unity UI闪烁

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class UIPalpating : MonoBehaviour
{
    /// <summary>
    /// 物体的Image组件
    /// </summary>
    Image UIImage = null;
    /// <summary>
    /// 当前颜色
    /// </summary>
    Color UIColor = new Color(1, 1, 1, 1);
    /// <summary>
    /// 保存原有状态
    /// </summary>
    float oldColorValue = 0;
    /// <summary>
    /// 闪烁标志
    /// </summary>
    bool palpatFlag = true;
    /// <summary>
    /// 闪烁速度
    /// </summary>
    [Tooltip("闪烁速度")]
    [Range(1f, 15f)] public float PalpatSpeed = 1f;
    /// <summary>
    /// 闪烁标志
    /// </summary>
    [Tooltip("闪烁标志")]
    public bool isOn = false;
    void Start()
    {
        UIImage = GetComponent<Image>();
        if (UIImage != null)
        {
            UIColor = UIImage.color;
            oldColorValue = UIColor.a;
        }
    }
    void Update()
    {
        try
        {
            if (isOn && UIImage != null)
            {
                UIAutoPalpating();
            }
        }
        catch (System.Exception ex)
        {
            Debug.Log(ex.Message);
        }
    }
    /// <summary>
    /// UI闪动
    /// </summary>
    void UIAutoPalpating()
    {
        if (UIImage.color.a <= 0)
        {
            palpatFlag = true;  // 加
        }
        else if (UIImage.color.a >= oldColorValue)
        {
            palpatFlag = false;  // 减           
        }
        if (palpatFlag)
        {
            UIColor.a += Time.deltaTime * 0.5f * PalpatSpeed;
        }
        else
        {
            UIColor.a -= Time.deltaTime * 0.5f * PalpatSpeed;
        }
        UIImage.color = UIColor;
    }
    /// <summary>
    /// UI恢复
    /// </summary>
    public void UIAutoReset()
    {
        isOn = false;
        UIColor.a = 1f;
        UIImage.color = UIColor;
    }
}