在拼UI的過(guò)程中會(huì)添加很多圖片文字，但是很容易會(huì)忽略其中一點(diǎn)就是把無(wú)用的RaycastTarget去掉，因?yàn)殚_(kāi)啟此選項(xiàng)，雖然此組建雖然不需要接受射線，但是它而然工作且消耗性能

在網(wǎng)上找了2個(gè)小工具：

• 其中一個(gè)是在Editor模式下用藍(lán)色框出啟用RatcastTarget的組件

Code如下。掛在任意GameObject上即可

#if UNITY_EDITOR
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class DebugUILine : MonoBehaviour
{
    static Vector3[] fourCorners = new Vector3[4];
    void OnDrawGizmos()
    {
        foreach (MaskableGraphic g in GameObject.FindObjectsOfType<MaskableGraphic>())
        {
            if (g.raycastTarget)
            {
                RectTransform rectTransform = g.transform as RectTransform;
                rectTransform.GetWorldCorners(fourCorners);
                Gizmos.color = Color.blue;
                for (int i = 0; i < 4; i++)
                    Gizmos.DrawLine(fourCorners[i], fourCorners[(i + 1) % 4]);

            }
        }
    }
}
#endif

• 第二個(gè)是自動(dòng)取消創(chuàng)建對(duì)應(yīng)Image Text 的RaycastTarget選項(xiàng)（重寫(xiě)unity創(chuàng)建對(duì)應(yīng)組件,創(chuàng)建組建后自動(dòng)取消選項(xiàng)）
  Code 如下

using UnityEngine;
using System.Collections;
using UnityEditor;
using UnityEngine.UI;

public class UITools
{
    /// <summary>
    /// 自動(dòng)取消RatcastTarget
    /// </summary>
    [MenuItem("GameObject/UI/Image")]
    static void CreatImage()
    {
        if (Selection.activeTransform)
        {
            if (Selection.activeTransform.GetComponentInParent<Canvas>())
            {
                GameObject go = new GameObject("image", typeof(Image));
                go.GetComponent<Image>().raycastTarget = false;
                go.transform.SetParent(Selection.activeTransform);
            }
        }
    }
    //重寫(xiě)Create->UI->Text事件  
    [MenuItem("GameObject/UI/Text")]
    static void CreatText()
    {
        if (Selection.activeTransform)
        {
            //如果選中的是列表里的Canvas  
            if (Selection.activeTransform.GetComponentInParent<Canvas>())
            {
                //新建Text對(duì)象  
                GameObject go = new GameObject("text", typeof(Text));
                //將raycastTarget置為false  
                go.GetComponent<Text>().raycastTarget = false;
                //設(shè)置其父物體  
                go.transform.SetParent(Selection.activeTransform);
            }
        }
    }

    //重寫(xiě)Create->UI->Text事件  
    [MenuItem("GameObject/UI/Raw Image")]
    static void CreatRawImage()
    {
        if (Selection.activeTransform)
        {
            //如果選中的是列表里的Canvas  
            if (Selection.activeTransform.GetComponentInParent<Canvas>())
            {
                //新建Text對(duì)象  
                GameObject go = new GameObject("RawImage", typeof(RawImage));
                //將raycastTarget置為false  
                go.GetComponent<RawImage>().raycastTarget = false;
                //設(shè)置其父物體  
                go.transform.SetParent(Selection.activeTransform);
            }
        }
    }
}