Can't get DownloadDependenciesAsync to work

Unity Engine
,
1

Currently have a bunch of Addressable AssetBundles that is available from a remote location that contains a few scenes. I can load the scenes just fine using Addressables.LoadSceneAsync(IResourceLocation) and I see the caching and everything else working as intended.

What I wanted to do now is Download the Dependencies using the same IResourceLocation before I actually switch to the scene and give the user some visual indication. In order to do so I have tried to do Addressables.DownloadDependenciesAsync(IResourceLocation.Dependencies) and then check the progress of that. The process is always immediately finished with the status Succeeded. When I debug the Dependecies I see it contains valid addresseses to the remote location. If I check the Downloadsize before trying to download the Dependecies, then it reports 0.

I have tried clearing the locally cached bundles so that I am sure that I do not have the bundles locally stored. I am even sure of this, as whenever I then try to LoadSceneAsync using the same IResourceLocation, then it actually starts downloading the needed dependencies.

Am I using the Addressables.DownloadDependenciesAsync(IResourceLocation.Dependencies) wrongly? I can’t find any demo samples on the GitHub repository and the docs. seems to indicate that I am doing it right? I am testing from Editor with Using Existing Build option and Addressables 1.8.3

2

You need to call
Addressables.DownloadDependenciesAsync(IResourceLocation) instead because it’s already getting the dependencies of the locations you’re passing. In your case you’re trying to download dependencies of an asset bundle which is not what you need.

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3

I did try that in the start and got

Exception encountered in operation UnityEngine.ResourceManagement.ResourceManager+CompletedOperation`1[System.Collections.Generic.IList`1[UnityEngine.ResourceManagement.ResourceProviders.IAssetBundleResource]], result='', status='Failed': Exception of type 'UnityEngine.AddressableAssets.InvalidKeyException' was thrown.

It does seem to return an actual Download size now, but now the DownloadDependenciesAsync wont work.

4

Solved! Just had to use the IResourceLocation.PrimaryKey when you are using DownloadDependenciesAsync
Thanks a lot for the pointer phobos2077!

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5

Looks like DownloadDependenciesAsync doesn’t have overload that accept single IResourceLocation. Try passing the string key instead or IList

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