現(xiàn)在好的IOS 的 APP有時候會跟網(wǎng)頁內(nèi)容相關(guān)聯(lián)，當(dāng)然也是增加用戶體驗，及更好的，有效的體現(xiàn)APP 的功能。
由于本人在項目中會用到這部分功能，做下記錄！
JS調(diào)用OC
很多應(yīng)用里面或多或少的調(diào)用了網(wǎng)頁，來達(dá)到絢麗的效果，所謂的JS調(diào)用OC.....舉個例子吧，網(wǎng)頁上有個按鈕
點擊按鈕跳轉(zhuǎn)界面，跳轉(zhuǎn)的動作由OC的代碼實現(xiàn)。
OC調(diào)用JS
還是舉個例子，我們OC代碼創(chuàng)建了輸入框比如輸入用戶名，輸入完成后顯示在網(wǎng)頁上，顯示用戶的用戶名
一.利用webView的代理方法實現(xiàn)OC和JS的相互調(diào)用
創(chuàng)建屬性
@property(nonatomic,strong)UIWebView * webView;
遵守webView的協(xié)議UIWebViewDelegate
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-(void)webViewLoad{ NSURL * url = [[NSURL alloc]initWithString:@"http://www.baidu.com"]; self.webView = [[UIWebView alloc]initWithFrame:self.view.bounds]; NSURLRequest * request = [[NSURLRequest alloc]initWithURL:url]; self.webView.delegate = self; [self.webView loadRequest:request]; [self.view addSubview:self.webView]; }//JS調(diào)用OC-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{ NSString * str = request.URL.relativeString; if ([str isEqualToString:@"http://www.baidu.com/"]) { NSLog(@"來找度娘"); } return YES;}//OC調(diào)用JS-(void)webViewDidFinishLoad:(UIWebView *)webView{ NSString * str = [self.webView stringByEvaluatingJavaScriptFromString:@"document.getElementById(""\"index-kw""\").value=""\"li""\""]; NSLog(@"webViewDidFinishLoad=%@",str); } |
二.利用第三方的框架實現(xiàn)(需要你和html端的人統(tǒng)一方法的名稱)
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-(void)webViewBridge{ self.webView = [[UIWebView alloc]initWithFrame:[UIScreen mainScreen].bounds]; NSString * path = [[NSBundle mainBundle]pathForResource:@"ExampleApp.html" ofType:nil]; NSURL * url = [[NSURL alloc]initFileURLWithPath:path]; [self.webView loadRequest:[NSURLRequest requestWithURL:url]]; self.webView.delegate = self; [self.view addSubview:self.webView]; //設(shè)置能夠橋接 [WebViewJavascriptBridge enableLogging]; //設(shè)置橋接 self.bridge = [WebViewJavascriptBridge bridgeForWebView:self.webView]; //設(shè)置代理 [self.bridge setWebViewDelegate:self]; //JS調(diào)用OC（testObjcCallback是和html統(tǒng)一的方法名字） [self.bridge registerHandler:@"testObjcCallback" handler:^(id data, WVJBResponseCallback responseCallback) { NSLog(@"按鈕點擊了"); self.view.backgroundColor= [UIColor blackColor]; responseCallback(@"按鈕點擊了"); }]; }//OC調(diào)用JS-(void)webViewDidFinishLoad:(UIWebView *)webView{ NSLog(@"webViewDidFinishLoad"); [self.bridge callHandler:@"registerHandler"];} |
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