Tomas.1997 Tomas.1997 - 5 months ago 57
Swift Question

Get mounted volumes list with Swift?

Does anyone know how to get a list of all removable volumes mounted with Swift?

I've already tried this, but it return a list of all files and subfolders of external drivers:

let filemanager:NSFileManager = NSFileManager()
let files = filemanager.enumeratorAtPath("/Volumes")


while let file = files?.nextObject() {
println(file)
menu.addItem(NSMenuItem(title: file as! String, action: Selector(""), keyEquivalent: ""))
}

Answer

This prints the list of all mounted volumes:

let filemanager = NSFileManager()
let keys = [NSURLVolumeNameKey, NSURLVolumeIsRemovableKey, NSURLVolumeIsEjectableKey]
let paths = filemanager.mountedVolumeURLsIncludingResourceValuesForKeys(keys, options: nil)
if let urls = paths as? [NSURL] {
    for url in urls {
        println(url)
    }
}

You can of course filter to get only the paths inside the "Volumes" directory:

let filemanager = NSFileManager()
let keys = [NSURLVolumeNameKey, NSURLVolumeIsRemovableKey, NSURLVolumeIsEjectableKey]
let paths = filemanager.mountedVolumeURLsIncludingResourceValuesForKeys(keys, options: nil)
if let urls = paths as? [NSURL] {
    for url in urls {
        if url.relativePath?.pathComponents.count > 1 {
            if url.relativePath?.pathComponents[1] == "Volumes" {
                println(url)
            }
        }
    }
}

And with Swift 2 there's two differences: pass [] instead of nil for the filemanager's options, and there's no need to cast the array of NSURLs:

let filemanager = NSFileManager()
let keys = [NSURLVolumeNameKey, NSURLVolumeIsRemovableKey, NSURLVolumeIsEjectableKey]
let paths = filemanager.mountedVolumeURLsIncludingResourceValuesForKeys(keys, options: [])
if let urls = paths {
    for url in urls {
        if url.relativePath?.pathComponents.count > 1 {
            if url.relativePath?.pathComponents[1] == "Volumes" {
                print(url)
            }
        }
    }
}

Update for Swift 2.1

let keys = [NSURLVolumeNameKey, NSURLVolumeIsRemovableKey, NSURLVolumeIsEjectableKey]
let paths = NSFileManager().mountedVolumeURLsIncludingResourceValuesForKeys(keys, options: [])
if let urls = paths {
    for url in urls {
        if let components = url.pathComponents
            where components.count > 1
            && components[1] == "Volumes" {
                print(url)
        }
    }
}

Update for Swift 3

let keys = [URLResourceKey.volumeNameKey.rawValue, URLResourceKey.volumeIsRemovableKey.rawValue, URLResourceKey.volumeIsEjectableKey.rawValue]
let paths = FileManager().mountedVolumeURLs(includingResourceValuesForKeys: keys, options: [])
if let urls = paths {
    for url in urls {
        if let components = url.pathComponents
            where components.count > 1
                && components[1] == "Volumes" {
            print(url)
        }
    }
}