IOS和HTML5,Javascript之间的交互说明

//首先导入#import "WebViewJavascriptBridge.h"文件
//第一步：开启日志
 
// 开启日志，方便调试
[WebViewJavascriptBridge enableLogging];
 
//第二步：给ObjC与JS建立桥梁
 
// 给哪个webview建立JS与OjbC的沟通桥梁
self.bridge = [WebViewJavascriptBridgebridgeForWebView:webView];
 
// 设置代理，如果不需要实现，可以不设置
[self.bridgesetWebViewDelegate:self];
 
//第三步：注册HandleName，用于给JS端调用iOS端
 
// JS主动调用OjbC的方法
// 这是JS会调用getUserIdFromObjC方法，这是OC注册给JS调用的
// JS需要回调，当然JS也可以传参数过来。data就是JS所传的参数，不一定需要传
// OC端通过responseCallback回调JS端，JS就可以得到所需要的数据
[self.bridgeregisterHandler:@"getUserIdFromObjC"handler:^(id data, WVJBResponseCallback responseCallback) {
 NSLog(@"js call getUserIdFromObjC, data from js is %@", data);
 if (responseCallback) {
 // 反馈给JS
 responseCallback(@{@"userId": @"123456"});
 }
}];
 
[self.bridgeregisterHandler:@"getBlogNameFromObjC"handler:^(id data, WVJBResponseCallback responseCallback) {
 NSLog(@"js call getBlogNameFromObjC, data from js is %@", data);
 if (responseCallback) {
 // 反馈给JS
 responseCallback(@{@"blogName": @"星仔"});
 }
}];
 
//第四步：直接调用JS端注册的HandleName
 
[self.bridgecallHandler:@"getUserInfos"data:@{@"name": @"ddsds"}responseCallback:^(id responseData) {
 NSLog(@"from js: %@", responseData);
}];

<script>
 window.onerror = function(err) {
 log('window.onerror: ' + err)
 }
 
 /*这段代码是固定的，必须要放到js中*/
 function setupWebViewJavascriptBridge(callback) {
 if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
 if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
 window.WVJBCallbacks = [callback];
 var WVJBIframe = document.createElement('iframe');
 WVJBIframe.style.display = 'none';
 WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
 document.documentElement.appendChild(WVJBIframe);
 setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
 }
 
 /*与OC交互的所有JS方法都要放在此处注册，才能调用通过JS调用OC或者让OC调用这里的JS*/
 setupWebViewJavascriptBridge(function(bridge) {
 var uniqueId = 1
 function log(message, data) {
 var log = document.getElementById('log')
 var el = document.createElement('div')
 el.className = 'logLine'
 el.innerHTML = uniqueId++ + '. ' + message + ':<br/>' + JSON.stringify(data)
 if (log.children.length) {
 log.insertBefore(el, log.children[0])
 } else {
 log.appendChild(el)
 }
 }
 /* Initialize your app here */
 
 /*我们在这注册一个js调用OC的方法，不带参数，且不用ObjC端反馈结果给JS：打开本demo对应的博文*/
 bridge.registerHandler('openWebviewBridgeArticle', function() {
 log("openWebviewBridgeArticle was called with by ObjC")
 })
 /*JS给ObjC提供公开的API，在ObjC端可以手动调用JS的这个API。接收ObjC传过来的参数，且可以回调ObjC*/-
 bridge.registerHandler('token', function(data, responseCallback) {
 log("G星爷: ", data)
 responseCallback({这里给我返回拼接后的地址})
 })
 /*JS给ObjC提供公开的API，ObjC端通过注册，就可以在JS端调用此API时，得到回调。ObjC端可以在处理完成后，反馈给JS，这样写就是在载入页面完成时就先调用*/
 bridge.callHandler('getUserIdFromObjC', function(responseData) {
 log("JS call ObjC's getUserIdFromObjC function, and js received response:", responseData)
 })
 document.getElementById('blogIds').onclick = function (e) {
 log('js call objc: getBlogNameFromObjC')
 bridge.callHandler('ww', {'blogdURL': 'weidsfdl'}, function(response) {
 log('JS got response', response)
 })
 }
 })
 
 </script>

- (void)webViewDidFinishLoad:(UIWebView *)webView{
 // 禁用 页面元素选择
 [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitUserSelect='none';"];
 
// 禁用 长按弹出ActionSheet
 [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitTouchCallout='none';"];
}