Karl Valliste Karl Valliste - 19 days ago 5
Swift Question

Swift3.0 fileAttributes throws "no such file" error on existing file

I am quite new to Swift and I am trying to implement a file creation date check.

The idea is to check if the file was created longer than 7 days ago. For some reason the code always returns "no such file" error.

To check what is wrong i used the same path to read the contents of the file in the same function and that works flawlessly.

Am I using the path incorrectly or have I misunderstood something?

func creationDateCheck(name: String) -> Bool {
// This is the path I am using, file is in the favorites folder in the .documentsDirectory
let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let myFilesPath = documentsUrl.appendingPathComponent("favorites/" + name + ".xml")
let pathString = "\(myFilesPath)"

//First do block tries to get the file attributes and fails
do {
let fileAttributes = try FileManager.default.attributesOfItem(atPath: pathString)
print(fileAttributes)
let creationDate = (fileAttributes[FileAttributeKey.creationDate] as? NSDate)!

return daysBetweenDates(endDate: creationDate as Date) > 7

} catch let error as NSError {

print(error.localizedDescription)
}

// Second do block reads from file successfully using the same path
do {
print(try String(contentsOf: myFilesPath, encoding: String.Encoding.utf8))
}catch {print("***** ERROR READING FROM FILE *****")}

return false
}

Answer

You can not get String from URL directly using "\(myFilesPath)" instead of that you need to use path property of URL.

let fileAttributes = try FileManager.default.attributesOfItem(atPath: myFilesPath.path)

The reason you are reading content of file successfully is that you have used String(contentsOf:encoding:) and it will accept URL object as first parameter.

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