cocos2d-x 2.2.6中c++通过JNI与java互调

 1 /****************************************************************************
 2 Copyright (c) 2010-2012 cocos2d-x.org
 3 
 4 http://www.cocos2d-x.org
 5 
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11 furnished to do so, subject to the following conditions:
12 
13 The above copyright notice and this permission notice shall be included in
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15 
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17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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22 THE SOFTWARE.
23 ****************************************************************************/
24 package org.cocos2dx.hellocpp;
25 
26 import org.cocos2dx.lib.Cocos2dxActivity;
27 
28 
29 import android.app.AlertDialog;
30 import android.content.DialogInterface;
31 import android.os.Bundle;
32 import android.os.Handler;
33 import android.os.Message;
34 
35 public class HelloCpp extends Cocos2dxActivity{
36     static 
37     {
38          System.loadLibrary("hellocpp");
39     }
40     //java调用c++
41     public static native void javaToC();
42     
43     
44     
45     private static AlertDialog mDialog = null;
46     
47     
48     protected void onCreate(Bundle savedInstanceState){
49         super.onCreate(savedInstanceState);
50          mDialog = new AlertDialog.Builder(this).create();
51             mDialog.setButton("确定", new AlertDialog.OnClickListener() {
52                 @Override
53                 public void onClick(DialogInterface dialog, int which) {
54                     HelloCpp.this.finish();
55                 }
56             });
57             
58             mDialog.setButton2("取消", new AlertDialog.OnClickListener() {
59                 @Override 
60                 public void onClick(DialogInterface dialog, int which) {
61                 }
62             });
63             mDialog.setButton3("HelloC", new AlertDialog.OnClickListener()
64             {
65                 @Override public void onClick(DialogInterface dialog, int which) {
66                      // Java调用c代码
67                      HelloCpp.this.javaToC();
68                 }
69             });
70            
71     }
72     
73 
74    //c++会传入string[]然后调用c++此方法 此方法再调用下面handler方法
75     public static void sayHelloCToJava(String[] str){
76         Message mes = new Message();
77         mes.obj = str;
78         mHandler.sendMessage(mes);
79     }
80     
81     private static Handler mHandler = new Handler(new Handler.Callback() 
82     {
83         @Override
84         public boolean handleMessage(Message msg) {
85         String[] str = (String[])msg.obj;
86         mDialog.setTitle(str[0]);
87         mDialog.setMessage(str[1]);
88         mDialog.show();
89         return true;
90         }
91     });
92 }

#include "AppDelegate.h"
#include "platform/android/jni/JniHelper.h"
#include <jni.h>
#include <android/log.h>
#include "cocos2d.h"

#define  LOG_TAG    "main"
#define  LOGD(...)  __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG,__VA_ARGS__)

using namespace cocos2d;


extern "C"
{

jint JNI_OnLoad(JavaVM *vm, void *reserved)
{
    JniHelper::setJavaVM(vm);

    return JNI_VERSION_1_4;
}
//java native 调用c++的方法
/* 命名规则：Java_Java的包名_类名*/
void Java_org_cocos2dx_hellocpp_HelloCpp_javaToC()
{
    CCLog("hello java , i‘m c");
}

void Java_org_cocos2dx_lib_Cocos2dxRenderer_nativeInit(JNIEnv*  env, jobject thiz, jint w, jint h)
{
    if (!CCDirector::sharedDirector()->getOpenGLView())
    {
        CCEGLView *view = CCEGLView::sharedOpenGLView();
        view->setFrameSize(w, h);

        AppDelegate *pAppDelegate = new AppDelegate();
        CCApplication::sharedApplication()->run();
    }
    else
    {
        ccGLInvalidateStateCache();
        CCShaderCache::sharedShaderCache()->reloadDefaultShaders();
        ccDrawInit();
        CCTextureCache::reloadAllTextures();
        CCNotificationCenter::sharedNotificationCenter()->postNotification(EVENT_COME_TO_FOREGROUND, NULL);
        CCDirector::sharedDirector()->setGLDefaultValues(); 
    }

#if(CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
//    typedef struct JniMethodInfo_
//    {
//        JNIEnv *    env;
//        jclass      classID;
//        jmethodID   methodID;
//    } JniMethodInfo;

        //c++调用java包org/cocos2dx/hellocpp/HelloCpp类中的sayHelloCToJava()方法
       JniMethodInfo info;
       if(JniHelper::getStaticMethodInfo(info , "org/cocos2dx/hellocpp/HelloCpp" , "sayHelloCToJava" , "([Ljava/lang/String;)V"))
       {
           jclass str_cls = info.env->FindClass("java/lang/String");
           jstring str1 = info.env->NewStringUTF("I‘m a titile");
           jstring str2 = info.env->NewStringUTF("this is the info");
           jobjectArray arrs = info.env->NewObjectArray(2 , str_cls , 0);
           info.env->SetObjectArrayElement(arrs , 0 , str1);
           info.env->SetObjectArrayElement(arrs , 1 , str2);
           info.env->CallStaticVoidMethod(info.classID , info.methodID , arrs);
       }
   #endif
}

}