simplest animation

ViewController.swift

//
//  ViewController.swift
//  animation
//
//  Created by Fredric Cliver on 29/01/2019.
//  Copyright © 2019 Fredric Cliver. All rights reserved.
//

import Foundation
import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var btnPressMe: UIButton!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        
    }

    @IBAction func clickedPressMe(_ sender: UIButton) {
        UIView.animate(withDuration: 1.0, delay: 0.2, options: [UIView.AnimationOptions.curveEaseIn], animations: {
            self.btnPressMe.center = self.view.center
            self.view.backgroundColor = UIColor.black
        }) { (true) in
            // do nothing.
        }
    }
    
}