How to programmatically change name of sub-assets

Question

I am trying to change the name of the sub-sprites of a sprite sheet. I have searched and tried everything I can think of and cannot get it to work, which makes me think it can't be done at this point in time.

Let's say I have a sprite sheet that has already been split up into individual sprites inside of Unity. Sub-sprite assets contained within Sprite sheet asset

I am attempting to change the sub-sprite names programmatically.

I tried using

 AssetDatabase.RenameAsset (...)

on the sprite sheet asset, which only changes the sprite sheet name and not sub-sprites.

I then obtained a sub-sprite and attempted to change its name using the below code.

             if (AssetDatabase.IsSubAsset (subSprite))
             {
                 AssetDatabase.RenameAsset (AssetDatabase.GetAssetPath (subSprite), "newSprite" + i.ToString ());
             }

However, this too only changes the sprite sheet name.

Renamed sprite sheet

I'm not sure where else I can take this to achieve my desired outcome, apart from programmatically copying the original sprite sheet and using that to create a copy. But even then, I still am unable to alter the sub-sprite names.

I also tried changing subSprite.name, but this just changes the internal name and not the asset name.

Any ideas?

Answer 1

Answer by Carl-Gran · Apr 13, 2016 at 11:47 AM

try:

    AssetDatabase.ClearLabels(item);
    item.name = newName;
    AssetDatabase.SetLabels(item, new string[]{newName});
    AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(item));

Where item is the object reference of your sub asset.

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TDMJ · Mar 14, 2018 at 07:15 AM 0

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friend, it not work

PineTreeDev · Jan 18 at 12:02 PM 0

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If anyone stumbles across this old thread, this solution is working in unity 2020-2021 as far as I know, a lot simpler than the previous solution if you're working with Scriptable Objects with a lot of sub assets.

Answer 2

Answer by ParkyRander · Aug 21, 2018 at 01:17 PM

             string path = AssetDatabase.GetAssetPath(mainAsset);
             UnityEngine.Object[] assets = AssetDatabase.LoadAllAssetsAtPath(path);
             string prefix = string.Format("{0}_", mainAsset.name);
 
             for(int i = 0; i < assets.Length; i++)
             {
                 if (AssetDatabase.IsSubAsset(assets[i]))
                 {
                     if (assets[i].name.StartsWith(prefix) == false)
                     {
                         assets[i].name = prefix + assets[i].name;
                         EditorUtility.SetDirty(assets[i]);
                     }
                 }
             }
             EditorUtility.SetDirty(mainAsset);
             AssetDatabase.ImportAsset(path);

This worked for me, so long as you have access to the mainAsset.

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How to programmatically change name of sub-assets

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