Unity自定義UI事件監聽

這個可以自定義UI元素的點擊，拖拽等事件。

核心方法：在代碼里面定義一個委托，腳本繼承EventTrigger搞就完了，直接代碼：

using UnityEngine;
using UnityEngine.EventSystems;


public class EventTriggerListener : EventTrigger
{
    public delegate void MouseAction(GameObject go);
    public MouseAction onEnter;
    public MouseAction onExit;
    public MouseAction onClick;

    public static EventTriggerListener Get(GameObject go)
    {
        EventTriggerListener eventTriggerListener = go.GetComponent<EventTriggerListener>();
        if (eventTriggerListener == null)
        {
            eventTriggerListener = go.AddComponent<EventTriggerListener>();
        }
        return eventTriggerListener;
    }

    public override void OnPointerClick(PointerEventData eventData)
    {
        base.OnPointerClick(eventData);
        onClick?.Invoke(gameObject);
    }
    public override void OnPointerEnter(PointerEventData eventData)
    {
        base.OnPointerEnter(eventData);
        onEnter?.Invoke(gameObject);
    }
    public override void OnPointerExit(PointerEventData eventData)
    {
        base.OnPointerExit(eventData);
        onExit?.Invoke(gameObject);
    }
}

PS:上面代碼在CS 4以下運行會報錯，委托執行方式改為：

if(onClick!=null){

　　onClick(gameObject);

} 

調用的時候獲取到物體的GameObject，直接用:

 

EventTriggerListener.Get(gameObject).onClick += (go)=>{  Debug.Log(go.name);   };

 

可以自由擴展，需要什么事件就在下面重寫事件就好啦。

 

就這樣。拜拜~