unity Font字体替换

今天突然来个替换字体需求，其实不难，但是有些编写函数忘记了=。=

直接贴代码：

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

public class FontToolEditor : EditorWindow
{

    private const string MENU_MAIN_WINDOW = "Tools/Font替换";

    static Font defaultFont_1 = new Font("FZCuYuan");
    static Font defaultFont_2 = new Font("Arial");
    static Font toFont = AssetDatabase.LoadAssetAtPath<Font>("Assets/Font/UTMCafeta.ttf"); 

    [MenuItem(MENU_MAIN_WINDOW)]
    private static void Init()
    {
        List<GameObject> prefabs = new List<GameObject>();
&