Unity 给UI注册hover状态的事件

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/// <summary> /// button增加鼠标hover的回调 /// </summary> public void AddTrigger(GameObject obj, EventTriggerType triggerType, UnityEngine.Events.UnityAction<BaseEventData> action) {     EventTrigger trigger = obj.GetComponent<EventTrigger>();     if (trigger == null)     {         trigger = obj.AddComponent<EventTrigger>();     }     EventTrigger.Entry entry = new EventTrigger.Entry();     entry.eventID = triggerType;     entry.callback = new EventTrigger.TriggerEvent();     entry.callback.AddListener(action);     trigger.triggers.Add(entry); }

　　

 

调用

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1	AddTrigger(btn.gameObject, EventTriggerType.PointerEnter, (eventData) => { Debug.LogError(eventData.selectedObject); });