How I can test AssetBundle (DLC) locally on Android in Unity?

Question

I'm trying to test some AssetBundles for the game that I'm currently working on. I want to use this because I don't want the game to take a lot of space. I still don't know how servers work and how to upload them over there. I was searching on how to do this and found some neat stuff over here: AssetBundle (DLC) data load to Android phone at runtime [UNITY] But it tells something about uploading to a server and stuff, but I want to test it locally. Any recommendation?

Following what Remy told me, my code looks like this:

public class LoadFromFileExample : MonoBehaviour {

// Use this for initialization
void Start () {

    string fileName = "planes";
    var myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, fileName));
    if (myLoadedAssetBundle == null)
    {
        Debug.Log("Failed to load AssetBundle!");
        return;
    }
    var prefab = myLoadedAssetBundle.LoadAsset< GameObject > ("andy");
    Instantiate(prefab);

    myLoadedAssetBundle.Unload(false);

}

// Update is called once per frame
void Update () {

}
}

But it shows the following error: Unable to open archive file: C:/Users/Chris/Desktop/myDLC/Assets/StreamingAssets/myassetBundle

This is the asset bundle name

Remy Remy · Accepted Answer · 2019-02-14T12:12:47

Take a look at AssetBundle.LoadFromFile.

This allows you to load in your assetbundle file from the local storage of the device. Meaning you don't have to upload/download them first.

it will look something like the following:

string fileName = "fooAssetBundle";//name of the assetbundle you want to load

var myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, fileName));//Creates a filepath starting at the streamingAssetsPath and appends filename to it. 

var prefab = myLoadedAssetBundle.LoadAsset<GameObject>("MyObject");//Create a GameObject from the assetbundle
Instantiate(prefab);//instantiate the GameObject

myLoadedAssetBundle.Unload(false);//Unload the assetbundle from memory as it isn't used anymore

The above example uses the Application.StreamingAssetsPath but this can be any path your desire like Application.PersistentDataPath or an external storage.

How I can test AssetBundle (DLC) locally on Android in Unity?

1 Answers