專案中，有時候匯入一些資源時候，需要對應建立材質球，如果每次自己動手建立，還是挺麻煩的，下面是如何匯入資源時候自動建立材質球。

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using System.IO;

public class BuildMaterial : UnityEditor.AssetModificationProcessor
{

    //生成出的Material的路徑
    private static string MaterialsPath = "Assets/Resources/Skin/"
 
;

    // 建立選單按鈕，手工呼叫建立材質
    [MenuItem ("HETools/BuildMaterials")]
    static void CreateMateral ()
    {
        Object[] selectObject = Selection.objects;

        List<string> path = new List<string> ();
        foreach (Object obj in selectObject) {
            path.Add (AssetDatabase.GetAssetPath (obj));
        }

        foreach
 
 (string p in path) {
            CreateOneMateral (p);
        }
        System.GC.Collect ();
    }

    // 監控assets資源新增，發現指定目錄ThemeTile有新增加的texture，就自動生成材質
    public static void OnWillCreateAsset (string path)
    {
        int index = path.LastIndexOf (".");
        string file = path.Substring (index);
        string
 
[] pathArr = path.Split ('/');
        if (pathArr [pathArr.Length - 3] != "ThemeTile")
            return;

        CreateOneMateral (path);
        System.GC.Collect ();
    }

    // 建立材質球
    static void CreateOneMateral (string p)
    {
        p = p.Replace (".meta", "");
        Debug.Log ("CreateOneMateral from path: " + p);

        int pos = p.LastIndexOf ('/');
        if (pos == -1)
            return;

        string[] strArr = p.Split ('/');

        string themeIDStr = strArr [strArr.Length - 2];

        Texture textur = (Texture)AssetDatabase.LoadAssetAtPath (p, typeof(Texture)) as Texture;

        string name = strArr [strArr.Length - 1];

        int y = name.IndexOf ('.');
        name = name.Substring (0, y);
        Material mater = new Material (Shader.Find ("Mobile/VertexLit"));
        mater.mainTexture = textur;

        AssetDatabase.CreateAsset (mater, MaterialsPath + themeIDStr + "/" + name + ".mat");
    }
}

注意，上面程式碼中我是規定了只有指定的目錄新增texture才會自動生成材質，所以使用時候，請自行修改下。

這裡發現了個問題：
匯入貼圖時候，自動創建出來的材質球丟失了紋理圖，而採用選單按鈕點選創建出來的正常。問題還沒有解決，有哪位朋友知道解決辦法可以告訴我下。