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iOS

Posted by Becool Man
Becool Man
Courses Plus Student 649 Points

Delay in getting data from NSDictionary

override func viewDidLoad() {
        super.viewDidLoad()

        let baseURL = NSURL(string: "http://numbersapi.com/\(number)/")

    }

func triviaFunc(){
        let baseURL = NSURL(string: "http://numbersapi.com/\(number)/")
        let triviaURL = NSURL(string: "trivia?json", relativeToURL: baseURL)

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

            if(error == nil){
                let dataObject = NSData(contentsOfURL: location)
                let triviaDictionary: NSMutableDictionary = NSJSONSerialization.JSONObjectWithData(dataObject!, options: nil, error: nil) as NSMutableDictionary
                let trivia = Trivia(triviaDictionary: triviaDictionary)

                self.triviaLabel.text = trivia.text

            }


        })
        downloadTaskTrivia.resume()
    }

@IBAction func showNumbersFacts() {
        var color = colorWheel.randomColor()
        view.backgroundColor = color
        triviaFunc()

        //numbersButtonText.tintColor = color
    }


Data.swift:

struct Trivia {
    var text: String
    var number: Int

    init(triviaDictionary: NSMutableDictionary){
        text = triviaDictionary["text"] as String
        number = triviaDictionary["number"] as Int
    }
}

Everytime I hit the button, I want to show text from Dictionary (now NSMutableDictionary - it doesn't matter). It is happening, but maybe after 5 or 6 seconds.

Second question. Is this solution same for getting token from API (if user is signing in)? Is NSDictionary permanent storage? What if I want to update data? For example, I have five todos, I will add one on a server and want to update them in iOS app. So what now?

Becool Man
Becool Man
Courses Plus Student 649 Points

Nobody?