Unity_ClickToShow_FadeInAndOut

//点击实现渐隐渐现效果

//层级结构为：

//在bg_Sprite上添加TweenAlpha 控制渐隐效果：

　　　　

//在title_sprite上添加脚本   点击实现fade in   fade out:

using UnityEngine;
using System.Collections;

/// <summary>
/// Author:许清池
/// Date:2015-10-08
/// Version:4.3.4f
/// </summary>
public class ClickToShowRightMenu : MonoBehaviour 
{

    public UISprite _bg_sprite;
    public TweenAlpha _bg_spriteAlpha;

    void OnClick()
    {
        if (_bg_spriteAlpha != null)
        {
            if (_bg_sprite.alpha == 0)
            {
                _bg_spriteAlpha.enabled = true;
                _bg_spriteAlpha.PlayForward();
            }

            if (_bg_sprite.alpha == 1)
            {
                _bg_spriteAlpha.enabled = true;
                _bg_spriteAlpha.PlayReverse();
            }

        }
    }

}

OK.