---
title: "url(for:)"
framework: backgroundassets
role: symbol
role_heading: Instance Method
path: "backgroundassets/assetpackmanager/url(for:)"
---

# url(for:)

Returns a URL for the specified relative path.

## Declaration

```swift
nonisolated func url(for path: FilePath) throws -> URL
```

## Parameters

- `path`: The relative path.

## Return Value

Return Value The URL to the item.

## Discussion

Discussion warning: Don’t persist the returned URL beyond the lifetime of the current process. note: This method will return a well formed URL even if no item exists at the specified relative path in any asset pack, in which case any attempts to get its contents—whether it’s a file or a directory—will fail. 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. Unlike contents(at:searchingInAssetPackWithID:options:) and descriptor(for:searchingInAssetPackWithID:), this method supports retrieving entire directories—including packages—in which case it merges the corresponding slices of the shared logical directory from all downloaded asset packs that contain such slices. If there’s a path collision across multiple asset packs, then it’s undefined from which asset pack an individual file will be resolved. warning: This method is less efficient than are contents(at:searchingInAssetPackWithID:options:) and descriptor(for:searchingInAssetPackWithID:); use those methods instead if you can do so. In particular, this method shouldn’t be used to get the URL to the root of the shared asset-pack namespace. Don’t use this method to block the main thread. note: When the path isn’t relative or when some other error occurs while finding the requested item.

## See Also

### Accessing asset contents

- [contents(at:searchingInAssetPackWithID:options:)](backgroundassets/assetpackmanager/contents(at:searchinginassetpackwithid:options:).md)
- [contents(at:asLocalizedFor:options:)](backgroundassets/assetpackmanager/contents(at:aslocalizedfor:options:).md)
- [descriptor(for:searchingInAssetPackWithID:)](backgroundassets/assetpackmanager/descriptor(for:searchinginassetpackwithid:).md)
- [descriptor(for:asLocalizedFor:)](backgroundassets/assetpackmanager/descriptor(for:aslocalizedfor:).md)
- [url(for:asLocalizedFor:)](backgroundassets/assetpackmanager/url(for:aslocalizedfor:).md)