加载assetbundle太慢了_unity3d吧_百度贴吧
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加载assetbundle太慢了收藏
我做了一个循环，循环读取很多assetbundle文件，但是只有第一个文件加载很快，后面就在读取数据那一步卡住了，然后很久了，之后的数据就都加载出来了
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为啥加载完第一个，会卡很久，大概有7秒左右，之后的数据就很快的按顺序加载出来了
还没解决啊，不知道什么原因啊
是我描述不够清楚吗
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Unity之Editor（63）
Unity5 AssetBundle打包以及加载
关于AssetBundle 是什么，干什么用，在网上到处是，在此就不过多赘述了。下面直接上代码，如何打包 AssetBundle，打包的AB如何加载。
using UnityE
using System.C
using System.Collections.G
using UnityE
using System.IO;
public class BuildAssetBundle : Editor {
private static string assetPath = "AllAssets";
private static string AssetBundleOutPsth = "Assets/StreamingAssets";
private static List&string& assetPathList = new List&string&();
private static Dictionary&string, string& asExtensionDic = new Dictionary&string, string& ();
[MenuItem("Assets/BuildAssetBundle")]
private static void BuildAssetBundleSource()
assetPathList.Clear ();
SetASExtensionDic();
string outPsth = bine (AssetBundleOutPsth, Plathform.GetPlatformFolder(EditorUserBuildSettings.activeBuildTarget));
GetDirs(Application.dataPath + "/" + assetPath);
BuildAsset (outPsth);
private static void SetASExtensionDic ()
asExtensionDic.Clear ();
asExtensionDic.Add (".prefab", ".unity3d");
asExtensionDic.Add (".mat", ".unity3d");
asExtensionDic.Add (".png", ".unity3d");
private static void GetDirs(string dirPath)
foreach (string path in Directory.GetFiles(dirPath))
if (asExtensionDic.ContainsKey(System.IO.Path.GetExtension(path)))
string pathReplace = "";
if (Application.platform == RuntimePlatform.WindowsEditor)
pathReplace = path.Replace('\\', '/');
assetPathList.Add(pathReplace);
if (Directory.GetDirectories(dirPath).Length & 0)
foreach (string path in Directory.GetDirectories(dirPath))
GetDirs(path);
private static void ClearAssetBundlesName()
int length = AssetDatabase.GetAllAssetBundleNames ().L
Debug.Log (length);
string[] oldAssetBundleNames = new string[length];
for (int i = 0; i & i++)
oldAssetBundleNames[i] = AssetDatabase.GetAllAssetBundleNames()[i];
for (int j = 0; j & oldAssetBundleNames.L j++)
AssetDatabase.RemoveAssetBundleName(oldAssetBundleNames[j],true);
private static void BuildAsset(string outPath)
for (int i = 0; i & assetPathList.C i ++)
string asPath = assetPathList[i];
string path = "";
if (Application.platform == RuntimePlatform.WindowsEditor)
path = asPath.Substring(asPath.IndexOf("Assets/"));
AssetImporter assetImporter = AssetImporter.GetAtPath(path);
if (assetImporter == null)
Debug.LogWarning("null
" + path);
string assetName = asPath.Substring(asPath.IndexOf(assetPath));
assetName = assetName.Replace(Path.GetExtension(assetName), ".unity3d");
assetImporter.assetBundleName = assetN
if (!Directory.Exists (outPath)) {
Directory.CreateDirectory(outPath);
BuildPipeline.BuildAssetBundles (outPath, 0, EditorUserBuildSettings.activeBuildTarget);
AssetDatabase.Refresh ();
public class Plathform
public static string GetPlatformFolder(BuildTarget target)
switch (target)
case BuildTarget.Android:
return "Android";
case BuildTarget.iOS:
return "IOS";
case BuildTarget.WebPlayer:
return "WebPlayer";
case BuildTarget.StandaloneWindows:
case BuildTarget.StandaloneWindows64:
return "Windows";
case BuildTarget.StandaloneOSXIntel:
case BuildTarget.StandaloneOSXIntel64:
case BuildTarget.StandaloneOSXUniversal:
return "OSX";
return null;
操作如下，以项目为例
在Asset下打开面板，选择 BuildAssetBundle
在 StreamingAssets文件夹下生成AB文件
打比完毕，每个资源自动打包出两个文件
打开 1.unity3d 文件如下
上面是一些哈希表对应的数值，这个不需要知道
主要看下面 Assets: 显示该资源的路径以及资源类型
Dependencies：显示该资源依赖的资源路径，可以看到该预设依赖的资源为一个材质资源
、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、
下面是加载，封装了一下加载代码如下
using UnityE
using System.C
using System.Collections.G
using System.IO;
public delegate void CallBack(UnityEngine.Object obj);
public class LoadAssetBundle{
public static readonly LoadAssetBundle Instance = new LoadAssetBundle();
private string path = Application.streamingAssetsP
private Dictionary&string, AssetBundle& assetBundleRefDic = new Dictionary&string, AssetBundle&();
private string GetThePathWithPlathform
if (Application.isEditor)
return "file://" +
public IEnumerator Load(string assetPath, string assetName, Type type, CallBack callBack, bool isUnload)
string loadpath = GetThePathWithP
string url = bine(loadpath, assetPath);
AssetBundle ab = GetASFromUrl (url);
if (ab != null) {
GetObject (ab, assetName, type, callBack, isUnload);
yield return null;
WWW www = WWW.LoadFromCacheOrDownload (url, 0);
yield return
if (!string.IsNullOrEmpty (www.error)) {
Debug.LogError (www.error);
yield return null;
ab = www.assetB
GetObject ( ab, assetName, type, callBack, isUnload);
if (!isUnload)
if (!assetBundleRefDic.ContainsKey(url))
Debug.Log("add");
assetBundleRefDic.Add(url, ab);
private void GetObject(AssetBundle ab, string assetName, Type type, CallBack callBack, bool isUnload)
UnityEngine.Object obj = ab.LoadAsset (assetName, type);
if (callBack != null)
callBack(obj);
if (isUnload) {
ab.Unload (true);
private AssetBundle GetASFromUrl(string url)
AssetBundle ab = null;
if (assetBundleRefDic.TryGetValue (url, out ab)) {
return null;
using UnityE
using System.C
public class Test : MonoBehaviour {
void Update () {
if (Input.GetKeyDown (KeyCode.A))
string loadPath = "Android/allassets/gameobject.unity3d";
string asName = "gameobject";
StartCoroutine(LoadAssetBundle.Instance.Load(loadPath, asName, typeof(GameObject), CallBack, true));
if (Input.GetKeyDown (KeyCode.D))
string loadPath = "Android/allassets/gameobject.unity3d";
string asName = "gameobject";
StartCoroutine(LoadAssetBundle.Instance.Load(loadPath, asName, typeof(GameObject), CallBack, false));
private void CallBack(UnityEngine.Object obj)
Debug.Log (obj.name);
GameObject.Instantiate ((GameObject)obj);
运行项目点击键盘 A 键，将资源加载出来
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