Unity API UGUI監聽事件

通過拖拽的方式監聽UGUI的事件

 

通過代碼添加對UGUI控件的事件監聽

using System;
using UnityEngine;
using UnityEngine.UI;

public class UIEventManager : MonoBehaviour {

    public GameObject btnGameObject;
    public GameObject sliderGameObject;
    public GameObject dropDownGameObject;
    public GameObject toggleGameObject;

	// Use this for initialization
	void Start () {
        btnGameObject.GetComponent<Button>().onClick.AddListener(this.ButtonOnClick);//添加按鈕的監聽事件
        sliderGameObject.GetComponent<Slider>().onValueChanged.AddListener(this.OnSliderChanged);//添加滑動條的監聽事件
        dropDownGameObject.GetComponent<Dropdown>().onValueChanged.AddListener(this.OnDropDownChanged);//添加下拉條的監聽事件
        toggleGameObject.GetComponent<Toggle>().onValueChanged.AddListener(this.OnToggleChanged);//添加單選框的監聽事件
    }
    //按鈕事件
    void ButtonOnClick()
    {
        Debug.Log("ButtonOnClick");
    }
    //滑動條事件
    void OnSliderChanged(float value)
    {
        Debug.Log("SliderChanged:" + value);
    }
    //下拉條事件
    void OnDropDownChanged(Int32 value)
    {
        Debug.Log("DropDownChanged:" + value);
    }
    //單選框事件
    void OnToggleChanged(bool value)
    {
        Debug.Log("ToggleChanged:" + value);
    }

    // Update is called once per frame
    void Update () {
		
	}
}

跟鼠標相關的事件接口的實現

查看相關接口

必須勾上此選項。

IPointerDownHandler	鼠標按下
IPointerClickHandler	鼠標點擊
IPointerUpHandler	鼠標擡起
IPointerEnterHandler	鼠標移上
IPointerExitHandler	鼠標移出

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using System;
//interface

public class UIEventManager2 : MonoBehaviour
    , IPointerDownHandler//鼠標按下
    , IPointerClickHandler//鼠標點擊
    , IPointerUpHandler//鼠標擡起
    , IPointerEnterHandler//鼠標移上
    , IPointerExitHandler//鼠標移出{
    
    public void OnPointerClick(PointerEventData eventData)
    {
        Debug.Log("OnPointerClick");
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        Debug.Log("OnPointerDown");
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        Debug.Log("OnPointerEnter");
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        Debug.Log("OnPointerExit");
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        Debug.Log("OnPointerUp");
    }
}

跟拖拽相關的事件接口的實現

IBeginDragHandler	開始拖拽
IDragHandler	拖拽中
IEndDragHandler	拖拽結束
IDropHandler	拖拽完成後在對象上擡起鼠標時觸發

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using System;
//interface

public class UIEventManager2 : MonoBehaviour
    ,IBeginDragHandler//開始拖拽
    ,IDragHandler //拖拽中
    ,IEndDragHandler //拖拽結束
    ,IDropHandler //拖拽完成後在對象上擡起鼠標時觸發
{
    public void OnBeginDrag(PointerEventData eventData)
    {
        Debug.Log("OnBeginDrag");
    }

    public void OnDrag(PointerEventData eventData)
    {
        Debug.Log("OnDrag");
    }

    public void OnDrop(PointerEventData eventData)
    {
        Debug.Log("OnDrop");
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        Debug.Log("OnEndDrag");
    }
}