/// <summary> /// 添加一个倒计时任务 /// </summary> /// <param name="callback">回调</param> /// <param name="totalTime">倒计时总时间(单位:秒)</param> /// <returns>任务ID</returns> public int AddCountdownTask(Action <int> callback, int totalTime) { return(timer.AddCountdownTask(callback, totalTime)); }