How Dowmload and parse an csv file in swift?

Question

Created Feb ’21

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Hi there to apple community.
I am trying to download a csv file from a website to present the data in my app.but when I use the download task I don't know what to do with the response (it is a csv file)

Code Block let task = URLSession.shared.downloadTask(with: URL(string: "https://example.csv")!){ (url, response, error) in
   
  if error == nil
  {
     
  }
   
  else
  {
    print(error?.localizedDescription)
  }
}
task.resume()

what should I do with the response to get a parseable csv from this?
should I use another task?
the url is the download link of the file.
Thanks a lot for your help

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Answer 1

Claude31 OP

Feb ’21

What you do typically (see http ://swiftdeveloperblog. com/code-examples/download-file-from-a-remote-url-in-swift/):

Code Block override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    
    // Create destination URL 
    let documentsUrl:URL =  FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first as URL!
    let destinationFileUrl = documentsUrl.appendingPathComponent("downloadedFile.jpg")
    
    //Create URL to the source file you want to download
    let fileURL = URL(string: "https://s3.amazonaws.com/learn-swift/IMG_0001.JPG")
    
    let sessionConfig = URLSessionConfiguration.default
    let session = URLSession(configuration: sessionConfig)
 
    let request = URLRequest(url:fileURL!)
    
    let task = session.downloadTask(with: request) { (tempLocalUrl, response, error) in
        if let tempLocalUrl = tempLocalUrl, error == nil {
            if let statusCode = (response as? HTTPURLResponse)?.statusCode {
                print("Successfully downloaded. Status code: \(statusCode)")
            }
            
            do {
                try FileManager.default.copyItem(at: tempLocalUrl, to: destinationFileUrl)
            } catch (let writeError) {
                print("Error creating a file \(destinationFileUrl) : \(writeError)")
            }
            
        } else {
            print("Error" )
        }
    }
    task.resume()
    
  }

Now that you have the file, you need to parse the CSV

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