协程初用

    private void OnClickButtonBeginBtnDown()
    {
        for (int i = 0; i < listDice.Count; i++)
        {
            listDice[i].timer = 0;
        }
        if (listDice.Count > 6)
        {
            textTip.SetActive(true);
            StartCoroutine(enumerator());   
        }
    }
    
    IEnumerator enumerator()
    {
        yield return new WaitForSeconds(2);
        textTip.SetActive(false);
    }

    private void Update()
    {
        CloseUI();
        if (timeKeeping == true)
        {
            TimeKeeping();
        }
    }

    //计时
    public void TimeKeeping()
    {
        timer += Time.deltaTime;
        if (timer > 5)
        {
            for (int i = 0; i < listNumberUI.Count; i++)
            {
                Instantiate(listNumberUI[i], CardList.transform);
            }
            timeKeeping = false;
            timer = 0;
            listNumberUI.Clear();
        }
    }