What characters are allowed in a iOS file name?

Question

I\'m looking for a way to make sure a string can be used as a file name under iOS. I\'m currently in the section of the code that deletes incompatible characters. I\'m wonde

Answer 1

I came up with the following solution. Works nice so far.

import Foundation

extension String {
    func removeUnsupportedCharactersForFileName() -> String {
        var cleanString = self
        ["?", "/", "\\", "*"].forEach {
            cleanString = cleanString.replacingOccurrences(of: $0, with: "-")
        }
        return cleanString
    }
}

let a = "***???foo.png"
let validString = a.removeUnsupportedCharactersForFileName()