NGUI实现简单的倒计时组件

 using System;
 using UnityEngine;

 public enum ETimerType
 {
     CommonFormat,     // 78 77 76 75 ...
     TimeFormat,       //以时间格式显示倒计时
 }

 //自定义时间
 public class CustomTime
 {
     public int Days, Hours, Minutes, Seconds;

     public CustomTime(int seconds)
     {
         Days = seconds / ;

         seconds = seconds - Days * ;
         Hours = seconds / ;

         seconds = seconds - Hours * ;
         Minutes = seconds / ;

         Seconds = seconds % ;
     }

     public string GetTimeFormat()
     {
         string formatTime = "";
         if (Days > )
         {
             formatTime = string.Format("{0}天{1}:{2}:{3}", Days.ToString(), Hours.ToString("D2"), Minutes.ToString("D2"), Seconds.ToString("D2"));
         }
         else if (Hours > )
         {
             formatTime = string.Format("{0}:{1}:{2}", Hours.ToString("D2"), Minutes.ToString("D2"), Seconds.ToString("D2"));
         }
         else if (Minutes > )
         {
             formatTime = string.Format("{0}:{1}", Minutes.ToString("D2"), Seconds.ToString("D2"));
         }
         else if (Seconds > )
         {
             formatTime = string.Format("{0}", Seconds.ToString("D2"));
         }
         return formatTime;
     }
 }

 [RequireComponent(typeof(UILabel))]
 public class LabelTimer : MonoBehaviour
 {
     public delegate void OnFinish();
     public event OnFinish EvFinish;

     public int totalTime = ;
     public float interval = ;

     ETimerType timerType = ETimerType.CommonFormat;
     UILabel mLabel = null;

     void Start()
     {
         mLabel = GetComponent<UILabel>();
     }

     void Update()
     {
         interval += Time.deltaTime;
         if (interval >= )
         {
             --totalTime;
             ShowTime();
             interval = ;
         }

         if (totalTime <= )
         {
             enabled = false;
             gameObject.SetActive(false);
             if (null != EvFinish)
                 EvFinish();
         }
     }

     void ShowTime()
     {
         if (timerType == ETimerType.CommonFormat)
         {
             mLabel.text = totalTime.ToString();
         }
         else if (timerType == ETimerType.TimeFormat)
         {
             CustomTime ct = new CustomTime(totalTime);
             mLabel.text = ct.GetTimeFormat();
         }
     }

     public void Stop()
     {
         gameObject.SetActive(false);
         totalTime = ;
         EvFinish = null;
     }

     public bool TimeKeeping
     {
         get
         {
             return totalTime > ;
         }
     }

     public void StartCountDown(int totalTime, ETimerType timerType)
     {
         this.timerType = timerType;
         if (null == mLabel)
             mLabel = GetComponent<UILabel>();
         this.totalTime = totalTime;
         interval = ;
         enabled = true;
         ShowTime();
         if (!gameObject.activeSelf)
             gameObject.SetActive(true);
     }

     public static LabelTimer Begin(GameObject go, int totalTime, ETimerType timerType = ETimerType.CommonFormat)
     {
         LabelTimer lt = go.GetComponent<LabelTimer>();
         if (null == lt) lt = go.AddComponent<LabelTimer>();
         lt.StartCountDown(totalTime, timerType);
         return lt;
     }
 }