iOS Error Code=256 in try read file from local filesystem

August 21, 2024

I have a problem when trying to open the file and read it. Im giving Error: "Code=256 cannot open file test.csv"

let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsDirectory = paths[0]
let docURL = URL(string: documentsDirectory)!
let dataPath = docURL.appendingPathComponent("myDir/\(fileName)")
do {
    let content = try String(contentsOf: dataPath, encoding: .utf8)
    print(content)         
} catch {
    print(error)
}

I’m not sure if I’m doing it correctly, saving the file as above is ok. Of course when I check the path in the terminal it is fine. File exist.

>Solution :

It is very likely an invalid URL. The status code indicates NSFileReadUnknownError, which is not at all useful. You can probably fix it by using a different URL initializer.

let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsDirectory = paths[0]
let docURL = URL(fileURLWithPath: documentsDirectory) // <-- This line
let dataPath = docURL.appendingPathComponent("myDir").appendingPathComponent(fileName)

do {
    let content = try String(contentsOf: dataPath, encoding: .utf8)
    print(content)
} catch {
    print("Failed to read file: \(error.localizedDescription)")
}