Type Method


Initializes and returns bookmark data derived from an alias file pointed to by a specified URL.


class func bookmarkData(withContentsOf bookmarkFileURL: URL) throws -> Data



The URL that points to a file containing bookmark data.


The error that occurred in the case that the bookmark data cannot be derived.

Return Value

The bookmark data for the alias file.


This method doesn’t check to see if bookmarkFileURL points to an alias file. This allows this method to work with any file containing bookmark data. If bookmarkFileURL refers to a file which does not contain bookmark data or to a non-file object, such as a directory or symbolic link, this method returns nil produces an error.

This method returns nil if bookmark data cannot be created.

See Also

Working with Bookmark Data

class func resourceValues(forKeys: [URLResourceKey], fromBookmarkData: Data) -> [URLResourceKey : Any]?

Returns the resource values for properties identified by a specified array of keys contained in specified bookmark data.

class func writeBookmarkData(Data, to: URL, options: NSURL.BookmarkFileCreationOptions)

Creates an alias file on disk at a specified location with specified bookmark data.

func startAccessingSecurityScopedResource() -> Bool

In an app that has adopted App Sandbox, makes the resource pointed to by a security-scoped URL available to the app.

func stopAccessingSecurityScopedResource()

In an app that adopts App Sandbox, revokes access to the resource pointed to by a security-scoped URL.

typealias NSURL.BookmarkFileCreationOptions

Options used when creating file bookmark data

struct NSURL.BookmarkCreationOptions

Options used when creating bookmark data.

struct NSURL.BookmarkResolutionOptions

Options used when resolving bookmark data.