说白了，就是JavaScript和Java之间的函数互相调用。
先看一下效果
有了这个交互，为了以后接sdk做准备。
要点：
javascript调用java：
jsb.reflection.callStaticMethod("org/cocos2dx/javascript/AppActivity", "hello", "(Ljava/lang/String;)V", "this is a message from js");
java调用javaScript：
Cocos2dxJavascriptJavaBridge.evalString("Global.mlayer.exit_cancle();"); // java to js
在这里我把这cocos2d-js的app.js 和 Android工程的AppActivity.java 的代码贴上，代码也有注释，纯干货，拿走就能用！
app.js:
var HelloWorldLayer = cc.Layer.extend({ txt_info:null, sprite:null, ctor:function () { // // 1. super init first this._super(); / // 2. add a menu item with "X" image, which is clicked to quit the program // you may modify it. // ask the window size var size = cc.winSize; var mainscene = ccs.load(res.MainScene_json); this.addChild(mainscene.node); /* you can create scene with following comment code instead of using csb file. / // 3. add your codes below... // add a label shows "Hello World" // create and initialize a label var helloLabel = new cc.LabelTTF("Hello World", "Arial", 38); // position the label on the center of the screen helloLabel.x = size.width / 2; helloLabel.y = size.height / 2 + 200; // add the label as a child to this layer this.addChild(helloLabel, 5); // add "HelloWorld" splash screen" this.sprite = new cc.Sprite(res.HelloWorld_png); this.sprite.attr({ x: size.width / 2, y: size.height / 2 }); this.addChild(this.sprite, 0); */ //“测试传参”按钮 var btn_hello = ccui.helper.seekWidgetByName(mainscene.node, "Button_1"); btn_hello.addTouchEventListener(this.btn_hello_clicked,this); //"测试返回值" 按钮 var btn_testReturn = ccui.helper.seekWidgetByName(mainscene.node, "Button_2"); btn_testReturn.addTouchEventListener(this.btn_testReturn_clicked,this); //“测试对话框” 按钮 var btn_dialog = ccui.helper.seekWidgetByName(mainscene.node, "Button_3"); btn_dialog.addTouchEventListener(this.btn_dialog_clicked,this); //文本提示 this.txt_info = ccui.helper.seekWidgetByName(mainscene.node, "Text_1"); this.txt_info.setString("default"); return true; }, //打开java层的对话框 btn_dialog_clicked:function(sender,type) { if(type == ccui.Widget.TOUCH_ENDED) { //弹出提示框 ok jsb.reflection.callStaticMethod("org/cocos2dx/javascript/AppActivity", "showAlertDialog", "(Ljava/lang/String;Ljava/lang/String;)V", "提示","您确认要退出游戏？"); } }, //测试 java函数的返回值 btn_testReturn_clicked:function(sender,type) { if(type == ccui.Widget.TOUCH_ENDED) { //测试返回值 ok var result = jsb.reflection.callStaticMethod("org/cocos2dx/javascript/AppActivity", "sum", "(II)I", 3, 7); cc.log("result"+result); this.txt_info.setString("sum="+result); } }, btn_hello_clicked:function(sender,type){ //根据触发事件的类型进行分情况处理 switch (type) { case ccui.Widget.TOUCH_BEGAN: //cc.log("btn_hello Touch Began"); break; case ccui.Widget.TOUCH_MOVED: //cc.log("btn_hello Touch Moved"); break; case ccui.Widget.TOUCH_ENDED: //cc.log("btn_hello Touch Ended"); cc.log("TODO call java"); jsb.reflection.callStaticMethod("org/cocos2dx/javascript/AppActivity", "hello", "(Ljava/lang/String;)V", "this is a message from js"); break; case ccui.Widget.TOUCH_CANCELED: //cc.log("btn_hello Touch Canceled"); break; default: break; } }, exit_sure:function() { this.txt_info.setString("确定"); }, exit_cancle:function() { this.txt_info.setString("取消"); }, }); var HelloWorldScene = cc.Scene.extend({ onEnter:function () { this._super(); var layer = new HelloWorldLayer(); Global.mlayer = layer;//保存到全局变量 this.addChild(layer); }});
AppActivity.java:
/****************************************************************************Copyright (c) 2008-2010 Ricardo QuesadaCopyright (c) 2010-2012 cocos2d-x.orgCopyright (c) 2011 Zynga Inc.Copyright (c) 2013-2014 Chukong Technologies Inc. http://www.cocos2d-x.orgPermission is hereby granted, free of charge, to any person obtaining a copyof this software and associated documentation files (the "Software"), to dealin the Software without restriction, including without limitation the rightsto use, copy, modify, merge, publish, distribute, sublicense, and/or sellcopies of the Software, and to permit persons to whom the Software isfurnished to do so, subject to the following conditions:The above copyright notice and this permission notice shall be included inall copies or substantial portions of the Software.THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS ORIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THEAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHERLIABILITY, 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 INTHE SOFTWARE.****************************************************************************/package org.cocos2dx.javascript;import org.cocos2dx.lib.Cocos2dxActivity;import org.cocos2dx.lib.Cocos2dxGLSurfaceView;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.pm.ActivityInfo;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.os.Bundle;import android.view.WindowManager;import android.widget.Toast;import org.cocos2dx.lib.Cocos2dxJavascriptJavaBridge;// The name of .so is specified in AndroidMenifest.xml. NativityActivity will load it automatically for you.// You can use "System.loadLibrary()" to load other .so files.public class AppActivity extends Cocos2dxActivity{ /* * by joe */ private static AppActivity app = null; //private static Context mContent = null; static String hostIPAdress = "0.0.0.0"; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); if(nativeIsLandScape()) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE); } else { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT); } if(nativeIsDebug()){ getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON, WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); } hostIPAdress = getHostIpAddress(); /** * by joe */ app = this; //mContent = this; } @Override public Cocos2dxGLSurfaceView onCreateView() { Cocos2dxGLSurfaceView glSurfaceView = new Cocos2dxGLSurfaceView(this); // TestCpp should create stencil buffer glSurfaceView.setEGLConfigChooser(5, 6, 5, 0, 16, 8); return glSurfaceView; } public String getHostIpAddress() { WifiManager wifiMgr = (WifiManager) getSystemService(WIFI_SERVICE); WifiInfo wifiInfo = wifiMgr.getConnectionInfo(); int ip = wifiInfo.getIpAddress(); return ((ip & 0xFF) + "." + ((ip >>>= 8) & 0xFF) + "." + ((ip >>>= 8) & 0xFF) + "." + ((ip >>>= 8) & 0xFF)); } public static String getLocalIpAddress() { return hostIPAdress; } private static native boolean nativeIsLandScape(); private static native boolean nativeIsDebug(); //---------------以下是cocos2dx-js 与 java 交互-------------------------- /* * 目前Cocos2d-js中支持的Java类型签名有下面4种 Java类型 签名 int I float F boolean Z String Ljava/lang/String; */ /** * * jsb.reflection.callStaticMethod("org/cocos2dx/javascript/AppActivity", "hello", "(Ljava/lang/String;)V", "this is a message from js"); * js->java * 测试无返回值的 * @param msg */ public static void hello(final String msg){ System.out.println(msg); app.runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(app, msg, Toast.LENGTH_SHORT).show(); } }); } /** * * var result = jsb.reflection.callStaticMethod("org/cocos2dx/javascript/AppActivity", "sum", "(II)I", 3, 7); * js->java * 测试有返回值的 * @param a * @param b * @return */ public static int sum(int a, int b){ return a + b; } /** * 弹出一个对话框 * @param title * @param message */ public static void showAlertDialog(final String title,final String message) { //这里一定要使用runOnUiThread app.runOnUiThread(new Runnable() { @Override public void run() { // 创建构建器 AlertDialog.Builder builder = new AlertDialog.Builder(app); builder.setTitle(title)//提示 .setMessage(message)//您确认要退出游戏？ .setIcon(null)//.setIcon(R.drawable.icon) .setPositiveButton("确定", new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { //System.out.println("是 clicked"); Toast.makeText(app, "确定", Toast.LENGTH_SHORT).show(); //跳出一个提示。 //Toast.makeText(mContent, "确定", Toast.LENGTH_SHORT).show(); //call cocos 函数 exit_sure app.runOnGLThread(new Runnable() { @Override public void run() { Cocos2dxJavascriptJavaBridge.evalString("Global.mlayer.exit_sure();"); // java to js } }); }}) .setNegativeButton("取消", new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { //System.out.println("否 clicked"); Toast.makeText(app, "取消", Toast.LENGTH_SHORT).show(); //call cocos 函数 exit_cancle app.runOnGLThread(new Runnable() { @Override public void run() { Cocos2dxJavascriptJavaBridge.evalString("Global.mlayer.exit_cancle();"); // java to js } }); }}); builder.create().show(); } }); } /** * java->js * @param a * @param b */ public static void callcocos(int a){ app.runOnGLThread(new Runnable() { @Override public void run() { //test // Cocos2dxJavascriptJavaBridge.evalString("SDKManage.javaToJSCall(\"a\", 5 , 7);"); // java to js } }); } }