关于unity:添加EventTrigger事件监听方法

  /// <summary>    /// 增加EventTrigger事件监听办法    /// </summary>    /// <param name="trans"></param>    /// <param name="type"></param>    /// <param name="action"></param>    public static void AddEventTriggerHandler(this Transform trans, EventTriggerType type,UnityAction<BaseEventData> action)    {        EventTrigger eventTrigger = null;        if (!trans.TryGetComponent<EventTrigger>(out eventTrigger))        {            eventTrigger = trans.gameObject.AddComponent<EventTrigger>();        }        if (eventTrigger.triggers == null)        {            eventTrigger.triggers = new List<EventTrigger.Entry>();        }        var entry = eventTrigger.triggers.FirstOrDefault(p => p.eventID == type);        if (entry == null)        {            entry = new EventTrigger.Entry            {                eventID = type,            };            entry.callback.AddListener(action);            eventTrigger.triggers.Add(entry);        }        else        {            entry.callback.RemoveAllListeners();            entry.callback.AddListener(action);        }    }    /// <summary>    /// 增加带自定义参数的EventTrigger事件监听办法    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="trans"></param>    /// <param name="type"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddEventTriggerHandler<T>(this Transform trans, EventTriggerType type, UnityAction<BaseEventData, T> action, T t)    {        trans.AddEventTriggerHandler(type,p =>        {            action(p,t);        });    }