Async Await on Android not working

I am trying to use async await from c# .net. It works fine in the editor but when I build it no longer work. It doesn't break but the code doesn't runs async

Code (CSharp):

1.  
2. private async Task LoadModelAsync(string bundleName)
3. {
4.     int versionToCheck = (versions.ContainsKey(bundleName)) ? versions[bundleName] : 0;
5.     string path = "";
6.  
7. #if UNITY_IOS
8.     path = "https://" + SERVER_URL + "/iOS/" + bundleName;
9. #elif UNITY_ANDROID
10.     path = "https://" + SERVER_URL + "/Android/" + bundleName;
11. #endif
12.  
13.     Debug.Log("Path: " + path);
14.  
15.     UnityWebRequest www = new UnityWebRequest(path);
16.     www.downloadHandler = new DownloadHandlerBuffer();
17.     await www.SendWebRequest();
18.  
19.     Debug.Log(www.isNetworkError);
20.     Debug.Log(www.isHttpError);
21.     Debug.Log(www.isDone);
22.  
23.     Debug.Log(www.downloadHandler);
24.     Debug.Log(www.downloadHandler.data);
25.  
26.     AssetBundle assetBundle =
27. AssetBundle.LoadFromMemoryAsync(www.downloadHandler.data).assetBundle;
28.     loadedBundles.Add(assetBundle);
29.  
30.     // return bundle
31.     if (OnBundleLoaded != null) OnBundleLoaded(assetBundle);
32.     Debug.Log("Download complete and added to list");
33. }

 

Any reason you're not just using coroutines? They work all day long for UnityWebRequest processing, whereas this newfangled

async

crud seems to show up in a lot of "this doesn't work" questions here on the forum.

You know, the basic "when in Rome" type approach.

Also, remember to respect the

IDisposable

interface of the UnityWebRequest objects and properly

.Dispose()

your stuff when done, otherwise you could leak resources on certain targets.

 

Hard to say without the full code, but it looks like you got a "LoadFromMemoryAsync" async method which is never awaited

 

Unless we've messed something up, the same appears to be true of iOS.
The C# async are a bit weird, but they're also incredibly useful and used by a lot of 3rd party APIs. They're well worth understanding.

 

`AssetBundle.LoadFromMemoryAsync` returns a other async op, you will need to await it as well