using UnityEngine;using UnityEditor;public class TestExportSprite{        [MenuItem("Assets/导出选中图片为单独png")]    static void ExportSelSprite()    {        string resourcesPath = "Assets/Resources/";        foreach (Object obj in Selection.objects)        {            string selectionPath = AssetDatabase.GetAssetPath(obj);            // 必须最上级是"Assets/Resources/"            if (selectionPath.StartsWith(resourcesPath))            {                string selectionExt = System.IO.Path.GetExtension(selectionPath);                if (selectionExt.Length == 0)                {                    continue;                }                // 得到导出路径                string loadPath = selectionPath.Remove(selectionPath.Length - selectionExt.Length);                loadPath = loadPath.Substring(resourcesPath.Length);                // 加载此文件下的所有资源                Sprite[] sprites = Resources.LoadAll<Sprite>(loadPath);                if (sprites.Length > 0)                {                    // 创建导出文件夹                    string outPath = Application.dataPath + "/outSprite/" + loadPath;                    System.IO.Directory.CreateDirectory(outPath);                    foreach (Sprite sprite in sprites)                    {                        // 创建单独的纹理                        Texture2D tex = new Texture2D((int)sprite.rect.width, (int)sprite.rect.height, sprite.texture.format, false);                        tex.SetPixels(sprite.texture.GetPixels((int)sprite.rect.xMin, (int)sprite.rect.yMin,                            (int)sprite.rect.width, (int)sprite.rect.height));                        tex.Apply();                        // 写入成PNG文件                        System.IO.File.WriteAllBytes(outPath + "/" + sprite.name + ".png", tex.EncodeToPNG());                    }                    Debug.Log(string.Format("Export {0} to {1}",loadPath,outPath));                }            }        }        Debug.Log("Export All Sprites Finished");    }}

UnityException: Texture ‘UIAtlas‘ is not readable, the texture memory can not be accessed from scripts. You can make the texture readable in the Texture Import Settings.UnityEngine.Texture2D.GetPixels (Int32 x, Int32 y, Int32 blockWidth, Int32 blockHeight) (at C:/BuildAgent/work/aeedb04a1292f85a/artifacts/EditorGenerated/TextureBindings.cs:259)TestSaveSprite.SaveSprite () (at Assets/Editor/TestSaveSprite.cs:39)