Cocoa: How do I change the download destination? Swift - swift

Question

I’m trying to download a file from a URL, I managed to do that however, the it will download to ~Libray directory. How do I change the directory to the downloads folder? or out of the library directory.
Here is my file downloader…
import Foundation
class FileDownloader {
static func loadFileSync(url: URL, completion: #escaping (String?, Error?) -> Void)
{
let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .allDomainsMask).first!
let destinationUrl = documentsUrl.appendingPathComponent(url.lastPathComponent)
if FileManager().fileExists(atPath: destinationUrl.path)
{
print("File already exists [\(destinationUrl.path)]")
completion(destinationUrl.path, nil)
}
else if let dataFromURL = NSData(contentsOf: url)
{
if dataFromURL.write(to: destinationUrl, atomically: true)
{
print("file saved [\(destinationUrl.path)]")
completion(destinationUrl.path, nil)
}
else
{
print("error saving file")
let error = NSError(domain:"Error saving file", code:1001, userInfo:nil)
completion(destinationUrl.path, error)
}
}
else
{
let error = NSError(domain:"Error downloading file", code:1002, userInfo:nil)
completion(destinationUrl.path, error)
}
}
static func loadFileAsync(url: URL, completion: #escaping (String?, Error?) -> Void)
{
let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let destinationUrl = documentsUrl.appendingPathComponent(url.lastPathComponent)
if FileManager().fileExists(atPath: destinationUrl.path)
{
print("File already exists [\(destinationUrl.path)]")
completion(destinationUrl.path, nil)
}
else
{
let session = URLSession(configuration: URLSessionConfiguration.default, delegate: nil, delegateQueue: nil)
var request = URLRequest(url: url)
request.httpMethod = "GET"
let task = session.dataTask(with: request, completionHandler:
{
data, response, error in
if error == nil
{
if let response = response as? HTTPURLResponse
{
if response.statusCode == 200
{
if let data = data
{
if let _ = try? data.write(to: destinationUrl, options: Data.WritingOptions.atomic)
{
completion(destinationUrl.path, error)
}
else
{
completion(destinationUrl.path, error)
}
}
else
{
completion(destinationUrl.path, error)
}
}
}
}
else
{
completion(destinationUrl.path, error)
}
})
task.resume()
}
}
}
I took a look at the code and I think it has to do something with this
let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .allDomainsMask).first!
let destinationUrl = documentsUrl.appendingPathComponent(url.lastPathComponent)
I have tried chinging the code from documentDirectory to desktopDirectory but that still puts it in the library directory. How do I change it from the library directory to the downloads directory?

Answer 1

You are running a sandboxed app. The Appname/Data/... directories are aliases of the real directories.
Also, you should use userDomainMask instead of allDomainsMask to search for the path in user's home directory. The correct directory you are looking for is downloadsDirectory.
let downloadsUrl = FileManager.default.urls(for: .downloadsDirectory, in: .userDomainMask).first!
let destinationUrl = downloadsUrl.appendingPathComponent(url.lastPathComponent)
There is another SO thread about sandboxed directories:
how to get /Users/username/Downloads path in a sandboxed app?