import UIKit
import WWLogView

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        _ = WWLogView.shared
        return true
    }
}

import UIKit
import WWLogView

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    @IBAction func showWindow(_ sender: UIButton) {
        let time = Date()
        WWLog(time.description(with: Locale.init(identifier: "zh-TW")))
    }
}