How to check whether or not the requested assetbundle is loaded/cached already

Hey there,

i currently dont know how to prevent the error "The AssetBundle 'pathToAssetBundle/bundle can't be loaded because another AssetBundle with the same files is already loaded.".

Im using the following routine everytime i need to access a videoclip out of this bundle:

Code (CSharp):

1. UnityWebRequest www = UnityWebRequest.GetAssetBundle(bundleURL, 0, 1983471844);
2.  
3.         // wait for load to finish
4.         yield return www.Send();
5.  
6.         if (www.error != null)
7.         {
8.             Debug.LogError("www error: " + www.error);
9.             www.Dispose();
10.             www = null;
11.             yield break;
12.         }
13.  
14.         // get bundle from downloadhandler
15.         bundle = ((DownloadHandlerAssetBundle)www.downloadHandler).assetBundle;

"1983471844" is the CRC number out of the bundle.manifest file and i tried to use something like:

Code (CSharp):

1. if (!Caching.IsVersionCached("bundle", Hash128.Parse("1983471844")))
2.         {
3.             Debug.Log("AssetBundle not yet cached");
4.             StartCoroutine(LoadAssetBundleCoroutine("pathtoAssetBundle/bundle"));
5.             return;
6.         }

But that always returns false and doesnt seem to work.
What exactly am i doing wrong or is there another better way of doing so?

 

when you have equals filename in different ABs for example:
example.com/bundle1 which contains file my.txt
example.com/bundle2 which contains file my.txt
my.txt already exist in bundle1, and you take a error on loading bundle2

also you need 'using' around request, example:

Code (CSharp):

1.  
2. using (UnityWebRequest www = UnityWebRequest.GetAssetBundle(bundleURL, 0, 1983471844))
3. {
4.         // wait for load to finish
5.         yield return www.Send();
6.         if (www.error != null)
7.         {
8.             Debug.LogError("www error: " + www.error);
9.             yield break;
10.         }
11.         // get bundle from downloadhandler
12.         bundle = ((DownloadHandlerAssetBundle)www.downloadHandler).assetBundle;
13. }
14.  

also you don't need
if (!Caching.IsVersionCached
becouse of build-in caching inside UnityWebRequest.GetAssetBundle

also the error may occur if you load same AssetBundle many times, in that case you need to load 1 time, and other times not to reload, but use exist reference to bundle; or bundle.Unload before reload

 

That doesnt work. Same error.