unity3d打包和包的使用

打包：

①Assets下新建文件夹Editor和steamingAssets

②对选定文件打包：

using UnityEngine;
using UnityEditor;
using System.Collections;

public class AssetBundle : MonoBehaviour {
    [MenuItem("Custom Editor/Create AssetBundles Main")]
    static void CreateAssetBundlesMain() {
        Object[] SelectedAsset = Selection.GetFiltered (typeof(Object),SelectionMode.DeepAssets);

        foreach(Object obj in SelectedAsset) {
            string sourcePath = AssetDatabase.GetAssetPath(obj);
            string targetPath = Application.dataPath + "/StreamingAssets" + obj.name +".assetbundle";
            if (BuildPipeline.BuildAssetBundle(obj,null,targetPath,BuildAssetBundleOptions.CollectDependencies)) {
                Debug.Log (obj.name+"success");
            }
            else {
                Debug.Log(obj.name+"failure");
            }
        }
    }
}

从Asset Bundle加载预设：

 using UnityEngine;
 using System.Collections;

 public class loadAB : MonoBehaviour {

     // Use this for initialization
     void Start () {
         StartCoroutine (loadBundle("file://"+Application.streamingAssetsPath+"/"+"StreamingAssetsNew Prefab.assetbundle"));
     }

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

     }
     private IEnumerator loadBundle(string path) {
         WWW load = new WWW (path);
         yield return load;
         GameObject obj = GameObject.Instantiate (load.assetBundle.mainAsset) as GameObject;
         load.assetBundle.Unload (false);
     }
 }