TextureImporter and sprites

Hello,
I would like to configure a sprite in multiple mode on runtime by this way:

Code (CSharp):

1.  public void ConfigTexture()
2.     {
3.         TextureImporter importer = TextureImporter.GetAtPath("Assets/Resources/idle.png") as TextureImporter;
4.         importer.textureType = TextureImporterType.Advanced;
5.         importer.maxTextureSize = 2048;
6.         importer.textureFormat = TextureImporterFormat.AutomaticTruecolor;
7.         importer.isReadable = true;
8.         importer.filterMode = FilterMode.Bilinear;
9.         importer.npotScale = TextureImporterNPOTScale.None;
10.         importer.wrapMode = TextureWrapMode.Clamp;
11.         importer.mipmapEnabled = false;
12.         importer.spriteImportMode = SpriteImportMode.Multiple;
13.  
14.         UnityEngine.Object asset = AssetDatabase.LoadAssetAtPath(importer.assetPath, typeof(Texture2D));
15.         if (asset)
16.         {
17.             EditorUtility.SetDirty(asset);
18.  
19.         }
20.         else
21.         {
22.             importer.textureType = TextureImporterType.Advanced;
23.         }
24.     }

The problem is, the asset in Resource folder look like Texture2D not a multiple Sprite with left arrow who permit to see sprites. How can I configure an image to a sprite properly in runtime ?
Thank you.

 

I found it!
I added this :

Code (CSharp):

1. AssetDatabase.ImportAsset(importer.assetPath, ImportAssetOptions.ForceUpdate);

complete code if anybody want to use it :

Code (CSharp):

1.     public void ConfigTexture()
2.     {
3.         TextureImporter importer = TextureImporter.GetAtPath("Assets/Resources/idle.png") as TextureImporter;
4.         importer.textureType = TextureImporterType.Advanced;
5.         importer.maxTextureSize = 2048;
6.         importer.textureFormat = TextureImporterFormat.AutomaticTruecolor;
7.         importer.isReadable = true;
8.         importer.filterMode = FilterMode.Bilinear;
9.         importer.npotScale = TextureImporterNPOTScale.None;
10.         importer.wrapMode = TextureWrapMode.Clamp;
11.         importer.mipmapEnabled = false;
12.         importer.spriteImportMode = SpriteImportMode.Multiple;
13.  
14.         UnityEngine.Object asset = AssetDatabase.LoadAssetAtPath(importer.assetPath, typeof(Texture2D));
15.         AssetDatabase.ImportAsset(importer.assetPath, ImportAssetOptions.ForceUpdate);
16.         if (asset)
17.         {
18.             EditorUtility.SetDirty(asset);
19.             Debug.Log("dirty");
20.         }
21.         else
22.         {
23.             importer.textureType = TextureImporterType.Advanced;
24.             Debug.Log("not dirty");
25.         }
26.     }

See ya

 

Hi I have an issue where the importer always comes back null even though the file is in the directory . Any suggestions?

Also can it only run in Unity Editor script? or at normal run time as well?

 

I figured out my issue. I was using the full path to my asset when the path should be relative to your project.