Question

Unity UGUi 怎么判断 点击按钮的抬起和按下

Answer 1

方法:

1、检测按钮的按下与抬起就需要对按钮的事件进行监听。

2、这里我们创建一个脚本，把这个脚本添加引用。

[csharp] view plain copy。

using UnityEngine.EventSystems 。

3、并在脚本继承的MonoBehaviour后面加入接口。

[csharp] view plain copy。

public class ceshi : MonoBehaviour,IPointerDownHandler, IPointerUpHandler。  

4、添加了接口要把这个接口进行实现。

[csharp] view plain copy

public class ceshi : MonoBehaviour,IPointerDownHandler, IPointerUpHandler  

{  

public void OnPointerDown(PointerEventData eventData)  

{  

print("按下！！！！");  

}   

public void OnPointerUp(PointerEventData eventData)  

{  

print("抬起！！！！");  

}  

}

5、处理后。

Answer 2

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
public class EventTriggerListener : UnityEngine.EventSystems.EventTrigger{
public delegate void VoidDelegate (GameObject go);
public VoidDelegate onClick;
public VoidDelegate onDown;
public VoidDelegate onEnter;
public VoidDelegate onExit;
public VoidDelegate onUp;
public VoidDelegate onSelect;
public VoidDelegate onUpdateSelect;

static public EventTriggerListener Get (GameObject go)
{
EventTriggerListener listener = go.GetComponent(); if (listener == null) listener = go.AddComponent(); return listener;
}
public override void OnPointerClick(PointerEventData eventData)
{
if(onClick != null) onClick(gameObject);
}
public override void OnPointerDown (PointerEventData eventData){
if(onDown != null) onDown(gameObject);
}
public override void OnPointerEnter (PointerEventData eventData){
if(onEnter != null) onEnter(gameObject);
}
public override void OnPointerExit (PointerEventData eventData){
if(onExit != null) onExit(gameObject);
}
public override void OnPointerUp (PointerEventData eventData){
if(onUp != null) onUp(gameObject);
}
public override void OnSelect (BaseEventData eventData){
if(onSelect != null) onSelect(gameObject);
}
public override void OnUpdateSelected (BaseEventData eventData){
if(onUpdateSelect != null) onUpdateSelect(gameObject);
}
}
然后在你的界面里面写入监听按钮的代码。

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;
public class UIMain : MonoBehaviour {
Button button;
Image image;
void Start () 
{
button = transform.Find("Button").GetComponent