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

Posted by Gwendolyn Zepeda
Gwendolyn Zepeda
4,890 Points

I updated the code from the video to the suggested code for the 6.1 update and I am getting a lot of errors.

This is my code from the last few videos and it worked before I added the sharedSession parts. I checked it several times and I'm not sure what is missing.

        let baseURL = NSURL(string: "https://api.forecast.io/forecast/\(apiKey)/")
        let forcastURL = NSURL(string: "39.920032,-86.073166", relativeToURL: baseURL)

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

            var urlContents = NSString(contentsOfURL: NSURL.self, encoding: UInt.self, error: NSErrorPointer.self)
        })
        downloadTask.resume()

    }
Eric Wood
Eric Wood
5,194 Points

Try these changes in your completionHandler:

{(location: NSURL!, response: NSURLResponse!, error: NSError!) -> Void in
Colton Ballinger
Colton Ballinger
1,767 Points
Colton Ballinger
Colton Ballinger
1,767 Points

Try making the following changes...

Change var urlContents to:

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

Change let downloadTask to:

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