正确加载 AB包部分代码

最新推荐文章于 2024-11-19 11:29:17 发布

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最新推荐文章于 2024-11-19 11:29:17 发布

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分类专栏： unity

本文链接：https://blog.youkuaiyun.com/liudavi/article/details/81567951

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这篇博客介绍了如何在Unity中正确加载AssetBundle。首先检查已加载的AssetBundles，如果找到匹配的则直接回调，否则通过DownloadAssetBundle方法从本地或远程下载。在下载过程中，针对不同平台（如Android和iOS）提供了适配的加载方式。最后，如果使用本地AssetBundles，将从指定路径加载，否则通过UnityWebRequest从网络获取。

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public void LoadAssetBundle(string bundleID, Action<AssetBundle> callBack = null, uint version = 0)
{
bundleID = bundleID.ToLower();

//Check to see if bundle is already loaded in memory
IEnumerable bundles = AssetBundle.GetAllLoadedAssetBundles();

foreach (AssetBundle bundle in bundles)
{
if (bundle.name == bundleID)
{
callBack(bundle);
return;
}
}

//this will call the SDK loading api in the future
//For now, we'll directly load the asset bundle
StartCoroutine(DownloadAssetBundle(bundleID, callBack, version));
}

private IEnumerator DownloadAssetBundle(string bundleID, Action<AssetBundle> callBack, uint version = 0)
{
Debug.Log("Starting Download of Assetbundle: [" + bundleID + "]");

if (UseLocalAssetBundles)
{
//Caching.ClearCache ();
bundleID = bundleID.ToLower();
DirectoryInfo dirInfo = new DirectoryInfo(Application.streamingAssetsPath);
string bundlePath = dirInfo.FullName + "/AssetBundles/iOS/";
#if UNITY_EDITOR
bundlePath = dirInfo.FullName + "/AssetBundles/StandaloneOSXUniversal/";
#endif

AssetBundle bundle = null;
// Fix to load android asset bundles
#if UNITY_ANDROID && !UNITY_EDITOR
bundlePath = dirInfo.FullName + "/AssetBundles/Android/";
if(BetterStreamingAssets.FileExists("AssetBundles/Android/" + bundleID)){
AssetBundleCreateRequest t_bund = BetterStreamingAssets.LoadAssetBundleAsync("AssetBundles/Android/" + bundleID);
yield return t_bund;
bundle = t_bund.assetBundle;
}
#else
if (File.Exists(bundlePath + bundleID))
{
bundle = AssetBundle.LoadFromFile(bundlePath + bundleID) as AssetBundle;
}
#endif

if (bundle == null)
{
Debug.Log("Error loading bundle at path " + bundlePath + bundleID);
}

if (callBack != null)
{
callBack(bundle);
}

}
else
{

//This will pull from the cache if we're loading a previously loaded asset bundle with the same version number
UnityWebRequest uwr = UnityWebRequest.GetAssetBundle("https://squarepanda-games-test.s3.amazonaws.com/squareworldproto/AssetBundles/" + bundleID, version, 0);
uwr.SendWebRequest();

while (!uwr.isDone)
{
Debug.Log(uwr.downloadProgress);
yield return 0;
}

//yield return uwr.SendWebRequest();

if (uwr.isNetworkError || uwr.isHttpError)
{
Debug.Log(uwr.error);
}
else
{
AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(uwr);
if (callBack != null)
{
callBack(bundle);
}
}

uwr.Dispose();
}
}