#JsBridge ----- inspired and modified from [this](https://github.com/jacin1/JsBridge) and wechat jsBridge file, with some bugs fix and feature enhancement. This project make a bridge between Java and JavaScript. It provides safe and convenient way to call Java code from js and call js code from java. ## Demo  ## Usage ## JitPack.io I strongly recommend https://jitpack.io ```groovy repositories { // ... maven { url "https://jitpack.io" } } dependencies { compile 'com.github.lzyzsd:jsbridge:1.0.4' } ``` ## Use it in Java add com.github.lzyzsd.jsbridge.BridgeWebView to your layout, it is inherited from WebView. ### Register a Java handler function so that js can call ```java webView.registerHandler("submitFromWeb", new BridgeHandler() { @Override public void handler(String data, CallBackFunction function) { Log.i(TAG, "handler = submitFromWeb, data from web = " + data); function.onCallBack("submitFromWeb exe, response data from Java"); } }); ``` js can call this Java handler method "submitFromWeb" through: ```javascript WebViewJavascriptBridge.callHandler( 'submitFromWeb' , {'param': str1} , function(responseData) { document.getElementById("show").innerHTML = "send get responseData from java, data = " + responseData } ); ``` You can set a default handler in Java, so that js can send message to Java without assigned handlerName ```java webView.setDefaultHandler(new DefaultHandler()); ``` ```javascript window.WebViewJavascriptBridge.send( data , function(responseData) { document.getElementById("show").innerHTML = "repsonseData from java, data = " + responseData } ); ``` ### Register a JavaScript handler function so that Java can call ```javascript WebViewJavascriptBridge.registerHandler("functionInJs", function(data, responseCallback) { document.getElementById("show").innerHTML = ("data from Java: = " + data); var responseData = "Javascript Says Right back aka!"; responseCallback(responseData); }); ``` Java can call this js handler function "functionInJs" through: ```java webView.callHandler("functionInJs", new Gson().toJson(user), new CallBackFunction() { @Override public void onCallBack(String data) { } }); ``` You can also define a default handler use init method, so that Java can send message to js without assigned handlerName for example: ```javascript bridge.init(function(message, responseCallback) { console.log('JS got a message', message); var data = { 'Javascript Responds': 'Wee!' }; console.log('JS responding with', data); responseCallback(data); }); ``` ```java webView.send("hello"); ``` will print 'JS got a message hello' and 'JS responding with' in webview console. ## Notice This lib will inject a WebViewJavascriptBridge Object to window object. So in your js, before use WebViewJavascriptBridge, you must detect if WebViewJavascriptBridge exist. If WebViewJavascriptBridge does not exit, you can listen to WebViewJavascriptBridgeReady event, as the blow code shows: ```javascript if (window.WebViewJavascriptBridge) { //do your work here } else { document.addEventListener( 'WebViewJavascriptBridgeReady' , function() { //do your work here }, false ); } ``` ## License This project is licensed under the terms of the MIT license.