之前已经有几篇文章写打包AssetBundle，但毕竟没有实际在项目中写过都写的比较浅。

刚好最近项目更新Unity5.5.2就顺便由我来更新ui打包流程

这里就把这次的经验写一下

这里还是稍微解释一下打包的基本目的：

打包ui就是把你做的界面打包出来成assetbundle包，讲道理你就把每个界面打成bundle包在游戏中你就可以直接加载来用，但是这样子的话你的每个bundle包就会非常的大，为什么呢，是因为这样子每个界面的bundle包里都包含这个界面用到的字体，贴图atlas，texture，shader还可以有你自己使用的动态组件。

这样子你的同一份资源都复制了很多份出来。

当然不能这样子做

所以我们就需要把这些atlas，font给剥离开来独立打包

不过新的打包方式让我们不用再手动剥离开来这些东西，也就是没有了剥离之后要重新引用的烦恼。

所要做的事就是把需要打包的东西改一改它的AssetBudnle名再一起build就好了

总的来说，就是把一个ui界面的下的atlas，font，texture，component记录下来，

通过修改这个ui.prefab，atlas，font，texture，compoent的预制件的bundle名，最后调一下打包函数就可以了

（有的项目texutre和shader是有自己写的管理类来加载，需要把引用置空的，这时候就需要实例ui.prefab，并把引用赋空，拷贝一份到另外一个文件夹中）

上一篇ui打包文章

http://blog.csdn.net/chrisfxs/article/details/55046339

而这次的流程是

1.清理数据，建立文件夹

2.遍历所有文件夹下的ui界面prefab

3.遍历所有prefab下的compoent（动态组件）

4.找出所有的资源（如atlas，font）用个list记录下来

5.修改这些资源和这个ui.prefab的assetbundle名

6.build

补充一点！

游戏加载assetbundle的时候要先加载atlas，font这些资源，最后加载ui资源

这样才能保证引用没有丢失

下面是代码

//#if UNITY_5_MODE
using UnityEngine;
using UnityEditor;
using System.Collections.Generic;
using UnityEditor.SceneManagement;
using UnityEngine.SceneManagement;
using System.IO;public class BuildAssetbundle
{public static string m_destFileName = "Assetbundle";#if UNITY_ANDROIDpublic static string PlatformExtension = ".android";public static string Extension = ".x.android";public static BuildTarget Target = BuildTarget.Android;public static string ASSETBUNDLE_PATH = Application.dataPath + "/../AndroidResources/StreamingAssets";public static string FULL_ASSETBUNDLE_PATH = ASSETBUNDLE_PATH + "/" + m_destFileName;
#elif UNITY_IOSpublic static string PlatformExtension = ".ios";public static string Extension  = ".x.ios";public static BuildTarget Target = BuildTarget.iOS;public static string ASSETBUNDLE_PATH = Application.dataPath + "/../IosResources/StreamingAssets";
#endif#if BUILD_UI//需要打包的资源public static List<UIFont> fontList = new List<UIFont>();public static List<UIAtlas> atlasList = new List<UIAtlas>();public static List<GameObject> componentList = new List<GameObject>();public static List<GameObject> panelList = new List<GameObject>();public static void BuildOnePanel(){ClearAllBundleName();CleanTempData();GameObject[] selectGameObjects = Selection.gameObjects;UnityEngine.Object selectFloder = Selection.activeObject;if (selectGameObjects != null && selectGameObjects.Length != 0){foreach (GameObject selGb in selectGameObjects){string selGbPath = AssetDatabase.GetAssetPath(selGb);if (selGbPath.StartsWith(BuildUtils.PANEL_ASSET_PATH)){if (selGbPath.EndsWith(BuildUtils.PREFAB_SUFFIX)){GameObject uiInstance = PrefabUtility.InstantiatePrefab(selGb) as GameObject;CheckComponent(uiInstance);FindRefrence(uiInstance.transform);string prefabPath = BuildUtils.TEMP_PANEL_PREFAB_PATH + "/" + uiInstance.name + BuildUtils.PREFAB_SUFFIX;PrefabUtility.CreatePrefab(prefabPath, uiInstance);GameObject prefabAsset = AssetDatabase.LoadAssetAtPath(prefabPath, typeof(GameObject)) as GameObject;panelList.Add(prefabAsset);UnityEngine.Object.DestroyImmediate(uiInstance);}else{Debug.LogWarning("选择的资源 " + selGb.name + " 不是界面Prefab!");}}else{Debug.LogWarning("只能打包放在 " + BuildUtils.PANEL_ASSET_PATH + " 下面的界面Prefab");}}StartBuildGameObjects();BuildUtils.DeleteFileWithSuffixs(ASSETBUNDLE_PATH, new string[]{".manifest",""}, true, false);ShowBundleFolder();EditorUtility.DisplayDialog("提示", "打包完成！", "确定");}else{Debug.LogWarning("只能对 " + BuildUtils.PANEL_ASSET_PATH + " 下面的UI使用！");}}public static void BuildAllPanel(bool hint){ClearAllBundleName();if (!hint || EditorUtility.DisplayDialog("提示", "确定打包 " + BuildUtils.PANEL_ASSET_PATH + " 下所有界面?", "确定", "取消")){CleanTempData();string[] files = Directory.GetFiles(BuildUtils.PANEL_ASSET_PATH);if (files.Length != 0){foreach (string file in files){if (file.EndsWith(BuildUtils.PREFAB_SUFFIX)){GameObject uiInstance = PrefabUtility.InstantiatePrefab(AssetDatabase.LoadAssetAtPath<UnityEngine.Object>(file)) as GameObject;string ui_panel_prefab_name = Path.GetFileNameWithoutExtension(file);CheckComponent(uiInstance);FindRefrence(uiInstance.transform);string prefabPath = BuildUtils.TEMP_PANEL_PREFAB_PATH + "/" + uiInstance.name + BuildUtils.PREFAB_SUFFIX;PrefabUtility.CreatePrefab(prefabPath, uiInstance);GameObject prefabAsset = AssetDatabase.LoadAssetAtPath(prefabPath, typeof(GameObject)) as GameObject;panelList.Add(prefabAsset);UnityEngine.Object.DestroyImmediate(uiInstance);}}StartBuildGameObjects();BuildUtils.DeleteFileWithSuffixs(ASSETBUNDLE_PATH, new string[]{".manifest",""}, true, false);}if (hint){ShowBundleFolder();EditorUtility.DisplayDialog("提示", BuildUtils.PANEL_ASSET_PATH + " 下的界面界面全部打包完成！", "确定");}}}/// <summary>/// 对每一个要打包的Prefab保存组件信息，找出Atlas、Font等///// </summary>/// <param name="com">COM.</param>static void FindRefrence(Transform com){PrefabHierarchyInfo info = com.gameObject.AddComponent<PrefabHierarchyInfo>();info.transforms = com.gameObject.GetComponentsInChildren<Transform>(true);info.myuianchors = com.gameObject.GetComponentsInChildren<MyUIAnchor>(true);UILabel[] uilabels = com.gameObject.GetComponentsInChildren<UILabel>(true);UISprite[] uisprites = com.gameObject.GetComponentsInChildren<UISprite>(true);UITexture[] uitextures = com.gameObject.GetComponentsInChildren<UITexture>(true);foreach (UILabel lab in uilabels){UIFont font = lab.bitmapFont;if (font == null){Debug.LogWarning(com.gameObject.name + " 下出现未使用UIFont或者没有知道字体的UIlabel, " + lab.gameObject.name);continue;}string uifontPath = AssetDatabase.GetAssetPath(font);if (!uifontPath.StartsWith(BuildUtils.UIFONT_PREFAB_PATH))Debug.LogWarning("使用了没有放在" + BuildUtils.UIFONT_PREFAB_PATH + " 目录下的UIFont:" + uifontPath);if (!fontList.Contains(font)){fontList.Add(font);}lab.text = "";}foreach (UISprite sp in uisprites){UIAtlas atlas = sp.atlas;if (atlas == null)continue;string atlasPath = AssetDatabase.GetAssetPath(atlas);if (!atlasPath.StartsWith(BuildUtils.ATLAS_PREFAB_PATH))Debug.LogWarning("使用了未放在" + BuildUtils.ATLAS_PREFAB_PATH + "目录下的Atlas:" + atlasPath);sp.RecordAtlasName = atlas.name;if (!atlasList.Contains(atlas))atlasList.Add(atlas);}foreach (UITexture t in uitextures){t.mainTexture = null;t.shader = null;}com.parent = null;}/// <summary>/// 对找出的需要打包资源打包///// </summary>private static void StartBuildGameObjects(){EditorUtility.UnloadUnusedAssetsImmediate();AssetbundleCommonFun.SetAssetBundlesName<UIFont>(fontList, Extension, false);AssetbundleCommonFun.SetAssetBundlesName<UIAtlas>(atlasList, Extension, false);AssetbundleCommonFun.SetAssetBundlesName<GameObject>(componentList, Extension, false);AssetbundleCommonFun.SetAssetBundlesName<GameObject>(panelList, Extension, false);AssetDatabase.Refresh();BuildAll();CleanTempData();ClearAllBundleName();}//在一次打包过程中，出现过的Component，检测多个Panel里面的（DynamicComponent）重名//static List<string> componentNames = new List<string>();//支持无限深度的Component嵌套static void CheckComponent(GameObject go){string prefabPath = "";Dictionary<uint, List<Transform>> allComponent = new Dictionary<uint, List<Transform>>();FindComponents(go.transform, 0, ref allComponent);uint[] indexs = new uint[allComponent.Keys.Count];allComponent.Keys.CopyTo(indexs, 0);System.Array.Sort(indexs);for (int i = indexs.Length - 1; i >= 0; i--){foreach (Transform com in allComponent[indexs[i]]){FindRefrence(com);prefabPath = BuildUtils.TEMP_COMPONENT_PREFAB_PATH + "/" + com.name + BuildUtils.PREFAB_SUFFIX;PrefabUtility.CreatePrefab(prefabPath, com.gameObject);GameObject prefabAsset = AssetDatabase.LoadAssetAtPath(prefabPath, typeof(GameObject)) as GameObject;componentList.Add(prefabAsset);}}for (int i = indexs.Length - 1; i >= 0; i--){foreach (Transform com in allComponent[indexs[i]]){UnityEngine.Object.DestroyImmediate(com.gameObject);}}}/// <summary>/// 递归寻找动态组件///// </summary>/// <param name="tf">Tf.</param>/// <param name="index">Index.</param>/// <param name="dict">Dict.</param>static void FindComponents(Transform tf, uint index, ref Dictionary<uint, List<Transform>> dict){if (tf.name.Contains("(DynamicComponent)")){foreach (Transform sonTf in tf){if (componentNames.Contains(sonTf.name)){UnityEngine.Debug.LogError(tf.name + " 子物体中出现同名的动态组件 " + sonTf.name);UnityEngine.Object.DestroyImmediate(sonTf);continue;}if (!sonTf.name.Contains("(DynamicComponent)")){componentNames.Add(sonTf.name);if (!dict.ContainsKey(index))dict.Add(index, new List<Transform>());dict[index].Add(sonTf);if (sonTf.childCount > 0)FindComponents(sonTf, index + 1, ref dict);}else{if (sonTf.childCount > 0)FindComponents(sonTf, index + 1, ref dict);}}}else {foreach (Transform sonTf in tf){if (sonTf.childCount > 0)FindComponents(sonTf, index + 1, ref dict);}}}static void CleanTempData(){fontList.Clear();atlasList.Clear();componentList.Clear();componentNames.Clear();}
#endif#region toolsstatic void BuildAll(){EditorUtility.ClearProgressBar();AssetbundleCommonFun.CreatePath(ASSETBUNDLE_PATH + "/Assetbundle");BuildPipeline.BuildAssetBundles(ASSETBUNDLE_PATH + "/Assetbundle", BuildAssetBundleOptions.ChunkBasedCompression, Target);}//[MenuItem("[AssetBundles]/Build Bundles Independent")]static void BuildBundlesIndependent(){List<Object> list = new List<Object>();list.AddRange(Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets));int count = list.Count;string temp_path;List<string> pathList = new List<string>();foreach (Object o in list){if (o == null){continue;}AssetbundleCommonFun.ChangeTextureFormat(o);temp_path = AssetDatabase.GetAssetPath(o);if (!pathList.Contains(temp_path)){pathList.Add(temp_path);}}BuildIndependent(pathList);}static void BuildIndependent(List<string> pathList){string OutPutFolder = ASSETBUNDLE_PATH + "/Assetbundle";AssetbundleCommonFun.CreatePath(OutPutFolder);AssetBundleBuild temp_build;List<AssetBundleBuild> abbs = new List<AssetBundleBuild>();int count = pathList.Count;int index = 0;foreach (string item in pathList){if (item == null){index++;continue;}EditorUtility.DisplayProgressBar("Build Bundles Independent", item, (float)index / (float)count);if (!string.IsNullOrEmpty(item)){temp_build = new AssetBundleBuild();temp_build.assetBundleName = AssetbundleCommonFun.GetBundleName(item, Extension);temp_build.assetNames = new string[] { item };abbs.Add(temp_build);}index++;}BuildPipeline.BuildAssetBundles(OutPutFolder, abbs.ToArray(), BuildAssetBundleOptions.ChunkBasedCompression, Target);string mainConfigPath = OutPutFolder + "/" + Path.GetFileName(OutPutFolder);if (File.Exists(mainConfigPath)){File.Delete(mainConfigPath);}AssetbundleCommonFun.ExportModifyFilesInfo(ASSETBUNDLE_PATH + "/Assetbundle");EditorUtility.ClearProgressBar();EditorUtility.DisplayDialog("提示", "操作结束", "OK");}//[@MenuItem("[AssetBundles]/Set Name for self")]     此功能不开放static void SetNameForSelf(){List<Object> list = new List<Object>();list.AddRange(Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets));int count = list.Count;int index = 0;foreach (Object o in list){if (o == null){index++;continue;}string path = AssetDatabase.GetAssetPath(o);AssetbundleCommonFun.SetBundleName(path, Extension);index++;EditorUtility.DisplayProgressBar("Set Assetbundle Name", path, (float)index / (float)count);}EditorUtility.ClearProgressBar();EditorUtility.DisplayDialog("提示", "操作结束", "OK");}//[@MenuItem("[AssetBundles]/Set Assetbundle Name")]     此功能不开放static void SetName(){List<Object> list = new List<Object>();list.AddRange(Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets));int count = list.Count;int index = 0;foreach (Object o in list){if (o == null){index++;continue;}string path = AssetDatabase.GetAssetPath(o);AssetbundleCommonFun.SetBundleName(path, Extension);index++;EditorUtility.DisplayProgressBar("Set Assetbundle Name", path, (float)index / (float)count);}EditorUtility.ClearProgressBar();//EditorUtility.DisplayDialog("提示", "操作结束", "OK");}//[@MenuItem("[AssetBundles]/Clear Selected AssetbundleName")]static void ClearName(){List<Object> list = new List<Object>();list.AddRange(Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets));int count = list.Count;int index = 0;foreach (Object o in list){if (o == null){index++;continue;}string path = AssetDatabase.GetAssetPath(o);AssetbundleCommonFun.SetBundleName(path, "", true);//AssetbundleCommonFun.SetDependenciesName(path, "", false, true);index++;EditorUtility.DisplayProgressBar("Clear Assetbundle Name", path, (float)index / (float)count);}EditorUtility.ClearProgressBar();//EditorUtility.DisplayDialog("提示", "操作结束", "OK");}//[@MenuItem("[AssetBundles]/Clear All AssetbundleNames")]static void ClearAllBundleName(){string[] allBundleNames = AssetDatabase.GetAllAssetBundleNames();List<string> hasBundleNameAssets = new List<string>();foreach (string n in allBundleNames){foreach (string p in AssetDatabase.GetAssetPathsFromAssetBundle(n)){hasBundleNameAssets.Add(p);}}float idx = 0f;foreach (string asset in hasBundleNameAssets){AssetbundleCommonFun.SetBundleName(asset, "", true);EditorUtility.DisplayProgressBar("清除所有Bundle名称", "当前处理文件:" + Path.GetFileName(asset), idx++ / hasBundleNameAssets.Count);}EditorUtility.ClearProgressBar();AssetDatabase.RemoveUnusedAssetBundleNames();AssetDatabase.Refresh(ImportAssetOptions.ForceUpdate);//EditorUtility.DisplayDialog("提示", "操作结束", "OK");}/// <summary>/// 显示Bundle文件夹///// </summary>static void ShowBundleFolder(){string path = FULL_ASSETBUNDLE_PATH +"/assets";path = path.Replace("/", "\\");Debug.Log(path);System.Diagnostics.Process.Start("explorer.exe", "/select," + path);}#endregion
}
//#endif

using UnityEngine;
using UnityEditor;
using System.IO;
using System.Collections.Generic;
using System.Text;public class AssetbundleCommonFun
{
#if UNITY_ANDROIDprivate static string strLocalFileName = "Android_LocalFilesInfo.asset";
#elif UNITY_IOSprivate static string strLocalFileName = "Ios_LocalFilesInfo.asset";
#endifprivate static List<string> componentList = new List<string>();static AssetImporter m_importer = null;public static void ClearAllBundleName(){string[] allBundleNames = AssetDatabase.GetAllAssetBundleNames();List<string> hasBundleNameAssets = new List<string>();foreach (string n in allBundleNames){foreach (string p in AssetDatabase.GetAssetPathsFromAssetBundle(n)){hasBundleNameAssets.Add(p);}}float idx = 0f;foreach (string asset in hasBundleNameAssets){SetBundleName(asset, "", false);EditorUtility.DisplayProgressBar("清除所有Bundle名称", "当前处理文件:" + Path.GetFileName(asset), idx++ / hasBundleNameAssets.Count);}EditorUtility.ClearProgressBar();AssetDatabase.RemoveUnusedAssetBundleNames();AssetDatabase.Refresh(ImportAssetOptions.ForceUpdate);}public static void CreatePath(string path){string NewPath = path.Replace("\\", "/");string[] strs = NewPath.Split('/');string p = "";for (int i = 0; i < strs.Length; ++i){p += strs[i];if (i != strs.Length - 1){p += "/";}if (!Path.HasExtension(p)){if (!Directory.Exists(p))Directory.CreateDirectory(p);}}}public static string SetBundleName(string path, string name, bool isForce = false){if (!isForce){if (Directory.Exists(path)){return null;}}string dictName = Path.GetDirectoryName(path);string fileName = Path.GetFileNameWithoutExtension(path);string extension = Path.GetExtension(path);dictName = dictName.Replace("UIResources_temp", "UIResources");if (!isForce){if (extension.Equals(".dll") || extension.Equals(".cs") || extension.Equals(".js") || (name != "" && fileName.Contains("atlas") && !extension.Equals(".prefab"))){return null;}}m_importer = AssetImporter.GetAtPath(path);if (name != ""){m_importer.assetBundleName = dictName + "/" + fileName + name;}else{m_importer.assetBundleName = "";}AssetDatabase.Refresh();return m_importer.assetBundleName;}public static string GetBundleName(string path, string name, bool isForce = false){string retBundleName = null;if (!isForce){if (Directory.Exists(path)){return retBundleName;}}string dictName = Path.GetDirectoryName(path);string fileName = Path.GetFileNameWithoutExtension(path);string extension = Path.GetExtension(path);if (!isForce){if (extension.Equals(".dll") || extension.Equals(".cs") || extension.Equals(".js") || (name != "" && fileName.Contains("atlas") && !extension.Equals(".prefab"))){return null;}}if (name != ""){retBundleName = dictName + "/" + fileName + name;//Object tex = AssetDatabase.LoadAssetAtPath(path, typeof(Object));//if (tex is Texture2D)//{//    SetTexture(tex as Texture2D);//}}Debug.Log("Asset name: " + fileName);AssetDatabase.Refresh();return retBundleName;}static void FindComponents(Transform tf, uint index, ref Dictionary<uint, List<Transform>> dict){if (tf.name.Contains("(DynamicComponent)")){foreach (Transform sonTf in tf){if (componentList.Contains(sonTf.name)){Debug.LogWarning("same name component...");UnityEngine.Object.DestroyImmediate(sonTf);continue;}if (!sonTf.name.Contains("(DynamicComponent)")){Debug.Log("找到组件" + sonTf.name + "深度" + index);componentList.Add(sonTf.name);if (!dict.ContainsKey(index))dict.Add(index, new List<Transform>());dict[index].Add(sonTf);if (sonTf.childCount > 0)FindComponents(sonTf, index + 1, ref dict);}else{if (sonTf.childCount > 0)FindComponents(sonTf, index + 1, ref dict);}}}else{foreach (Transform sonTf in tf){if (sonTf.childCount > 0)FindComponents(sonTf, index + 1, ref dict);}}}public static void SetTexture(Texture2D tex){string path = AssetDatabase.GetAssetPath(tex);TextureImporter importer = AssetImporter.GetAtPath(path) as TextureImporter;if (importer != null){if (!(importer.textureType == TextureImporterType.NormalMap || importer.normalmap))importer.mipmapEnabled = false;importer.npotScale = TextureImporterNPOTScale.ToNearest;importer.textureType = TextureImporterType.Default;importer.spriteImportMode = SpriteImportMode.None;importer.isReadable = false;if (path.Contains("_alpha8")){importer.textureFormat = TextureImporterFormat.Alpha8;}else{importer.textureFormat = SetTextureFormat(tex, importer);}importer.maxTextureSize = 8192;AssetDatabase.ImportAsset(path);}}static TextureImporterFormat SetTextureFormat(Texture t, TextureImporter importer){TextureImporterFormat TextureFormat;
#if UNITY_IPHONEif (fun(t.width) && fun(t.height)){if (importer.DoesSourceTextureHaveAlpha()){TextureFormat = TextureImporterFormat.PVRTC_RGBA4;}else{TextureFormat = TextureImporterFormat.PVRTC_RGB4;}}else{TextureFormat = TextureImporterFormat.ETC2_RGBA8;}#elif UNITY_ANDROIDif (fun(t.width) && fun(t.height)){if (importer.DoesSourceTextureHaveAlpha()){//importer.alphaIsTransparency = true;TextureFormat = TextureImporterFormat.ETC2_RGBA8;}elseTextureFormat = TextureImporterFormat.ETC_RGB4;}else {if (importer.DoesSourceTextureHaveAlpha()){//importer.alphaIsTransparency = true;TextureFormat = TextureImporterFormat.RGBA16;}elseTextureFormat = TextureImporterFormat.RGB16;Debug.LogWarning("Texture " + t.name + " 尺寸不为2的幂次方，无法使用ETC压缩,当前使用 " + TextureFormat.ToString());}
#elseTextureFormat = TextureImporterFormat.RGBA32;
#endifreturn TextureFormat;}static bool fun(int v){bool flag = false;if ((v > 0) && (v & (v - 1)) == 0)flag = true;return flag;}public static void ExportModifyFilesInfo(string path){string extension = "";string[] retFils = Directory.GetFiles(path, "*.manifest", SearchOption.AllDirectories);//LocalFilesInfo filesInfo = ScriptableObject.CreateInstance<LocalFilesInfo>();foreach (var item in retFils){File.Delete(item);}}private static void FileCopy(string sourceFileName, string destFileName){string dictName = Path.GetDirectoryName(destFileName);CreatePath(dictName);File.Copy(sourceFileName, destFileName);}private static string GetMD5HashFromFile(string fileName){try{FileStream file = new FileStream(fileName, FileMode.Open);System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();byte[] retVal = md5.ComputeHash(file);file.Close();StringBuilder sb = new StringBuilder();for (int i = 0; i < retVal.Length; i++){sb.Append(retVal[i].ToString("x2"));}return sb.ToString();}catch (System.Exception ex){throw new System.Exception("GetMD5HashFromFile() fail, error:" + ex.Message);}}public static void ChangeTextureFormat(Object obj){Object[] dependObjects;dependObjects = EditorUtility.CollectDependencies(new Object[] { obj });foreach (Object val in dependObjects){if (val is Texture2D){SetTexture(val as Texture2D);}}AssetDatabase.Refresh();}public static void SetAssetBundlesName<T>(List<T> list, string Extension, bool needRefresh) where T : Object{for (int i = 0; i < list.Count; i++){SetAssetBundleName(list[i], Extension, needRefresh);}}public static void SetAssetBundleName<T>(T asset, string Extension, bool needRefresh) where T : Object{string path = AssetDatabase.GetAssetPath(asset);SetBundleName(path, Extension, needRefresh);}
}