Bug LoadAssetsAsync CANNOT Unpack SpriteSheet (Workaround found)

Hi, So normally,

LoadAssetAsync<Texture2D>("YourSpriteSheetName")

allows to load that image as a Texture2D, but you have no access to the individual sprites you sliced.

LoadAssetAsync<IList<Sprite>>("YourSpriteSheetName")

allows to load a list of sprites directly from an texture2D that has multiple sprites as subobjects. It automatically unpacks all sprites for you.

Problem:
But

LoadAssetsAsync<IList<Sprite>>("LabelSharedByAllSpriteSheets", callback)

does not work.

The scenarios is that I have 30+ sprite sheets sharing the same label and I want to load all of them into memory at the same time. I notice that

LoadAssetAsync<Texture2D>("LabelSharedByAllSpriteSheets", callback)

still works but it is not useful as I cannot access the sliced sprites.

To be specific:

Code (CSharp):

1.       Addressables.LoadAssetsAsync<IList<Sprite>>("LabelSharedByAllSpriteSheets", singleRlt =>
2.       {
3.         var sprites = singleRlt.ToList(); //and then dosomething with the List of sprites
4.       });

gives you a Invalid Key Exception.

My workaround:
Load asset in two steps. First load their locations, and then load the actual sprite, so we can avoid

LoadAssetsAsync

.

Code (CSharp):

1. Addressables.LoadResourceLocationsAsync("LabelSharedByAllSpriteSheets").Completed += h=>
2.       {
3.         var allLocations = h.Result;
4.         foreach (var x in allLocations)
5.         {
6.           Addressables.LoadAssetAsync<IList<Sprite>>(id).Completed += handle =>
7.               {
8.                 if (handle.Status == UnityEngine.ResourceManagement.AsyncOperations.AsyncOperationStatus.Succeeded)
9.                 {
10.                   var sprites = handle.Result.ToList();
11.                   //do something with the list of sprites
12.                 }
13.                 Addressables.Release(handle);
14.               };
15.         }
16.         Addressables.Release(h);
17.       };

Hope that helps.

Also, can someone tell me whether

LoadResourceLocationsAsync 

is deprecated? It seems to be so in older versions of Addressable package but not any more in newer version? I am confused.

 

Thank you for this! Seems like Unity should have done this behind the scenes.