[Unity工具]批量修改字体

效果图：

using System.IO;
using System.Text;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

/// <summary>
/// 将目标文件夹下所有Prefab的丢失、默认字体的位置输出，并替换成目标字体
/// </summary>
public class BatchModifyFontWindow : EditorWindow {

    Font toFont = new Font("Arial");//目标字体
    string searchFolder = "Assets/Resources/Prefabs";//目标文件夹
    string outputPath = Application.dataPath + "/BatchModifyFont.txt";//输出文件路径
    bool needReplace = false;//是否要进行替换

    [MenuItem("Window/Custom/BatchModifyFontWindow")]
    private static void ShowWindow()
    {
        EditorWindow.GetWindow<BatchModifyFontWindow>(true, "批量修改字体", true);
    }

    void OnGUI()
    {
        EditorGUILayout.LabelField("功能描述：将目标文件夹下所有Prefab的丢失、默认字体的位置输出，并替换成目标字体");

        GUILayout.BeginHorizontal();
        EditorGUILayout.LabelField("目标文件夹为：" + searchFolder);
        if (GUILayout.Button("选择文件夹"))
        {
            string temp = EditorUtility.OpenFolderPanel("请选择目标文件夹", Application.dataPath, "");
            if (!string.IsNullOrEmpty(temp))
            {
                temp = temp.Substring(temp.IndexOf("Assets"));
                searchFolder = temp;
            }
        }
        GUILayout.EndHorizontal();

        EditorGUILayout.LabelField("输出文件路径：" + outputPath);

        GUILayout.BeginHorizontal();
        GUILayout.Label("目标字体为：");
        toFont = (Font)EditorGUILayout.ObjectField(toFont, typeof(Font), true, GUILayout.MinWidth(100f));
        GUILayout.EndHorizontal();

        GUILayout.BeginHorizontal();
        string replaceBtnStr;
        if (needReplace)
        {
            replaceBtnStr = "输出要替换的位置并替换字体";
        }
        else
        {
            replaceBtnStr = "输出要替换的位置";
        }
        if (GUILayout.Button(replaceBtnStr))
        {
            StringBuilder builder = new StringBuilder();
            int counter = 0;
            string[] guids = AssetDatabase.FindAssets("t:Prefab", new string[] { searchFolder });
            for (int i = 0; i < guids.Length; i++)
            {
                string path = AssetDatabase.GUIDToAssetPath(guids[i]);
                //Debug.Log(path);
                EditorUtility.DisplayProgressBar("Hold on", path, (float)(i + 1) / guids.Length);

                bool hasModifyFont = false;
                GameObject go = AssetDatabase.LoadAssetAtPath<GameObject>(path);
                Text[] texts = go.GetComponentsInChildren<Text>(true);
                for (int j = 0; j < texts.Length; j++)
                {
                    Text text = texts[j];
                    string fontName;
                    string log;
                    if (text.font)
                    {
                        fontName = text.font.name;
                    }
                    else
                    {
                        fontName = "Missing";
                    }

                    log = path.Substring(0, path.LastIndexOf("/")) + "/" + GetFontPath(go.transform, text.transform) + fontName;
                    //Debug.Log(log);

                    //对丢失、默认字体进行处理
                    if ((fontName == "Missing") || (fontName == "Arial"))
                    {
                        if (needReplace)
                        {
                            text.font = toFont;
                            hasModifyFont = true;
                        }
                        counter++;
                        builder.Append(log + "\r\n");
                        Debug.Log(log);
                    }
                }

                if (hasModifyFont)
                {
                    EditorUtility.SetDirty(go);
                }
            }

            if (needReplace)
            {
                Debug.Log(string.Format("替换完成。替换了{0}处", counter));
            }
            else
            {
                Debug.Log(string.Format("需要替换{0}处", counter));
            }
            File.WriteAllText(outputPath, builder.ToString());            
            AssetDatabase.Refresh();
            EditorUtility.ClearProgressBar();
        }
        EditorGUILayout.LabelField("替换字体");
        needReplace = EditorGUILayout.Toggle(needReplace);
        GUILayout.EndHorizontal();
    }

    string GetFontPath(Transform parentTra, Transform fontTra)
    {
        string path = "";
        while (parentTra != fontTra)
        {
            path = fontTra.gameObject.name + "/" + path;
            fontTra = fontTra.parent;
        }
        return parentTra.gameObject.name + "/" + path;
    }
}