Unity中傳入任意數,轉換成分,秒,並進行倒計時換算..(兩種方式)

第一種方式是利用Unity中的協程,代碼如下:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class DemoTest : MonoBehaviour
{
    public Text text;
    //測試用的數字
    public int MyTime = 60;

    void Start ()
    {
        //開啟協程
        StartCoroutine (StartUpdate ());
    }
    //一秒鍾減去1
    IEnumerator StartUpdate ()
    {
        while (true) {
            if (MyTime > 0) {
                MyTime -= 1;
                text.text = UpdateTime (MyTime);
            } else {
                break;
            }
            yield return new WaitForSeconds (1f);
        }
    }

    /// <summary>
    /// 時間換算
    /// </summary>
    /// <returns>The time.</returns>
    /// <param name="inputTime">輸入的時間</param>
    string UpdateTime (int inputTime)
    {
        string temp;
        int minute, seconds;
        minute = (int)(inputTime / 60);
        Debug.Log ("minute = " + minute);
        seconds = inputTime % 60;
        Debug.Log ("seconds = " + seconds);
//         這樣的話,當minute<0的時候只有一個數字,可能有的需求上不允許,所以就換一種方式

//        if (seconds >= 10) {
//            temp = "0" + minute + ":" + seconds;
//        } else {
//            temp = minute + ":" + seconds;
//        }

        //優化版,利用三目運算符進行取值,這樣更好的實現倒計時
        string minTemp = (minute < 10) ? "0" + minute : minute.ToString ();
        string secTemp = (seconds < 10) ? "0" + seconds : seconds.ToString ();
        temp = minTemp + ":" + secTemp;

        return temp;
    }

}

第二種方式,利用Update,原理是一樣的

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class DemoTest : MonoBehaviour
{
    public Text text;
    //測試用的數字
    public int MyTime = 60;

    float timer = 0;
    float timerInterval = 1f;



    void Update ()
    {
        timer += Time.deltaTime;
        if (timer >= timerInterval) {
            timer = 0;
            MyTime -= (int)timerInterval;
            if (MyTime < 0) {
                return;
            }
            text.text = UpdateTime (MyTime);
        }
    }

    /// <summary>
    /// 時間換算
    /// </summary>
    /// <returns>The time.</returns>
    /// <param name="inputTime">輸入的時間</param>
    string UpdateTime (int inputTime)
    {
        string temp;
        int minute, seconds;
        minute = (int)(inputTime / 60);
        Debug.Log ("minute = " + minute);
        seconds = inputTime % 60;
        Debug.Log ("seconds = " + seconds);
        //         這樣的話,當minute<0的時候只有一個數字,可能有的需求上不允許,所以就換一種方式

        //        if (seconds >= 10) {
        //            temp = "0" + minute + ":" + seconds;
        //        } else {
        //            temp = minute + ":" + seconds;
        //        }

        //優化版,利用三目運算符進行取值,這樣更好的實現倒計時
        string minTemp = (minute < 10) ? "0" + minute : minute.ToString ();
        string secTemp = (seconds < 10) ? "0" + seconds : seconds.ToString ();
        temp = minTemp + ":" + secTemp;

        return temp;
    }
}