倒计时计时器

将该脚本挂载点UI上的Text上

using System;
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class TimeCountdown : MonoBehaviour {

//之前的一个时间点  
public long startTime = 1435870304;
//限定时间秒  
private long fixedTime = 200000;
private long nowTime;


bool isOver = false;




// Use this for initialization  
void Start()
{
    nowTime = (System.DateTime.Now.Ticks - System.DateTime.Parse("1970-01-01").Ticks) / 10000000;
    Debug.Log(nowTime.ToString());
    InvokeRepeating("CountDown", 0, 1);
}


// Update is called once per frame  
void Update()
{
    if (!isOver && nowTime - startTime >= fixedTime)
    {
        Debug.Log("倒计时结束");
        isOver = true;
    }
}


void CountDown()
{
    fixedTime -= 1;
    gameObject.GetComponent<Text>().text = (fixedTime / (60 * 60 * 24)).ToString() + "天"
         + ((fixedTime / 60 - fixedTime / (60 * 60 * 24) * 24 * 60) / 60).ToString() + "小时"
         + ((fixedTime / 60) % 60).ToString() + "分"
         + (fixedTime % 60).ToString() + "秒";
}

}