new"]            loadingProgressV.progress = change?[NSKeyValueChangeKey.newKey] as! Float            //print(".......输出数值。。。\(loadingProgressV.progress)")            if loadingProgressV.progress == 1.0 {                DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + Double((Int64)(0.4 * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC), execute: {                    self.loadingProgressV.isHidden = true                })            }        }        //print("66666666")    }    //MARK: ------ 创建进度    var _loadingProgressV: UIProgressView {        loadingProgressV = UIProgressView.init(frame: CGRect.init(x: 0, y: Navi_Height, width: Screen_Width, height: 2))//        //如果要添加背景色，需要设置 .bar 样式，然后设置背景色，否则只会默认灰色//        loadingProgressV.progressViewStyle = .bar//        loadingProgressV.backgroundColor = UIColor.red                loadingProgressV.progressTintColor = UIColor.green        return loadingProgressV    }    //MARK: ------ 创建刷新    var _refreshContr: UIRefreshControl {        refreshContr = UIRefreshControl.init()        refreshContr.addTarget(self, action: #selector(webViewReload), for: .valueChanged)                return refreshContr    }    //刷新方法    func webViewReload() {        webV.reload()        wkWebV.reload()    }    //创建button    var _reloadBtn: UIButton {        reloadBtn = UIButton.init(frame: CGRect.init(x: 0, y: 0, width: 150, height: 150))        reloadBtn.center = self.view.center        reloadBtn.layer.cornerRadius = 75.0        reloadBtn.setBackgroundImage(UIImage.init(named: "placeholder_error"), for: .normal)        reloadBtn.setTitle("您的网络有问题，请检查您的网络设置", for: .normal)        reloadBtn.setTitleColor(UIColor.lightGray, for: .normal)        //跟OC调用不一样了        reloadBtn.titleEdgeInsets = UIEdgeInsetsMake(200, -50, 0, -50)        reloadBtn.titleLabel?.numberOfLines = 0        reloadBtn.titleLabel?.textAlignment = .center        var rect:CGRect = reloadBtn.frame        rect.origin.y -= 100        reloadBtn.frame = rect        reloadBtn.isEnabled = false                return reloadBtn    }    //MARK: ------ 导航按钮    func createNaviItem() {        self.showLeftBarBtnItem()        self.showRightBarBtnItem()    }    //显示左bar    func showLeftBarBtnItem() {        if webV.canGoBack || wkWebV.canGoBack {            self.navigationItem.leftBarButtonItems = [self._backBarBtnItem,self._closeBarBtnItem]        }else{            self.navigationItem.leftBarButtonItem = self._backBarBtnItem        }    }    //显示右bar    func showRightBarBtnItem() {        //这里可以添加一个举报        let rightBarBtn:UIBarButtonItem = UIBarButtonItem.init(title: "举报", style: .plain, target: self, action: #selector(rightBarClick))        self.navigationItem.rightBarButtonItem = rightBarBtn    }    func rightBarClick() {        print("点击了举报。。。。。。")    }    //创建返回bar    var _backBarBtnItem: UIBarButtonItem {        backBarBtnItem = UIBarButtonItem.init(title: "返回", style: .plain, target: self, action: #selector(backBarClick))                return backBarBtnItem    }    func backBarClick() {        if webV.canGoBack || wkWebV.canGoBack {            webV.goBack()            wkWebV.goBack()        }else{            self.navigationController?.popViewController(animated: true)        }    }    //创建关闭bar    var _closeBarBtnItem: UIBarButtonItem {        closeBarBtnItem = UIBarButtonItem.init(title: "关闭", style: .plain, target: self, action: #selector(closeBarClick))                return closeBarBtnItem    }    func closeBarClick() {        self.navigationController?.popViewController(animated: true)    }

效果图：

源码下载（下载源码，请帮忙点一下star，给点继续分享的动力，谢谢～）：https://github.com/hbblzjy/SwiftWebControllerDemo