swift中UIWebView的使用

概述https://github.com/potato512/SYSwiftLearning // 实例化self.webview = UIWebView(frame: CGRectMake(0.0, CGRectGetHeight(segment.frame), CGRectGetWidth(self.view.bounds), (CGRectGetHeight(self.view.bounds)

https://github.com/potato512/SYSwiftLearning

// 实例化self.webvIEw = UIWebVIEw(frame: CGRectMake(0.0,CGRectGetHeight(segment.frame),CGRectGetWIDth(self.vIEw.bounds),(CGRectGetHeight(self.vIEw.bounds) - CGRectGetHeight(segment.bounds))))self.vIEw.addSubvIEw(self.webvIEw!)        self.webvIEw!.backgroundcolor = UIcolor.clearcolor()        // 使用"|"无效，应改成[xx,xx,..]// self.webvIEw!.autoresizingMask = UIVIEwautoresizing.Flexibletopmargin | UIVIEwautoresizing.FlexibleBottommarginself.webvIEw!.autoresizingMask = [UIVIEwautoresizing.FlexibleHeight,UIVIEwautoresizing.FlexibleBottommargin]self.webvIEw!.scrollVIEw.scrollEnabled = true        // 设置代理对象（注意添加协议及实现代理方法）self.webvIEw!.delegate = self

// 释放，内存管理deinit{        self.webvIEw?.delegate = nil        self.webvIEw?.loadHTMLString("",baseURL: nil)        self.webvIEw?.stopLoading()        self.webvIEw?.removeFromSupervIEw()        self.webvIEw = nil                NSURLCache.sharedURLCache().removeAllCachedResponses()        UIApplication.sharedApplication().networkActivityIndicatorVisible = false}

// MARK: - uiwebviewdelegatefunc webVIEw(webVIEw: UIWebVIEw,shouldStartLoaDWithRequest request: NSURLRequest,navigationType: UIWebVIEwNavigationType) -> Bool {        print("\(request),\(navigationType)")                // 用于控制子链接是否可以打开跳转        UIApplication.sharedApplication().networkActivityIndicatorVisible = true                return true}    func webVIEwDIDStartLoad(webVIEw: UIWebVIEw) {                // 加载开始        print("1 webVIEwDIDStartLoad")                UIApplication.sharedApplication().networkActivityIndicatorVisible = true}    func webVIEwDIDFinishLoad(webVIEw: UIWebVIEw) {        // 加载结束（加载成功）        print("2 webVIEwDIDFinishLoad")                UIApplication.sharedApplication().networkActivityIndicatorVisible = false}    func webVIEw(webVIEw: UIWebVIEw,dIDFailLoaDWithError error: NSError?) {        // 加载结束（加载失败）        print("3 webVIEw error = \(error)")                UIApplication.sharedApplication().networkActivityIndicatorVisible = false}

let item01 = UIbarbuttonItem(Title: "stop",style: UIbarbuttonItemStyle.Done,target: self,action: Selector("buttonClick:"))item01.tag = 1000let item02 = UIbarbuttonItem(Title: "start",action: Selector("buttonClick:"))item02.tag = 2000self.navigationItem.rightbarbuttonItems = [item01,item02]

// MARK: - 响应事件func buttonClick(sender:UIbarbuttonItem){        let index = sender.tag        if 1000 == index        {            // 停止            if (self.webvIEw != nil)            {                if (self.webvIEw!.loading)                {                    self.webvIEw!.stopLoading()                                        UIApplication.sharedApplication().networkActivityIndicatorVisible = false                }            }        }        else if 2000 == index        {            // 开始            if (self.webvIEw != nil)            {                if (!self.webvIEw!.loading)                {                    let request = NSURLRequest(URL: self.url)                    self.webvIEw!.loadRequest(request)                                        UIApplication.sharedApplication().networkActivityIndicatorVisible = true                }            }        }}

// 多按钮视图控件（控制webvIEw的后退，前进，或重新加载属性）let segment = UISegmentedControl(items: ["GoBack","GoForward","Reload"])self.vIEw.addSubvIEw(segment)segment.momentary = truesegment.frame = CGRectMake(0.0,0.0,40.0)segment.addTarget(self,action: Selector("segmentValueChange:"),forControlEvents: UIControlEvents.ValueChanged)

// MARK: - segmentValueChangefunc segmentValueChange(sender:UISegmentedControl){        let index = sender.selectedSegmentIndex;        switch (index)        {            case 0:                let isGoBack = self.webvIEw!.canGoBack                if isGoBack                {                    self.webvIEw?.goBack()                }            case 1:                                let isGoForward = self.webvIEw!.canGoForward                if isGoForward                {                    self.webvIEw?.goForward()                }            case 2:                let isReload = self.webvIEw!.loading                if !isReload                {                    self.webvIEw?.reload()                                        UIApplication.sharedApplication().networkActivityIndicatorVisible = true                }            default : print("无效 *** 作")        }}

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