Unity5_UGUI_基础知识7_Drag面板切换前后Index

创建两个Panel分别为PanelA,PanelB，修改一下文字和B的颜色以便区分开来

如图

给两个Panel分别添加DragAndSelectIndex.cs

具体代码如下

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;
public class DragAndSelectIndex : MonoBehaviour, IPointerDownHandler, IDragHandler {  

    public void OnPointerDown (PointerEventData data) {  

        this.transform.SetSiblingIndex(1);  

    }  

    public void OnDrag(PointerEventData eventData)
    {

        this.transform.SetSiblingIndex(0);
        transform.position=Input.mousePosition;
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        this.transform.SetSiblingIndex(0);  

    }

}  

代码很简单这里不再赘述

运行效果