Czech Nature Sounds View Controller

import UIKit

class ViewController: UIViewController {

    var realScrollView = UIScrollView()
    var newView = UIView()

    let potucekNaJareButton = UIButton()
    let eveningBirdsButton = UIButton()
    let forestInAfternoonButton = UIButton()
    let forestInAfternoonIIButton = UIButton()
    let middleRivuletButton = UIButton()
    let homeBirdsButton = UIButton()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        realScrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height))
        newView = UIView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height))
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func viewWillLayoutSubviews() {
        super.viewWillLayoutSubviews()

        realScrollView.contentSize = CGSize(width: UIScreen.main.bounds.width, height: 3060)
        view.addSubview(realScrollView)

        view.addSubview(newView)

        potucekNaJareButton.setBackgroundImage(#imageLiteral(resourceName: "rivuletInSpring"), for: .normal)
        newView.addSubview(potucekNaJareButton)
        potucekNaJareButton.translatesAutoresizingMaskIntoConstraints = false
        potucekNaJareButton.addTarget(self, action: #selector(soundSelected(sender:)), for: .touchUpInside)

        eveningBirdsButton.setBackgroundImage(#imageLiteral(resourceName: "eveningBirds"), for: .normal)
        newView.addSubview(eveningBirdsButton)
        eveningBirdsButton.translatesAutoresizingMaskIntoConstraints = false
        eveningBirdsButton.addTarget(self, action: #selector(soundSelected(sender:)), for: .touchUpInside)

        forestInAfternoonButton.setBackgroundImage(#imageLiteral(resourceName: "forestInAfternoon"), for: .normal)
        newView.addSubview(forestInAfternoonButton)
        forestInAfternoonButton.translatesAutoresizingMaskIntoConstraints = false
        forestInAfternoonButton.addTarget(self, action: #selector(soundSelected(sender:)), for: .touchUpInside)

        forestInAfternoonIIButton.setBackgroundImage(#imageLiteral(resourceName: "forestInAfternoonII"), for: .normal)
        newView.addSubview(forestInAfternoonIIButton)
        forestInAfternoonIIButton.translatesAutoresizingMaskIntoConstraints = false
        forestInAfternoonIIButton.addTarget(self, action: #selector(soundSelected(sender:)), for: .touchUpInside)

        middleRivuletButton.setBackgroundImage(#imageLiteral(resourceName: "middleRivulet"), for: .normal)
        newView.addSubview(middleRivuletButton)
        middleRivuletButton.translatesAutoresizingMaskIntoConstraints = false
        middleRivuletButton.addTarget(self, action: #selector(soundSelected(sender:)), for: .touchUpInside)

        homeBirdsButton.setBackgroundImage(#imageLiteral(resourceName: "homeBirds"), for: .normal)
        newView.addSubview(homeBirdsButton)
        homeBirdsButton.translatesAutoresizingMaskIntoConstraints = false
        homeBirdsButton.addTarget(self, action: #selector(soundSelected(sender:)), for: .touchUpInside)

        NSLayoutConstraint.activate([
            realScrollView.topAnchor.constraint(equalTo: topLayoutGuide.bottomAnchor, constant: 0.0),
            realScrollView.leftAnchor.constraint(equalTo: view.leftAnchor),
            realScrollView.rightAnchor.constraint(equalTo: view.rightAnchor),
            newView.topAnchor.constraint(equalTo: topLayoutGuide.bottomAnchor, constant: 0.0),
            newView.leftAnchor.constraint(equalTo: view.leftAnchor),
            newView.rightAnchor.constraint(equalTo: view.rightAnchor),
            potucekNaJareButton.widthAnchor.constraint(equalToConstant: 414),
            potucekNaJareButton.heightAnchor.constraint(equalToConstant: 170),
            potucekNaJareButton.heightAnchor.constraint(equalTo: potucekNaJareButton.widthAnchor, multiplier: 170.0/414.0),
            potucekNaJareButton.topAnchor.constraint(equalTo: newView.topAnchor),
            potucekNaJareButton.leftAnchor.constraint(equalTo: newView.leftAnchor),
            potucekNaJareButton.rightAnchor.constraint(equalTo: newView.rightAnchor),
            eveningBirdsButton.widthAnchor.constraint(equalToConstant: 414),
            eveningBirdsButton.heightAnchor.constraint(equalToConstant: 170),
            eveningBirdsButton.heightAnchor.constraint(equalTo: eveningBirdsButton.widthAnchor, multiplier: 170.0/414.0),
            eveningBirdsButton.topAnchor.constraint(equalTo: potucekNaJareButton.bottomAnchor),
            eveningBirdsButton.leftAnchor.constraint(equalTo: newView.leftAnchor),
            eveningBirdsButton.rightAnchor.constraint(equalTo: newView.rightAnchor),
            forestInAfternoonButton.widthAnchor.constraint(equalToConstant: 414),
            forestInAfternoonButton.heightAnchor.constraint(equalToConstant: 170),
            forestInAfternoonButton.heightAnchor.constraint(equalTo: forestInAfternoonButton.widthAnchor, multiplier: 170.0/414.0),
            forestInAfternoonButton.topAnchor.constraint(equalTo: eveningBirdsButton.bottomAnchor),
            forestInAfternoonButton.leftAnchor.constraint(equalTo: newView.leftAnchor),
            forestInAfternoonButton.rightAnchor.constraint(equalTo: newView.rightAnchor),
            forestInAfternoonIIButton.widthAnchor.constraint(equalToConstant: 414),
            forestInAfternoonIIButton.heightAnchor.constraint(equalToConstant: 170),
            forestInAfternoonIIButton.heightAnchor.constraint(equalTo: forestInAfternoonIIButton.widthAnchor, multiplier: 170.0/414.0),
            forestInAfternoonIIButton.topAnchor.constraint(equalTo: forestInAfternoonButton.bottomAnchor),
            forestInAfternoonIIButton.leftAnchor.constraint(equalTo: newView.leftAnchor),
            forestInAfternoonIIButton.rightAnchor.constraint(equalTo: newView.rightAnchor),
            middleRivuletButton.widthAnchor.constraint(equalToConstant: 414),
            middleRivuletButton.heightAnchor.constraint(equalToConstant: 170),
            middleRivuletButton.heightAnchor.constraint(equalTo: forestInAfternoonIIButton.widthAnchor, multiplier: 170.0/414.0),
            middleRivuletButton.topAnchor.constraint(equalTo: forestInAfternoonIIButton.bottomAnchor),
            middleRivuletButton.leftAnchor.constraint(equalTo: newView.leftAnchor),
            middleRivuletButton.rightAnchor.constraint(equalTo: newView.rightAnchor),
            homeBirdsButton.widthAnchor.constraint(equalToConstant: 414),
            homeBirdsButton.heightAnchor.constraint(equalToConstant: 170),
            homeBirdsButton.heightAnchor.constraint(equalTo: forestInAfternoonIIButton.widthAnchor, multiplier: 170.0/414.0),
            homeBirdsButton.topAnchor.constraint(equalTo: middleRivuletButton.bottomAnchor),
            homeBirdsButton.leftAnchor.constraint(equalTo: newView.leftAnchor),
            homeBirdsButton.rightAnchor.constraint(equalTo: newView.rightAnchor)
            ])
    }

    func soundSelected(sender: UIButton){
        let pController = Playercontroller()
        self.navigationController?.pushViewController(pController, animated: true)
        switch(sender){
        case potucekNaJareButton:
            pController.navigationTitle = "Rivulet in the Spring"
            pController.artworkView.image = #imageLiteral(resourceName: "rivuletInSpring")
            pController.soundName = "rivuletInSpringMelody"
        case eveningBirdsButton:
            pController.navigationTitle = "Evening Birds"
            pController.artworkView.image = #imageLiteral(resourceName: "eveningBirds")
            pController.soundName = "eveningBirdsMelody"
        case forestInAfternoonButton:
            pController.navigationTitle = "Forest in the Afternoon"
            pController.artworkView.image = #imageLiteral(resourceName: "forestInAfternoon")
            pController.soundName = "forestInAfternoonMelody"
        case forestInAfternoonIIButton:
            pController.navigationTitle = "Forest in the Afternoon II"
            pController.artworkView.image = #imageLiteral(resourceName: "forestInAfternoonII")
            pController.soundName = "forestInAfternoonIIMelody"
        case middleRivuletButton:
            pController.navigationTitle = "In the middle of the rivulet"
            pController.artworkView.image = #imageLiteral(resourceName: "middleRivulet")
            pController.soundName = "middleRivuletMelody"
        case homeBirdsButton:
            pController.navigationTitle = "Home birds talk"
            pController.artworkView.image = #imageLiteral(resourceName: "homeBirds")
            pController.soundName = "homeBirdsMelody"
        default:
            pController.navigationTitle = "Nothing"
        }
    }

}