BuildAssetBundlesTool

using UnityEngine;
using UnityEditor;
using System.IO;

public class BuildAssetBundlesTool
{
    static string targetDir = Application.dataPath + "/MyBundles";//AssetBundle的目录名
    static string extensionName = ".assetbundle";//AssetBundle的扩展名
    static Object[] selection = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

    [MenuItem("Private Menu/Build Every")]
    static void ExportAssetBundles()
    {
        if (!Directory.Exists(targetDir))
            Directory.CreateDirectory(targetDir);
        for (int i = 0; i < selection.Length; i++)
        {
            string targetPath = targetDir + Path.AltDirectorySeparatorChar + selection[i].name + extensionName; // AssetBundle 存储路径
            if (File.Exists(targetPath))
                File.Delete(targetPath);
            //确保选中要打包的是【GameObject】,【Texture2D】,【Material】,【TextAsset】
            //----如果没有此选项，那么打包的时候可以打包选中的任意类型，包括已经打包好的资源包。
            if (!(selection[i] is TextAsset) && !(selection[i] is GameObject) && !(selection[i] is Texture2D) && !(selection[i] is Material))
                continue;
            if (BuildPipeline.BuildAssetBundle(selection[i], null, targetPath))//, BuildAssetBundleOptions.CollectDependencies | BuildAssetBundleOptions.CompleteAssets))
            {
                Debug.Log(selection[i].name + "：OK~");
                AssetDatabase.Refresh();
            }
        }
    }
    [MenuItem("Private Menu/Build Single")]
    static void ExportResource()
    {
        if (!Directory.Exists(targetDir))
            Directory.CreateDirectory(targetDir);
        string targetPath = targetDir + Path.AltDirectorySeparatorChar + "Bundles" + extensionName;
        if (File.Exists(targetPath))
            File.Delete(targetPath);
        if (BuildPipeline.BuildAssetBundle(Selection.activeObject, selection, targetPath, BuildAssetBundleOptions.CollectDependencies | BuildAssetBundleOptions.CompleteAssets))
        {
            Debug.Log("OK~");
        }
    }
}