【Swift5】動画をループ再生する #Swift

環境

x-code10.2.1
Swift5

要件

動画をループ再生する(動画終了時に巻き戻す)
動画のアスペクト比は維持する
動画の拡張子は、m4v、mp4、movのいずれかとする

実装

ViewController.swift


import UIKit
import AVFoundation

class ViewController: UIViewController {

    /// AVPlayerViewを乗せるView
    @IBOutlet weak var videoView: UIView!

    private let playerView = AVPlayerView()

    override func viewDidLoad() {
        super.viewDidLoad()

        // playerViewをUIViewに追加
        playerView.frame = CGRect(x: videoView.frame.origin.x ,
                                  y: videoView.frame.origin.y,
                                  width: videoView.frame.width,
                                  height: videoView.frame.height)
        // 動画の終了時に巻き戻し再生する
        NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidReachEnd(_:)), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)

        if let playURL = URL(string: "hoge.mp4") {
            self.playerView.player = AVPlayer(url: playURL)
            self.playerView.player?.actionAtItemEnd = AVPlayer.ActionAtItemEnd.none
            // アスペクト比を維持
            self.playerView.setVideoFillMode(mode: AVLayerVideoGravity.resizeAspect.rawValue)
            self.videoView.addSubview(self.playerView)
            // 動画を再生
            self.playerView.player?.play()
        }
    }

    /// リピート
    @objc func endVideo() {
        playerView.player?.currentItem?.seek(to: CMTime.zero, completionHandler: nil)
    }

    /// 動画終了時
    ///
    /// - Parameter notification: Notification
    @objc private func playerItemDidReachEnd(_ notification: Notification) {
        // 動画を最初に巻き戻す
        self.playerView.player?.currentItem?.seek(to: CMTime.zero, completionHandler: nil)
    }
}

final class AVPlayerView: UIView {

    var player: AVPlayer? {
        get {
            let layer: AVPlayerLayer = self.layer as! AVPlayerLayer
            return layer.player
        }
        set(newValue) {
            let layer: AVPlayerLayer = self.layer as! AVPlayerLayer
            layer.player = newValue
        }
    }

    // MARK: - OverrideMethod

    override public class var layerClass: Swift.AnyClass {
        return AVPlayerLayer.self
    }

    // MARK: - Public Method

    /// アスペクト比を維持
    ///
    /// - Parameter mode: AVLayerVideoGravity
    func setVideoFillMode(mode: String) {
        let layer: AVPlayerLayer = self.layer as! AVPlayerLayer
        layer.videoGravity = AVLayerVideoGravity(rawValue: mode)
    }
}

【Swift5】動画をループ再生する

環境

要件

実装

参考