iOSDC JAPAN 2017 Demo - ViewController.swift

ViewController.swift

import UIKit

class ViewController: UIViewController {
    private var count = 0

    override func viewDidLoad() {
        super.viewDidLoad()
        Log.info(message: "viewDidLoad")
        Log.info(message: "API: GET /some/values")
        Log.info(message: "User did something.")
    }

    @IBAction func infoTapped(_ sender: Any) {
        count += 1
        Log.info(message: "Info tapped \(count)")
    }

    @IBAction func errorTapped(_ sender: Any) {
        let fakeUrl = URL(string: "https://fake.google.com")!
        let request = URLRequest(url: fakeUrl)
        let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
            if let error = error {
                Log.error(error: error)
                return
            }
            // Do something
        }
        task.resume()
    }

    @IBAction func fatalTapped(_ sender: Any) {
        guard count < 0 else {
            Log.fatal(message: "count value is unexpected.")
            return
        }
        // Do something
    }

    @IBAction func crashTapped(_ sender: Any) {
        let nilValue: String? = nil
        print(nilValue!) // Crash
    }
}