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Apps are now driven by the power of the web. It means that you can connect your app to virtually any service and get data from it.

Want the latest stock prices, weather forecast, upload a photo to generate hashtags, search iTunes Store, request a Uber Ride, ANYTHING!

To do this, as a developer, you need to know how to:
+ Build a Networking Stack
+ Use iOS Multi-threading
+ Make network request to REST API
+ Parse JSON data to Foundation Objects

In this episode, Duc will help you learn exactly that and even more!

FREE DOWNLOAD:

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ABOUT CODE MASTERY
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This is his free-style no notes, no teleprompter presentation and live coding broadcast with you guys everyday.

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MEET DUC TRAN
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Duc Tran is founder of Developers Academy, one of the world’s leading iOS, Android and Web development trainers.

More than 2,000,000 developers have studied his video trainings; 100,000 developers see his posts each month. Each year, Duc has helped 20,000 plus developers graduate from his online courses or video series.

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FREE TRAININGS IN IOS DEVELOPMENT
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SOURCE CODE IN THIS COURSE
*********

NetworkProcessor.swift

class NetworkProcessor
{
lazy var configuration: URLSessionConfiguration = URLSessionConfiguration.default
lazy var session: URLSession = URLSession(configuration: self.configuration)

let url: URL

init(url: URL)
{
self.url = url
}

typealias JSONDictionaryHandler = (([String : Any]?) – Void)

func downloadJSONFromURL(_ completion: @escaping JSONDictionaryHandler)
{
let request = URLRequest(url: self.url)
let dataTask = session.dataTask(with: request) { (data, response, error) in

if error == nil {

if let httpResponse = response as? HTTPURLResponse {
switch httpResponse.statusCode {
case 200:
// successful response
if let data = data {
do {
let jsonDictionary = try JSONSerialization.jsonObject(with: data, options: .mutableContainers)

completion(jsonDictionary as? [String : Any])

} catch let error as NSError {
print(“Error processing json data: (error.localizedDescription)”)
}

}

default:
print(“HTTP Reponse Code: (httpResponse.statusCode)”)
}
}

} else {
print(“Error: (error?.localizedDescription)”)
}
}

dataTask.resume()
}
}

Full access to source code:

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