# contentsAtPath:searchingInAssetPackWithIdentifier:options:error: Returns the contents of an asset file at the specified relative path. ``` - (NSData *) contentsAtPath:(NSString *) path searchingInAssetPackWithIdentifier:(NSString *) assetPackIdentifier options:(NSDataReadingOptions) options error:(NSError **) error; ``` ## Parameters `path` The relative file path. `assetPackIdentifier` The identifier of the asset pack in which you want to search for the file or `nil` if you want to search in all asset packs. `options` Options for how to read the file’s contents into a data object. `error` A pointer to an error that will be set if an error occurs. If no file is found at `path`, then `error` will point to an `NSError` object with [`BAManagedErrorCodeFileNotFound`](/documentation/BackgroundAssets/BAManagedErrorCode/BAManagedErrorCodeFileNotFound) as its code. ## Return Value The file’s contents or `nil` if an error occurred. ## Discussion All asset packs share the same namespace, so you can treat the overall collection of downloaded asset packs as if it were a single root directory that contains all of your subdirectories and asset files, regardless of the specific asset pack in which any particular file resides. If there’s a file-path collision across multiple asset packs, then it’s undefined from which asset pack the file will be read unless you explicitly limit the search to a particular asset pack by passing a non-`nil` identifier to the `assetPackIdentifier` parameter. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)