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iOS Build a Weather App with Swift (Retired) Concurrency Using Our JSON Data

Posted by Chapin Alf
Chapin Alf
Courses Plus Student 138 Points

Getting error "Use of unresolved identifier 'urlContents'.

Copy of code: class ViewController: UIViewController {

private let apiKey = "00bd1d14e13bd044bdb542e26303873d"

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    let baseUrl = NSURL(string:"https://api.forecast.io/forecast/\(apiKey)/")
    let forecastUrl = NSURL(string: "26.361857,-80.071547", relativeToURL: baseUrl)

   let sharedSession = NSURLSession.sharedSession()
    let downloadTask: NSURLSessionDownloadTask = sharedSession.downloadTaskWithURL(forecastUrl!, completionHandler: { (location: NSURL!, response: NSURLResponse!, error: NSError!) -> Void in

        NSString(contentsOfURL: location, encoding: NSUTF8StringEncoding, error: nil)
        println(urlContents)



    })
    downloadTask.resume()

2 Answers

Rolando Cruz
Rolando Cruz
2,995 Points

Hi Chapin!

I noticed right here, that you didn't store this block of code in a constant:

NSString(contentsOfURL: location, encoding: NSUTF8StringEncoding, error: nil)
println(urlContents)

So instead, it should look something like this:

let urlContents = NSString(contentsOfURL: location, encoding: NSUTF8StringEncoding, error: nil)
println(urlContents)
Greg Kaleka
Greg Kaleka
39,021 Points
Greg Kaleka
Greg Kaleka
39,021 Points

Hey Ronaldo - just an FYI that I cleaned up your formatting a bit.

Greg Kaleka
Greg Kaleka
39,021 Points
Greg Kaleka
Greg Kaleka
39,021 Points

Hi Chapin,

You're trying to println urlContents, which you haven't defined as a constant or variable. What are you trying to print, exactly?