[程式] 關於Unity的AssetBundle

[lovecold (小豬頭)]

各位前輩好，小弟弟我目前正在學著使用Unity的AssetBundle來做android的obb檔

但碰到一個小問題，希望各位前輩能指點指點....

我照著Unity提供的GooglePlayDownloader的說明來產生obb檔

1) Create one or many AssetBundles with the application data
   (enough to get the .apk below the 50MB limit).
2) Concatenate the generated AssetBundles into a single .obb
   by ZIP'ing them, using STORE (not DEFLATE).
   $> zip -0 main.obb assetbundles
3) Continue to use WWW.LoadFromCacheOrDownload()
   as with regular asset bundle loading, but use the path
   to the .obb instead, like this:
   WWW.LoadFromCacheOrDownload("jar:file://" +
                               obbPath +
                               "!/" + originalAssetBundleName);

在第二步驟時，我把三個assetbundle壓縮成一個main.obb檔，

這三個assetbundle分別是
RedCube.assetbundles,
GreenCube.assetBundles,
BuleCube.assetBundles

但在第三步驟時出現問題，

當我在Editor測試時，使用

string obbPath = "jar:file://"+
                 Application.dataPath +
                 "/../_AssetBunldes/main.obb!/RedCube.assetBundles";
WWW bundle = WWW.LoadFromCacheOrDownload(obbPath, 0);
Debug.Log(bundle.assetBundle);

會出現下方的錯誤

You are trying to load data from a www stream
which had the following error when downloading.
Resolving host timed out: jar:file:
UnityEngine.WWW:get_assetBundle()
<loadBundle>c__Iterator0:MoveNext() (at Assets/DownloadObbExample.cs:62)

當我在機器上測試時，我把路徑改成，

string mainPath = GooglePlayDownloader.GetMainOBBPath(expPath);
string obbPath = "jar:file://"+ mainPath + "!/RedCube.assetBundles";
WWW bundle = WWW.LoadFromCacheOrDownload(obbPath, 0);
Debug.Log(bundle.assetBundle);

這樣不會有錯誤訊息，但也不會秀出log

想請教一下，是我那裡做錯了嗎??

謝謝各位的幫忙!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 125.230.84.190
※ 編輯: lovecold        來自: 125.230.84.190       (06/13 09:45)
推 holymars:Editor認不得jar:這種uri 有錯是正常的
原來如此，感謝提醒

→ holymars:在機器上要是沒跑到Debug那行一定是有錯誤訊息你漏了才對
推 holymars:另外WWW class你要檢查isDone 才能拿東西吧 就算在local
→ holymars:端的檔案也一樣..
原來是要加，因為之前測試時有加一樣沒有印出LOG，以為是卡死在迴圈內

所以把isDone拿掉了..感謝你的幫忙!!!^^

※ 編輯: lovecold        來自: 114.38.96.63         (06/13 23:45)