In my iOS app (running in the simulator) I'm able to create some files inside the documents directory with data.write(to: fileUrl) with fileUrl pointing to some file:///Users/Me/Library/Developer/CoreSimulator/..../Documents/myfile.xml.

Now I wanted to create a directory and store the files there (because I want to separate two different kinds of files I want to store), but a call to

try FileManager.default.createDirectory(atPath: pathUrl.absoluteString, withIntermediateDirectories: true)

with pathUrl being similar to the above file:///Users/Me/...../Documents/searches reveals

You can’t save the file “searches” because the volume is read only.

Couldn't find any additional information on what I would need to allow creating directories. Any idea?

Thanks Karsten

Hi,

how are you creating the pathUrl? Because normally this should work without any extra steps.

This errors looks to me like you are trying to save it somewhere else than the Documens folder

extension FileManager {
    /// Determine document directory.
    /// - Returns:a URL for the document directory.
    static func documentDirectory() -> URL {
        let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
        return paths[0]
    }
}

let pathUrl = FileManager.documentDirectory().appendingPathComponent(path)
try FileManager.default.createDirectory(atPath: pathUrl.absoluteString, withIntermediateDirectories: false)

with path being a String, e.g. "searches".

Interesting fact is that the command throws an error with description:

The file “searches” doesn’t exist.

Yes, correct, that's why you should create it!