【Xcode/Swift】チュートリアル画面みたいなものを表示する

pod 'lottie-ios'

import UIKit
import Lottie

class ViewController: UIViewController {
    
    @IBOutlet weak var scrollView: UIScrollView!
    
    //JSONファイルを連番にして使用
    private let onboardArray = ["1", "2", "3", "4", "5"]
    //各自アニメーション下に表示するメッセージ
    private let onboardStringArray = ["Welcome to Apple!","I'm so happy to see you!","Are you excited now?","What are you waiting for?","Let's make history today!!!"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupView()
        setupScrollView()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        //ナビゲーションバーを消す
        self.navigationController?.isNavigationBarHidden = true
    }
    
    private func setupView() {
        scrollView.isPagingEnabled = true
        //アニメーションのループ再生
        for i in 0...4 {
            let animationView = AnimationView()
            let animation = Animation.named(onboardArray[i])
            animationView.frame = CGRect(x: CGFloat(i) * view.frame.size.width, y: 0, width: view.frame.size.width, height: view.frame.size.height)
            animationView.animation = animation
            animationView.contentMode = .scaleAspectFit
            animationView.loopMode = .loop
            animationView.play()
            scrollView.addSubview(animationView)
        }
    }
    
}

extension ViewController: UIScrollViewDelegate {
    private func setupScrollView() {
        scrollView.delegate = self
        scrollView.contentSize = CGSize(width: view.frame.size.width * 5, height: scrollView.frame.size.height)
        //表示テキストの設定
        for i in 0...4 {
            let onboardLabel = UILabel(frame: CGRect(x: CGFloat(i) * view.frame.size.width, y: view.frame.size.height / 3, width: scrollView.frame.size.width, height: scrollView.frame.size.height))
            onboardLabel.font = UIFont.boldSystemFont(ofSize: 28.0)
            onboardLabel.textAlignment = .center
            onboardLabel.text = onboardStringArray[i]
            scrollView.addSubview(onboardLabel)
        }
    }
    
}