NDK 调用对象属性

JNIEXPORT jbyteArrayJNICALL Java_com_lanhetech_iso8583_nativeLib_Iso8583NativeLib_pubPack8583
        (JNIEnv *env, jclass thiz, jobject st_iso8583, jboolean needMac){
    uint8_t _needMac = needMac;  // true是1；false是0
    jclass st_iso8583Class = (*env)->GetObjectClass(env, st_iso8583);  // 获得对象
    jfieldID id_sBitMap = (*env)->GetFieldID(env, st_iso8583Class, "sBitMap", "[B");  // 获得属性ID，未获取到值
    jbyteArray ja = (jbyteArray)(*env)->GetObjectField(env, st_iso8583, id_sBitMap);    // 获取值
    int size = (*env)->GetArrayLength(env, ja);   // 值拷贝
    uint8_t data[size];
    (*env)->GetByteArrayRegion(env, ja, 0, size, data);
}

http://zhiweiofli.iteye.com/blog/1830321

http://www.cnblogs.com/dhf-0214/p/4612618.html

http://www.cnblogs.com/lijunamneg/archive/2012/12/19/2825496.html

http://docs.oracle.com/javase/1.5.0/docs/guide/jni/spec/types.html#wp1064

http://blog.csdn.net/jinhill/article/details/6918821

** http://www.cnblogs.com/lsnproj/archive/2012/01/09/2317519.html

** http://blog.csdn.net/banketree/article/details/40535325