/// <summary>
 /// 卸载某个bank ,
 /// 注意bank 是有计数累计的,只有 计数累计 等于0 时才真正卸载
 /// </summary>
 /// <param name="bankName"></param>
 public void UnLoadSoundBank(string bankName)
 {
     GameObject soundBankObj = null;
     if (!SoundNameAboutGameObject.ContainsKey(bankName))
     {
         return;
     }
     soundBankObj = SoundNameAboutGameObject[bankName];
     if (!GameObjectAboutBanks.ContainsKey(soundBankObj))
     {
         return;
     }
     List<TAkBank> akBanks = GameObjectAboutBanks[soundBankObj];
     if (akBanks.Count > 0)
     {
         TAkBank akBank = akBanks[0];
         GameObject.Destroy(akBank);
         akBanks.RemoveAt(0);
     }
     if (akBanks.Count == 0)
     {
         GameObject.Destroy(soundBankObj);
         SoundNameAboutGameObject.Remove(bankName);
     }
 }
    /// <summary>
    /// 加载bank
    /// </summary>
    /// <param name="bankName"></param>
    public void LoadSoundBank(string bankName, AkBank.VoidCompleted voidCompleted = null)
    {
        GameObject soundBankObj = null;
        if (!SoundNameAboutGameObject.ContainsKey(bankName))
        {
            soundBankObj = new GameObject(string.Format("SoundBank_{0}", bankName));
            soundBankObj.transform.SetParent(SoundBankObjRoot.transform, false);
            SoundNameAboutGameObject.Add(bankName, soundBankObj);
        }

        soundBankObj = SoundNameAboutGameObject[bankName];
        soundBankObj.SetActive(false);
        TAkBank akBank = soundBankObj.AddComponent<TAkBank>();
        akBank.Completed = voidCompleted;
        akBank.SetBankName(bankName);
        soundBankObj.SetActive(true);

        List<TAkBank> akBanks = null;
        if (!GameObjectAboutBanks.ContainsKey(soundBankObj))
        {
            akBanks = new List<TAkBank>();
            GameObjectAboutBanks.Add(soundBankObj, akBanks);
        }
        GameObjectAboutBanks[soundBankObj].Add(akBank);

        WWISE_FirstBankNameList.Add(bankName);
    }