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iOS Build a Weather App with Swift (Retired) Pulling Data From the Web Making a Network Call

Error Message

My Code Follows This Video, But For Some Unknown Reason I Get An Error Message. I Have Masked My API code, I Already Know That This Is Correct.

import UIKit

class ViewController: UIViewController {

    private let apiKey = "masked"

    override func viewDidLoad() {

        let baseURL = NSURL(string: "https://api.forecast.io/forecast/\(apiKey)/")
        let foreCastURL = NSURL(string: "37.8267, -122.423", relativeToURL: baseURL)
        let weatherData = NSData(contentsOfURL: foreCastURL!, options:nil , error: nil)



    override func didReceiveMemoryWarning() {
        // Dispose of any resources that can be recreated.


Error Message: fatal error: unexpectedly found nil while unwrapping an Optional value

XCODE: Version 6.1 MAC OSX YOSEMITE 10.10.1

Thank You So Much In Advance! -Jordan

1 Answer

Chris Shaw
Chris Shaw
26,650 Points

Hi Jordan,

The only issue I see with your code is you have a space in your coordinates which isn't allowed unless it's URL encoded, simply remove that and you code should work fine.