Is it possible to check if a directory is empty in Swift 2.1?

Question

For example I'd like to check if: Users/username/Desktop/folder is empty, or better check if it has files with an .png extension?

I'm really new at all this but if anyone knows please help me :)

Just select Desktop folder instead of Documents, filter png files and check if !isEmpty — Leo Dabus, Dec 25 '15 at 23:23
Keep in mind that Swift leverages Cocoa and CocoaTouch to provide access to a wealth of features on OS X and iOS. This includes the `NSFileManager` class used in the answers below. Those frameworks predate Swift by many years, so in many cases you, will find a lot more resources by searching for Cocoa instead of Swift. Good luck! — hashemi, Dec 25 '15 at 23:36
@Doni if you would like to get that folder URL programatically instead of hard coding it you can do like this: guard let desktopFolderUrl = NSFileManager.defaultManager().URLsForDirectory(.DesktopDirectory, inDomains: .UserDomainMask).first?.URLByAppendingPathComponent("folder") else { return } — Leo Dabus, Dec 26 '15 at 00:24
@LeoDabus thanks now how to implement it to that previous code from @codedifferent? Sorry but again I'm really new. Thanks for the help guys and merry christmas :) — safasfmasklfalskf, Dec 26 '15 at 00:34
if you are gonna put it inside a method or inside viedDidLoad — Leo Dabus, Dec 26 '15 at 00:40
guard let dropIconsHereURL = NSFileManager().URLsForDirectory(.DesktopDirectory, inDomains: .UserDomainMask).first?.URLByAppendingPathComponent("Drop Icons Here") else { return } — Leo Dabus, Dec 26 '15 at 00:40
if you need to use its path you can access dropIconsHereURL.path! or — Leo Dabus, Dec 26 '15 at 00:42
guard let dropIconsHerePath = NSFileManager().URLsForDirectory(.DesktopDirectory, inDomains: .UserDomainMask).first?.URLByAppendingPathComponent("Drop Icons Here").path else { return } — Leo Dabus, Dec 26 '15 at 00:43

score 5 · Answer 1 · answered Dec 25 '15 at 23:24

5

Use contentsOfDirectoryAtPath to get the list of all files in a directoly, then filter the array for .png files

let path = "/Users/username/Desktop/folder"
do {
    let contents = try NSFileManager.defaultManager().contentsOfDirectoryAtPath(path)
    let images = contents.filter { $0.lowercaseString.hasSuffix(".png") }
} catch let error as NSError {
    // Directory not exist, no permission, etc.
    print(error.localizedDescription)
}

answered Dec 25 '15 at 23:24

Code Different

90,614
16
144
163

1

Ah, nice with filter, plus1 – dfrib Dec 25 '15 at 23:26
@dfri thanks, killing some time before my Christmas party – Code Different Dec 25 '15 at 23:28
What better way to kill time than code, right! Happy christmas *<:) – dfrib Dec 25 '15 at 23:29
@CodeDifferent I'm using this: "/Users/" + "(username)" + "/Desktop/Drop Icons Here/" but it doesn't work? – safasfmasklfalskf Dec 26 '15 at 00:23

score 0 · Answer 2 · answered Dec 25 '15 at 23:22

let fileManager = NSFileManager.defaultManager()
let folderPath = "/Users/username/Desktop/folder"

if let contentEnumerator:NSDirectoryEnumerator = fileManager.enumeratorAtPath(folderPath) {
    var numFilesWithSuffix = 0
    let mySuffix = "png"
    while let fileOrFolder = contentEnumerator.nextObject() as? String {
        if fileOrFolder.hasSuffix(mySuffix) {
            numFilesWithSuffix += 1 // count occurences
        }
    }
}

Is it possible to check if a directory is empty in Swift 2.1?

2 Answers2