cocos2d-x之C++ 调用Java函数并接收返回值

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参考：http://blog.csdn.net/xiaominghimi/article/details/7602984

</pre><pre code_snippet_id="1607324" snippet_file_name="blog_20160312_3_5324342" name="code" class="cpp">//java中string转C++中string

<pre name="code" class="html">#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)//jstring to char*std::string jstringTostring(JNIEnv* env, jstring jstr){char* rtn = NULL;jclass clsstring = env->FindClass("java/lang/String");jstring strencode = env->NewStringUTF("utf-8");jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B");jbyteArray barr= (jbyteArray)env->CallObjectMethod(jstr, mid, strencode);jsize alen = env->GetArrayLength(barr);jbyte* ba = env->GetByteArrayElements(barr, JNI_FALSE);if (alen > 0){rtn = (char*)malloc(alen + 1);memcpy(rtn, ba, alen);rtn[alen] = 0;}env->ReleaseByteArrayElements(barr, ba, 0);std::string stemp(rtn);free(rtn);return stemp;}#endif

//调用手机信息接口std::string callJinPhoneNum() {std::string strNum;//Android：调用手机号码接口#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)JniMethodInfo minfo;bool isHave;isHave = JniHelper::getStaticMethodInfo(minfo, PACKAGE_NAME, "getPhoneNum", "()Ljava/lang/String;");if (!isHave) {log("JNI：exitGame method is not exist");}else{jstring jsNum = (jstring)minfo.env->CallStaticObjectMethod(minfo.classID, minfo.methodID);strNum = jstringTostring(minfo.env, jsNum);}#endifreturn strNum;}

void callJinTime(std::string strTime)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
JniMethodInfo minfo;
bool isHave;
isHave = JniHelper::getStaticMethodInfo(minfo, PACKAGE_NAME, "getTime", "(Ljava/lang/String;)V");
if (!isHave) {
log("JNI：exitGame method is not exist");
}
else{
jstring jstr = minfo.env->NewStringUTF(strTime.c_str());
minfo.env->CallStaticObjectMethod(minfo.classID, minfo.methodID, jstr);
}
#endif
}

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