一步一步學習Swift之(四)玩轉UIWebView

標籤：

實現原理:

1.通過UIWebView的stringByEvaluatingJavaScriptFromString方法來觸發指令碼

2.通過自訂串連來觸發oc代碼

實現過程

@IBOutlet weak var webView: UIWebView!    override func viewDidLoad() {        super.viewDidLoad()       webView.loadRequest(NSURLRequest(URL: NSURL(string: "http://passport.cnblogs.com/user/signin")!))        webView.delegate=self    }    //串連改變時    func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool{       var rurl =  request.URL?.absoluteString        if (rurl!.hasPrefix("ios:")){          var method =  rurl!.componentsSeparatedByString("@")[1]            if method == "signin_go"{                 signin_go()            }            return false        }       return true    }    //載入完成時    func webViewDidFinishLoad(webView: UIWebView){        //注入指令碼,這個指令碼把登入方法js重寫為串連        var jsPath =  NSBundle.mainBundle().pathForResource("app", ofType: "js")        var jsContent:NSString = NSString (contentsOfFile: jsPath!, encoding: 0, error: nil)!        jsContent=jsContent.stringByReplacingOccurrencesOfString("\n", withString: "")        webView.stringByEvaluatingJavaScriptFromString(jsContent as String)    }        func signin_go(){    NSLog("-我執行了signin_go-")    }

var script = document.createElement(‘script‘);script.type = ‘text/javascript‘;script.text = ‘function signin_go(){   location.href="ios:@signin_go";}‘;document.getElementsByTagName(‘head‘)[0].appendChild(script);

 

轉載請註明來源:http://www.cnblogs.com/wuxian/p/4470634.html 

一步一步學習Swift之(四)玩轉UIWebView