WKWebView的简单使用，与js交互

2019-11-09 18:45:47

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import UIKitimport WebKit@objc class BasicWkWebViewController: BasicViewController,WKNavigationDelegate { var webView: WKWebView? init(url: String!) { super.init(nibName: nil, bundle: nil) let requsetUrl = URL.init(string: url) let request = URLRequest.init(url: requsetUrl!) let wkWeb = WKWebView.init(frame: self.view.bounds) self.view.addSubview(wkWeb) wkWeb.load(request) wkWeb.navigationDelegate = self; self.webView = wkWeb } required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { let requeststr = navigationAction.request.mainDocumentURL?.relativeString; if requeststr?.range(of: "#") != nil{ let data = self.requesParmeter(request: requeststr!) if let doStr = data["do"]{ let selector = NSSelectorFromString((doStr as! String).appending(":")) if self.responds(to: selector) { self.perform(selector, with: data) decisionHandler(WKNavigationActionPolicy.cancel) } } } decisionHandler(WKNavigationActionPolicy.allow) } func requesParmeter(request: String) ->NSDictionary{ let array = request.components(separatedBy: "#") let requestStr = array.last return self.getrequestjson(requeststr: requestStr!) } func getrequestjson(requeststr: String) ->NSDictionary { let requestString = requeststr.removingPercentEncoding let strData = requestString?.data(using: String.Encoding.utf8) do { let weatherDic = try JSONSerialization.jsonObject(with: strData!, options: .mutableLeaves) return weatherDic as! NSDictionary; } catch { } return NSDictionary() } override func viewDidLoad() { super.viewDidLoad() //self.webView.addObserver(self, forKeyPath: "title", options: .new, context: nil) } // override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) { // super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context) // if keyPath == "title" { // self.title = change?[NSKeyValueChangeKey.newKey] as? String // } // } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. }// deinit {// self.webView?.removeObserver(self, forKeyPath: "title")// }}//js方法extension BasicWkWebViewController{}

OC版本

-(BOOL)webView:(UIWebView )webView shouldStartLoadWithRequest:(NSURLRequest )request navigationType:(UIWebViewNavigationType)navigationType { NSString *requeststr=request.mainDocumentURL.relativeString; if([requeststr rangeOfString:@”#”].location!=NSNotFound) { NSDictionary *data = [self requesParmeter:requeststr]; for (NSString *str in self.webStringArray) { if (![data.allKeys containsObject:@”do”]) return NO; // if ([requeststr rangeOfString:str].location != NSNotFound) { if ([data[@”do”] isEqualToString:str]) { [self performSelector:NSSelectorFromString([str stringByAppendingString:@”:”]) withObject:data]; return NO; } } } return YES; }

//初始化公用参数的数组 - (NSArray *)webStringArray { if (_webStringArray == nil) { _webStringArray = @[]; } return _webStringArray; }

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