Question by artwen · Nov 19, 2015 at 02:22 PM · sprite spritesheet meta textureimporter metafiles

How to rename individual sprite slice without creating new fileID in meta file using code?

Hi guys, after sliced a sprite sheet, I noticed that if I rename each individual sprite slice manually in Unity, the 'fileIDToRecycleName' session of the meta file for that sprite will stay cool (only name changes, w$$anonymous$$le the fileID remains the same). However, if I do it using code, the 'fileIDToRecycleName' session will expand, reassigning the new name to a new fileID. See below:

 fileIDToRecycleName:
             21300000: name_0
             21300002: name_1
             21300004: name_2
 //if manually rename in unity the above will change to:
 fileIDToRecycleName:
             21300000: newname_0
             21300002: newname_1
             21300004: newname_2
 //if rename in code then:
 fileIDToRecycleName:
             21300000: name_0
             21300002: name_1
             21300004: name_2
             21300006: newname_0
             21300008: newname_1
             21300010: newname_2

My code is like t$$anonymous$$s, similar to line 215-267 of https://github.com/eppz/Unity.Library.eppz_kit/blob/master/Editor/EPPZEditor_SliceRenamer.cs

         ...
         // Locate asset, get meta.
         path = AssetDatabase.GetAssetPath(texture);
         textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
         SpriteMetaData[] sliceMetaData = textureImporter.spritesheet;
 
         // Naming loop.
          for (i...)
         {
             string eachName = ...;
             ...
             sliceMetaData[i].name = eachName; 
         }
 
         // Save settings.
         textureImporter.spritesheet = sliceMetaData;
         EditorUtility.SetDirty(textureImporter);
         textureImporter.SaveAndReimport();
 
         // Reimport/refresh asset.
         AssetDatabase.ImportAsset(path, ImportAssetOptions.ForceUpdate);

Add comment · Show 3

artwen · Nov 19, 2015 at 02:27 PM 0

I try to change line 16 to something like:

         textureImporter.spritesheet[].name = sliceMetaData[].name;

What is the right way of doing this? And will it work?

artwen · Nov 20, 2015 at 03:16 AM 0

Or, is it possible to use Packer.GetAtlasDataForSprite and atlasName variable to rename the slices without creating new fileID?

TDMJ · Mar 14, 2018 at 06:32 AM 0

this can simply change the sliced sprite, but the resources which use the sliced sprite with old name will not change at same time.

Like a prefab A, use sliced sprite named [a_01], but you change it into [a_001],it's will not show the right sliced sprite.

I wonder if there's API work like Sprite Editor, change sliced sprite's name, and click Apply button, and deal with dependencies with Unity itself.

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How to rename individual sprite slice without creating new fileID in meta file using code?

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