Version: 2021.2
LanguageEnglish
  • C#

Caching.IsVersionCached

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Obsolete Please use IsVersionCached with Hash128 instead.

Declaration

public static bool IsVersionCached(string url, int version);

Parameters

string Url The filename of the AssetBundle. Domain and path information are stripped from this string automatically.
int Version The version number of the AssetBundle to check for. Negative values are not allowed.

Returns

bool True if an AssetBundle matching the url and version parameters has previously been loaded using UnityWebRequestAssetBundle.GetAssetBundle() and is currently stored in the cache. Returns false if the AssetBundle is not in cache, either because it has been flushed from the cache or was never loaded using the Caching API.

Description

Checks if an AssetBundle is cached.

When using the default shared cache, the URL of the WebPlayer application bundle is automatically prepended to the url parameter; this prevents filename collisions with identically-named AssetBundles used by other developers' WebPlayer applications. WebPlayer applications that use a dedicated cache do not experience this behavior. This function can be utilized to enable AssetBundle preloading. First, call Caching.IsVersionCached() to see if the current version of an AssetBundle is already cached. If the AssetBundle is not cached, it can be preloaded in the background so that it is immediately available for loading into memory when requested.

Web player is not supported from 5.4.0 and beyond.

Copyright © 2023 Unity Technologies
优美缔软件(上海)有限公司 版权所有
"Unity"、Unity 徽标及其他 Unity 商标是 Unity Technologies 或其附属机构在美国及其他地区的商标或注册商标。其他名称或品牌是其各自所有者的商标。
公安部备案号:
31010902002961