Swift 4 macOS App – 如何查找重要的用户目录？_app

概述使用 Swift 4为macOS应用程序找到重要用户目录的最简单方法是：桌面,文档,下载等？ TLDR： let desktopDir = try? FileManager.default.url(for: .desktopDirectory, in: .userDomainMask, appropriateFor: nil, create: false)let documentDir = tr 使用 Swift 4为macOS应用程序找到重要用户目录的最简单方法是：桌面,文档,下载等？解决方法 TLDR：

let desktopDir = try? fileManager.default.url(for: .desktopDirectory,in: .userDomainMask,appropriateFor: nil,create: false)let documentDir = try? fileManager.default.url(for: .documentDirectory,create: false)let downloadsDir = try? fileManager.default.url(for: .downloadsDirectory,create: false)

从fileManager类获取此信息有两种方法：

这个：

func urls(for directory: fileManager.SearchPathDirectory,in domainMask: fileManager.SearchPathDomainMask) -> [URL]

Returns an array of URLs for the specifIEd common directory in the requested domains. […] The directorIEs are ordered according to the order of the domain mask constants,with items in the user domain first and items in the system domain last.

文档：https://developer.apple.com/documentation/foundation/filemanager/1407726-urls

(在@ leo-dabus的回答中已经提到了)

还有这个：

(我更喜欢,因为它更通用并返回单个URL)

func url(for directory: fileManager.SearchPathDirectory,in domain: fileManager.SearchPathDomainMask,appropriateFor url: URL?,create shouldCreate: Bool) throws -> URL

Locates and optionally creates the specifIEd common directory in a domain.

文件：https://developer.apple.com/documentation/foundation/filemanager/1407693-url

任何一个：

https://developer.apple.com/documentation/foundation/filemanager.searchpathdomainmask中定义的有效域是：

.userDomainMask: The user’s home directory—the place to install user’s personal items (~).

.localDomainMask: Local to the
current machine—the place to install items available to everyone on
this machine.

.networkDomainMask: Publicly available location in the
local area network—the place to install items available on the network
(/Network).

.systemDomainMask: ProvIDed by Apple—can’t be modifIEd (/System) .

.allDomainsMask: All domains.

目录参数有很多可能性,在https://developer.apple.com/documentation/foundation/filemanager.searchpathdirectory中定义：

.applicationDirectory: Supported applications (/Applications).

.demoApplicationDirectory: Unsupported applications and demonstration
versions.

.developerApplicationDirectory: Developer applications
(/Developer/Applications).

.adminApplicationDirectory System and
network administration applications.

.libraryDirectory: VarIoUs
user-visible documentation,support,and configuration files
(/library).

.developerDirectory: Developer resources (/Developer).

.userDirectory: User home directorIEs (/Users).

.documentationDirectory: documentation.

.documentDirectory: document directory.

.coreServiceDirectory: Location of core services
(System/library/CoreServices).

.autosavedinformationDirectory:
Location of user’s autosaved documents (library/autosave information).

.desktopDirectory: Location of user’s desktop directory.

.cachesDirectory: Location of discardable cache files (library/Caches).

.applicationSupportDirectory: Location of application support files
(library/Application Support).

.downloadsDirectory: Location of the
user’s downloads directory.

.inputMethodsDirectory: Location of
input Methods (library/input Methods).

.movIEsDirectory: Location of
user’s MovIEs directory (~/MovIEs).

.musicDirectory: Location of
user’s Music directory (~/Music).

.picturesDirectory: Location of
user’s Pictures directory (~/Pictures).

.printerDescriptionDirectory: Location of system’s PPDs directory
(library/Printers/PPDs).

.sharedPublicDirectory: Location of user’s
Public sharing directory (~/Public).

.preferencePanesDirectory:
Location of the PreferencePanes directory for use with System
Preferences (library/PreferencePanes).

.applicationScriptsDirectory:
Location of the user scripts folder for the calling application
(~/library/Application Scripts/),

.itemReplacementDirectory: Passed to the fileManager method
url(for:in:appropriateFor:create:) in order to create a temporary
directory.

.allApplicationsDirectory: All directorIEs where
applications can occur.

.alllibrarIEsDirectory: All directorIEs
where resources can occur.

.trashDirectory: Location of the trash directory.