DSBridge is currently the best Javascript bridge in the world , by which we can call functions synchronously and asynchronously between web and Native . Moreover, both android and ios are supported !

DSBridge-IOS:https://github.com/wendux/DSBridge-IOS

DSBridge-Android:https://github.com/wendux/DSBridge-Android

2.0更新列表：https://juejin.im/post/593fa055128fe1006aff700a

1. Add the JitPack repository to your build file

   allprojects {
     repositories {
      ...
      maven { url 'https://jitpack.io' }
     }
   }

2. Add the dependency

   dependencies {
   	compile 'com.github.wendux:DSBridge-Android:2.0-SNAPSHOT'
   	//compile 'com.github.wendux:DSBridge-Android:master-SNAPSHOT'
   }

1. Implement apis in Java

   public class JsApi{
       //for synchronous invocation
       @JavascriptInterface
       String testSyn(JSONObject jsonObject) throws JSONException {
           return jsonObject.getString("msg") + "［syn call］";
       }
       //for asynchronous invocation
       @JavascriptInterface
       void testAsyn(JSONObject jsonObject, CompletionHandler handler) throws JSONException {
           handler.complete(jsonObject.getString("msg")+" [asyn call]");
       }
   }

   For security reason, Java api must be with "@JavascriptInterface" annotation, For more detail about this topic, please google .

2. Setup api class to DWebView instance.

   import wendu.dsbridge.DWebView
   ...
   DWebView dwebView= (DWebView) findViewById(R.id.dwebview);
   dwebView.setJavascriptInterface(new JsApi());

3. Call Java api in Javascript, and declare a global javascript function for the following java invocation.

   //Call synchronously 
   var str=dsBridge.call("testSyn", {msg: "testSyn"});
   //Call asynchronously
   dsBridge.call("testAsyn", {msg: "testAsyn"}, function (v) {
     alert(v);
   })
   
   //Register javascrit function for Native invocation
    dsBridge.register('addValue',function(l,r){
        return l+r;
    })

4. Call Javascript function in java

   webView.callHandler("addValue",new Object[]{1,"hello"},new OnReturnValue(){
          @Override
          public void onValue(String retValue) {
             Log.d("jsbridge","call succeed,return value is "+retValue);
          }
   });

​ Notice: Be sure that calling javascript functions must at "PageFinished".

"dsBridge" is a built-in object , it has two method "call" and "register";

Call Java api synchronously and asynchronously。

method: Java method name

args: arguments with json object

callback(String returnValue):callback to handle the result. only asynchronous invocation required.

Register javascript method for Native invocation.

methodName: javascript function name

function: javascript method body.

In order to be compatible with IOS and Android, we make the following convention on native api signature:

1. The tye of return value must be String; if not need, just return null.
2. The arguments passed by JSONObject, if the api doesn't need argument, you still need declare the jsonObject argument.

In DWebview, the following functions will execute in main thread automatically, you need not to switch thread by yourself.

void loadUrl( String url) 
void loadUrl(final String url, Map<String, String> additionalHttpHeaders)
void evaluateJavascript(String script) 

For alert/confirm/prompt dialog, DSBridge has implemented them all by default, if you want to custom them, override the corresponding callback in WebChromeClient class.

If you like DSBridge, please star to let more people know it , Thank you 😄.