Unity导出AssetBundle到指定路径

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

 /// <summary>
 /// 把工程中设置了AssetBundle Name的资源打包成.unity3d 到StreamingAssets目录下
 /// </summary>
 public class ExportAssetBundle : EditorWindow
 {
     // public static string sourcePath = Application.dataPath + "/Resources";
     private string OutputPath = "Assets/StreamingAssets";

     [MenuItem("AssetsManager/导出所有AssetBundle")]
     static void AddWindow()
     {
         //创建窗口
         ExportAssetBundle window = (ExportAssetBundle)EditorWindow.GetWindowWithRect(typeof(ExportAssetBundle),new Rect(Screen.width/,Screen.height/,,), true, "导出AssetBundle");
         window.Show();

     }

     void OnGUI()
     {
         EditorGUILayout.BeginHorizontal();
         GUILayout.Label("导出路径:");
         OutputPath = EditorGUILayout.TextField(OutputPath);
         if (GUILayout.Button("浏览"))
         {
             //EditorApplication.delayCall += OpenFolder;
             OutputPath = EditorUtility.OpenFolderPanel("选择要导出的路径", "", "");
         }
         EditorGUILayout.EndHorizontal();
         if (GUILayout.Button("打包",GUILayout.MinHeight()))
         {
             BuildAssetBundle();
             this.Close();
         }
     }

     public void BuildAssetBundle()
     {
         string outputPath = Path.Combine(OutputPath, Platform.GetPlatformFolder(EditorUserBuildSettings.activeBuildTarget));
         if (!Directory.Exists(outputPath))
         {
             Directory.CreateDirectory(outputPath);
         }

         //根据BuildSetting里面所激活的平台进行打包
         BuildPipeline.BuildAssetBundles(outputPath, , EditorUserBuildSettings.activeBuildTarget);

         AssetDatabase.Refresh();

         Debug.Log("打包完成");

     }
 }

 public class Platform
 {
     public static string GetPlatformFolder(BuildTarget target)
     {
         switch (target)
         {
             case BuildTarget.Android:
                 return "Android";
             case BuildTarget.iOS:
                 return "IOS";
             case BuildTarget.WebGL:
                 return "WebGL";
             case BuildTarget.StandaloneWindows:
             case BuildTarget.StandaloneWindows64:
                 return "Windows";
             case BuildTarget.StandaloneOSXIntel:
             case BuildTarget.StandaloneOSXIntel64:
             case BuildTarget.StandaloneOSXUniversal:
                 return "OSX";
             default:
                 return null;
         }
     }
 }