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Posted May 1, 2015 2:33am by

"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()