<dependency>
  <groupId>com.google.code.gson</groupId>
  <artifactId>gson</artifactId>
  <version>2.3</version>
</dependency>
<dependency>
  <groupId>cn.pedant.safewebviewbridge</groupId>
  <artifactId>library</artifactId>
  <version>1.4</version>
  <type>aar</type>
</dependency>

repositories {
    mavenCentral()
}

dependencies {
    compile 'cn.pedant.safewebviewbridge:library:1.4'
}

WebView wv = new WebView(this);
WebSettings ws = wv.getSettings();
ws.setJavaScriptEnabled(true);
wv.setWebChromeClient(
    new InjectedChromeClient("HostApp", HostJsScope.class)
);
wv.loadUrl("file:///android_asset/test.html");

public class CustomChromeClient extends InjectedChromeClient {

    public CustomChromeClient (String injectedName, Class injectedCls) {
        super(injectedName, injectedCls);
    }

    @Override
    public boolean onJsAlert(WebView view, String url, String message, final JsResult result) {
        // to do your work
        // ...
        return super.onJsAlert(view, url, message, result);
    }

    @Override
    public void onProgressChanged (WebView view, int newProgress) {
        super.onProgressChanged(view, newProgress);
        // to do your work
        // ...
    }

    @Override
    public boolean onJsPrompt(WebView view, String url, String message, String defaultValue, JsPromptResult result) {
        // to do your work
        // ...
        return super.onJsPrompt(view, url, message, defaultValue, result);
    }
}

public static void testA (WebView webView) {}

HostApp.testA();

public static int overloadMethod(WebView view, int val) {
    return val;
}
public static String overloadMethod(WebView view, String val) {
    return val;
}

public static int overloadMethod(WebView view, int val) {
    return val;
}
public static long overloadMethod(WebView view, long val) {
    return val;
}
public static double overloadMethod(WebView view, double val) {
    return val;
}

public static void delayJsCallBack(WebView view, int ms, final String backMsg, final JsCallback jsCallback) {
  TaskExecutor.scheduleTaskOnUiThread(ms*1000, new Runnable() {
      @Override
      public void run() {
          jsCallback.apply(backMsg);
      }
  });
}

HostApp.delayJsCallBack(3, 'call back haha', function (msg) {
  HostApp.alert(msg);
});

public static void setOnScrollBottomListener (WebView view, JsCallback jsCallback) {
	jsCallback.setPermanent(true);
	...
}

HostApp.passLongType(14102300951321235)

HostApp.passLongType(14102300951321235+'')。	

#--------------- BEGIN: Gson防混淆 ----------
-keepattributes *Annotation*
-keep class sun.misc.Unsafe { *; }
-keep class com.idea.fifaalarmclock.entity.***
-keep class com.google.gson.stream.** { *; }
#--------------- END ----------

#--------------- BEGIN: 返回到页面的自定义Java对象防混淆 ----------
-keepclassmembers class cn.pedant.SafeWebViewBridge.sample.HostJsScope$RetJavaObj{ *; }
#--------------- END ----------

#--------------- BEGIN: 注入到页面的接口类防混淆 ----------
-keepclassmembers class cn.pedant.SafeWebViewBridge.sample.HostJsScope{ *; }
#--------------- END ----------

The MIT License (MIT)

Copyright (c) 2014 Pedant(http://pedant.cn)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.