unity自定义创建资源包（代码片段）

using UnityEngine;
using System.Collections;
using UnityEditor;
using System.IO;

public class CreateAssetBundles : MonoBehaviour {
    [MenuItem("自定义资源包/创建资源包")]
    static void ExecuteCreateAssetBundles()
    {
        //设置保存资源包的根路径;
        string targetDir = Application.dataPath + "/AssetBundles";
        Object[] selectedAssets = Selection.GetFiltered(typeof(Object),SelectionMode.DeepAssets);
        if (!Directory.Exists(targetDir))
        {
            Directory.CreateDirectory(targetDir);
        }

        for (int i = 0; i < selectedAssets.Length; i++)
        {
            string filePath = targetDir + "/" + selectedAssets[i].name + ".unity3d";

            if (File.Exists(filePath))
            {
                File.Delete(filePath);
            }

            //生成新的资源包文件
            if (BuildPipeline.BuildAssetBundle(selectedAssets[i], null, filePath, BuildAssetBundleOptions.CollectDependencies))
            {
                //表示资源包文件生成成功;
                Debug.Log("资源包文件生成成功");
                //直接刷新Project视图，查看资源；
                AssetDatabase.Refresh();
            }
            else {
                //表示资源包文件生成失败;
                Debug.Log("资源包文件生成失败");
            }
        }
    }
}