真实时间倒计时

QQ截图20210511170042.png

using System;
using UnityEngine.UI;

public class CountDownTimer
{
    bool _timerIsRunning = false;
    Text timeText;
    DateTime daysLeft;
    Action action;

    public CountDownTimer(Text text,double day=0, double hour = 0, double min = 0, double sec = 0, Action ac = null)
    {
        daysLeft = DateTime.Now.AddDays(day).AddHours(hour).AddMinutes(min).AddSeconds(sec);
        action = ac;
        timeText = text;
    }
 
    public void TimerStart()
    {
        _timerIsRunning = true;
    }

    public void TimerStop()
    {
        _timerIsRunning = false;
    }

    public void Update()
    {
        if (_timerIsRunning)
        {
            DateTime startDate = DateTime.Now;
            var ts = daysLeft - startDate;
            if (ts < TimeSpan.Zero)
            {
                _timerIsRunning = false;
                action?.Invoke();
                return;
            }
            float days = ts.Days;
            float hour = ts.Hours;
            float minutes = ts.Minutes;
            float seconds = ts.Seconds;
            timeText.text = string.Format("{0}天{1:00}:{2:00}：{3:00}", days, hour, minutes, seconds);
        }
    }
}

    var timer = new CountDownTimer(text, day, hour, min, sec);
        timer.TimerStart();