Androi-Java-安卓-C 获取系统当前时间 精确到微秒级别

通过C获取微秒

JNIEXPORT jlongArray JNICALL Java_com_test_ndkhelloword_MainActivity_getTimesFromJni(
        JNIEnv *env, jobject thiz) {
    jlongArray time = env->NewLongArray(2);
    jlong temp[] = { 0, 0 };
    struct timeval begin;
    gettimeofday(&begin, NULL);
    temp[0] = begin.tv_sec;
    temp[1] = begin.tv_usec;
    env->SetLongArrayRegion(time, 0, 2, temp);
    return time;
}