Old method:

#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
    unsigned long size;
    char *pFileContent = (char*)CCFileUtils::getFileData("hello.lua", "r", &size);

    if (pFileContent)
    {
        // copy the file contents and add '\0' at the end, or the lua parser can not parse it
        char *pCodes = new char[size + 1];
        pCodes[size] = '\0';
        memcpy(pCodes, pFileContent, size);
        delete[] pFileContent;

        pEngine->executeString(pCodes);
        delete []pCodes;
    }
#endif

New method:

#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
    CCString* pstrFileContent = CCString::stringWithContentsOfFile("hello.lua");
    if (pstrFileContent)
    {
       pEngine->executeString(pstrFileContent->getCString());
    }
#endif