Missing argument for parameter 'totalBytesWritten' in call

Question

I'm writing an iOS app in Swift 3.0.1 and Xcode 8.1. I am attempting to download a file from the internet programatically.

let configuration = URLSessionConfiguration.default
let session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)

Somehow this call above is not liked by Xcode. I'm not sure what I am missing.

EDIT:

This is where I'm using this call. Inside of this I get a different error, though. "Use of instance member 'URLSession' on type 'AdvancedSettingsTableViewController'; did you mean to use a value of type 'AdvancedSettingsTableViewController' instead?"

lazy var downloadSession: URLSession = {
    let configuration = URLSessionConfiguration.default
    let session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)
    return session
}()

EDIT 2: It almost seems like it doesn't recognize

init(configuration: URLSessionConfiguration, delegate: URLSessionDelegate?, delegateQueue queue: OperationQueue?)

as a valid initializer. If I command click on URLSession I get a question mark.

[Related](http://stackoverflow.com/questions/25571461/download-a-file-with-nsurlsession-in-swift) — Vemonus, Dec 09 '16 at 16:00
I'm not. The initializer I am trying to call is (init(configuration: URLSessionConfiguration, delegate: URLSessionDelegate?, delegateQueue queue: OperationQueue?)) — Brian Benavides, Dec 09 '16 at 16:00
Try, `let session = URLSession(configuration: configuration)` I'm not sure you can set the delegate in a getter — zsteed, Dec 09 '16 at 17:53
When I try that I get `Missing argument for parameter 'downloadTask' in call` — Brian Benavides, Dec 09 '16 at 19:49

score 0 · Accepted Answer · answered Mar 27 '17 at 15:08

0

It happened to me as well and it seems that it was caused by other problems with the code. After fixing other issues in the file, it stopped complaining.

answered Mar 27 '17 at 15:08

Maciej Trybiło

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Missing argument for parameter 'totalBytesWritten' in call

1 Answers1