最近写了个替换系统图片资源的工具，拖拽项目内图片资源路径文件夹，会生成显示图片缩略图和名字的item，在右侧把需要替换的图片拖进来点击确定就可以了，主要是省了重命名这一步

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.IO;
public Class MyItem
{public string name;public Texture2D image;public Texture2D draggedTex;public string draggedTexName;public string path;public MyItem(){name = "";image = null;draggedTex = null;}
}
public class ImageReplace: EditorWindow
{[MenuItem("Window/ImageReplace")]public static void OpenWindow(){var win = GetWindom(ImageReplace)();win.titleContent = new GUIContent("Image Place");win.Show();}private List<MyItem> items = new List<MyItem>();private string folderPath;private Vector2 ScrollPosition; void OnGUI(){GUILayout.Label("Drop an Image file here", EditorStyles.boldLabel);Event currentEvent = Event.current;Rect dropArea = GUILayoutUtility.GetRect(GUIContent.none, GUIStyle.none, GUILayout.ExpandWidth(true), GUILayout.ExpandHeight(true));switch (currentEvent.type){case EventType.DragUpdated:case EventType.DragPerform:if (!dropArea.Contains(currentEvent.mousePosition))break;DragAndDrop.visualMode = DragAndDropVisualMode.Copy;if (currentEvent.type == EventType.DragPerform){DragAndDrop.AcceptDrag();foreach (var path in DragAndDrop.paths){if(File.GetAttributes(path).HasFlag(FileAttributes.Directory)){var allFiles = Directory.GetFiles(path,"*.*",SearchOption.AllDirectories);{foreach(var file in allFiles){if(Path.GetExtension(file) == ".png" || Path.GetExtension(file) == ".jng" ){CreateItem(file);}}}}else{if(Path.GetExtension(file) == ".png" || Path.GetExtension(file) == ".jng" ){CreateItem(file);}}}}Event.current.Use();break;}GUILayout.Space(10);scrollPosition = GUILayout.BeginScrollView(scrollPosition);foreach (var item in items){GUILayout.BeginHorizontal();GUILayout.Label(item.name,GUILayout.Width(200));GUILayout.Box(item.image,GUILayout.Width(100),GUILayout.Height(100));GUIStyle style = new GUIStyle();style.normal.textColor = Color.white;Rect dropArea2 = GUILayoutUtility.GetRect(GUIContent.none, GUIStyle.none, GUILayout.Width(100),GUILayout.Height(100));Event dropEvent = Event.current;switch (dropEvent .type){case EventType.DragUpdated:case EventType.DragPerform:if (!dropArea.Contains(dropEvent .mousePosition))break;DragAndDrop.visualMode = DragAndDropVisualMode.Copy;if (currentEvent.type == EventType.DragPerform){DragAndDrop.AcceptDrag();foreach (var path in DragAndDrop.paths){if(Path.GetExtension(file) == ".png" || Path.GetExtension(file) == ".jng" ){Texture2D tex = new Texture2D (2,2);tex.LoadImage(File.ReadAllBytes(path));item.draggedTex = tex;item.draggedTexName =Path.GetFileName(path);}}}dropEvent .Use();break;}GUILayout.Box(item.draggedTex,GUILayout.Width(100),GUILayout.Height(100));GUILayout.EndHorizontal();}GUILayout.EndScrollView();GUILayout.Space(10);GUILayout.BeginHorizontal();if(GUILayout.Button("确定")){ApplyChanges();}if(GUILayout.Button("清除")){ClearItems();}GUILayout.EndHorizontal();}private void CreateItem(string file){MyItem newItem = new MyItem{name = Path.GetFileName(file);path = file;image = AssetDatabase.LoadAssetAtPath<Texture2D>(file);}items.Add(newItem);}private void ApplyChanges(){foreach (var item in items){if(item.draggedTex){byte[] imgBytes = item.draggedTex.EncodeToPNG();File.WriteAllBytes(item.path,imgBytes );}}Debug.Log("Finish");}private void ClearItems(){items.Clear();}
}