LoadResourceLocationsAsync vs InstantiateAsync

Unity Engine
1

Update: This was a thread problem:
I am having a hard time getting the labels to work with Addressables. I think I have a misunderstanding of what should be happening. If I use the “address” directly it works fine:

    string prefab = "Assets/MyPrefab.prefab";
    Addressables.InstantiateAsync(prefab , position, Quaternion.identity, this.transform).Completed += InstantiateTile_Completed;

Likewise, if I use a label with InstantiateAsync, it works.

    string label = "1010";
    Addressables.InstantiateAsync(label, position, Quaternion.identity, this.transform).Completed += InstantiateTile_Completed;

Now, my understanding was that Addressables.LoadResourceLocationsAsync would provide me a list of “address” that I can then pass into InstantiateAsync. So, under the constraint that I only have one prefab / addressable with the label “1010” the following should be equivalent:

        List<string> labels = new List<string>();
        labels.Add("1010");
        var handle = Addressables.LoadResourceLocationsAsync(labels.ToArray(), Addressables.MergeMode.UseFirst);
        handle.Task.Wait(); // hangs
        var go = handle.Result[0];
        Addressables.InstantiateAsync(go, position, Quaternion.identity, this.transform).Completed += InstantiateTile_Completed;

But that hangs and never returns.

Update: This was a misunderstanding of the Aync stuff. Not sure why, but changing to the following works:

        private async Task LoadAddresses()
        {
            possibleAddressableAssets = await Addressables.LoadResourceLocationsAsync(addressableLabels, Addressables.MergeMode.UseFirst).Task;
            //asyncLoadHandle = Addressables.LoadResourceLocationsAsync(addressableLabels, Addressables.MergeMode.Intersection, typeof(GameObject));
            //asyncLoadHandle.Task.Wait(100);
        }
...
            await LoadAddresses();
        var go = possibeAddressableAssets[0];
        Addressables.InstantiateAsync(go, position, Quaternion.identity, this.transform).Completed += InstantiateTile_Completed;
2

It hangs because you are telling the main thread to wait on something that will actually happen later in the frame on the main thread. Await yields, Task.Wait is a blocking wait.

3

Great. Thanks @AlkisFortuneFish . I have gotten behind on the C# features added since 3.0. I assumed a name with Async already was running. Just got up to speed on the async and await language features.