UnityWebRequest로 에셋번들을 비동기 방식으로 로드하는 코드

LoadAssetBundlesFromUnityWebRequestAsync.cs

using System.Collections;
using UnityEngine;
using UnityEngine.Networking;

public class LoadAssetBundlesFromUnityWebRequestAsync : MonoBehaviour {

	// Use this for initialization
	void Start () {
        StartCoroutine(LoadAssetBundleAsync());
	}
	
    IEnumerator LoadAssetBundleAsync()
    {
        string uri = "file:///" + Application.dataPath + "/AssetBundles/bundle";
        UnityWebRequest request = UnityWebRequest.GetAssetBundle(uri);

        yield return request.SendWebRequest();

        AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(request);
        AssetBundleRequest bundleRequest = bundle.LoadAssetAsync<GameObject>("Stone");

        yield return bundleRequest;

        var prefab = bundleRequest.asset;
        Instantiate(prefab);

        bundleRequest = bundle.LoadAssetAsync<GameObject>("Brick");

        yield return bundleRequest;

        prefab = bundleRequest.asset;
        Instantiate(prefab);
    }
}