ハッカソンでiOSアプリを２４時間で作るためのアーキテクチャや事前準備、実装手順

class NickNameManager {

    private init(){

    }
    static var shared =  NickNameManager()

    var screenName = ""
    var nickName = ""
    var screenShot: UIImage?
}

class InputNameViewController: UIViewController {

    @IBAction func buttonTapped(_ sender: Any) {

        guard let screenName = textField.text else { return }
        NickNameManager.shared.screenName = screenName
    }
}

class ResultViewController: UIViewController {

    var nickName: String {
        let name = NickNameManager.shared.nickName
        return name
    }

    @IBOutlet weak var resultLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()

        resultLabel.text = nickName
    }
}

class ScreenTransitionManager {

    static let shared = ScreenTransitionManager()
    private init(){

    }

    private var targetViewController: UIViewController? {
        // 現在一番上にあるViewControllerを取得する
        var tc = UIApplication.shared.keyWindow?.rootViewController
        while tc?.presentedViewController != nil {
            tc = tc!.presentedViewController
        }
        return tc
    }

    /// 横にスライド表示
    private func show(_ controller: UIViewController){
        targetViewController?.show(controller, sender: targetViewController)
    }

    /// 新しいnavigationControllerでモーダル表示
    /// modalPresentationStyleやmodalTransitionStyleを設定しなければ下から出てくる
    private func presentModalWithNavigation(_ controller: UIViewController){
        let nc = UINavigationController(rootViewController: controller)
        targetViewController?.present(nc, animated: true, completion: nil)
    }

    /// クロスディゾルブでスーッとモーダル表示
    private func showTranslucenceView(_ controller: UIViewController) {
        controller.modalPresentationStyle = .overFullScreen
        controller.modalTransitionStyle = .crossDissolve
        targetViewController?.present(controller, animated: true, completion: nil)
    }

    // ログインに飛ぶ
    func goToLogin(){
        let storyboard = UIStoryboard(name: "Login", bundle: nil)
        let controller = storyboard.instantiateViewController(withIdentifier: "LoginViewController")
        show(controller)
    }

}

class AudioPlayer: NSObject, AVAudioPlayerDelegate {

    static let shared = AudioPlayer()
    private override init(){
    }

    var audioPlayer: AVAudioPlayer?

    enum MusicName: String {
        case loopmusic
    }

    func playMusic(_ name: MusicName){

    }

    func stop(){
        audioPlayer?.stop()
    }
}

// レイヤーをAVPlayerLayerにする為のラッパークラス.
final class AVPlayerView: UIView {

    func setPlayer(_ player: AVPlayer) {
        let layer = self.layer as! AVPlayerLayer
        layer.player = player
    }
}

// パスからassetを生成.
let path = Bundle.main.path(forResource: "movie_parts", ofType: "mp4") ?? ""
let fileURL = URL(fileURLWithPath: path)
let avAsset = AVURLAsset(url: fileURL, options: nil)

// AVPlayerに再生させるアイテムを生成.
let playerItem = AVPlayerItem(asset: avAsset)
// AVPlayerを生成.
videoPlayer = AVPlayer(playerItem: playerItem)

// 動画再生完了の監視
NotificationCenter.default.addObserver(self, selector: #selector(MovieViewController.movieEnd(_:)), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)