cocos2d-x 移植到android 添加“退出” 功能

c++ 部分

//继承cclayer的 XXXXLayer的.h文件中

virtualvoid keyBackClicked();

//XXXXLayer.cpp 中 头部添加 相应的jni头文件

#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)

#include "platform/android/jni/JniHelper.h"

#include <jni.h>

#include <android/log.h>

#endif

//XXXXLayer.cpp 中 onEnter() 添加

this->setKeypadEnabled(true);

//XXXXLayer.cpp 中 实现keyBackClicked() 函数

voidNewYearBigViewLayer::keyBackClicked()

{

JniMethodInfo minfo;

bool isHave = JniHelper::getStaticMethodInfo(minfo,"com/xxxx/xxxxx/XXXXAndroid",

"sendCloseAppMessage","()V");

if(!isHave){

CCLog("jni:此方法不存在");

}else{

minfo.env->CallStaticVoidMethod(minfo.classID,minfo.methodID);

}

CCLog("jni:jni-java执行完毕");

}

////////////////////////////////////////////////////////

//AppDelegate.cpp 中

bool ispre_exit =false;

extern "C" {

void Java_com_xxxxx_xxxxx_XXXXXAndroid_nativecloseApp(JNIEnv* env, jobject thiz)

{

ispre_exit =false;

CCDirector::sharedDirector()->end();

}

voidJava_com_xxxxx_xxxxx_XXXXXAndroid_nativecancleCloseApp(JNIEnv* env, jobject thiz)

{

ispre_exit =false;

}

}

#endif

////////////////////////////////////////////////////////////////////////

//java 部分

//用hander发送消息调用 closeAppDialog()

public staticvoid sendCloseAppMessage(){

Log.d("Animals", ">>>>>>>>>>>>>>>>>>>>>>>>sendCloseAppMessage");

Message msg = Message.obtain();

msg.what = MYHandle.OPEN_CLOSE_DIALOG;

myHandler.sendMessage(msg);

}

//显示对话框

public void closeAppDialog()

{

new AlertDialog.Builder(MyPictureBook.this)

.setTitle(R.string.DialogTitle)

.setMessage(R.string.closeAppMsg).setNegativeButton(R.string.positiveBtn,new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog,int which)

{

dialog.dismiss();

nativecloseApp();

finish();

}

})

.setPositiveButton(R.string.negativeBtn,

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog,int which) {

dialog.dismiss();

nativecancleCloseApp();

}

})

.create().show();

}

public staticnativevoid nativecloseApp();

public staticnativevoid nativecancleCloseApp();

大概意思是 当点击返回键时 弹出一个对话框显示是否退出程序 选择是退出 选择否 对话框消失