StreamからAssetBundleを取得する

LoadAssetbundle.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;

public class LoadAssetbundle : MonoBehaviour {

	void Start () {
		Sprite sprite;
		using (FileStream reader = new FileStream (Application.streamingAssetsPath + "/data", FileMode.Open)) {

			var ab = AssetBundle.LoadFromStream (reader);
			sprite = ab.LoadAsset<Sprite> ("CratePinkGridSprite");

			ab.Unload (false);
		}

		GetComponent<SpriteRenderer> ().sprite = sprite;
	}
}