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

Posted by Rolando Cruz
Rolando Cruz
2,995 Points

"Cast from 'NSData?' to unrelated type 'NSDictionary' always fails"

I get that error with this code:

let baseURL = NSURL(string: "https://api.forecast.io/forecast/\(apiKey)/")
        let forecastURL = NSURL(string: "37.8267,-122.423", relativeToURL: baseURL)


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


                    if (error == nil) {
                    let dataObject = NSData(contentsOfURL: location)

                    let weatherDictionary: NSDictionary = NSJSONSerialization.dataWithJSONObject(dataObject!, options: nil, error: nil) as! NSDictionary
                    }

            })
        downloadTask.resume()

Chris Upjohn Pasan Premaratne Christian Andersson Adam Moore

Rolando Cruz
Rolando Cruz
2,995 Points

Chris Upjohn Pasan Premaratne Christian Andersson Adam Moore Amit Bijlani

Anthony Munoz
Anthony Munoz
1,935 Points
Anthony Munoz
Anthony Munoz
1,935 Points

let dataObject = NSData(contentsOfURL: location!) unwrap NSJSONSerialization.JSONObjectWithData not NSJSONSerialization.dataWithJSONObject