如何檢測 AVPlayer 視頻何時結束播放？

Question

我正在使用 AVPlayer 在 Swift 中播放本地視頻文件 (mp4)。 有誰知道如何檢測視頻何時播放完畢？ 謝謝

Answer 1

要獲得AVPlayerItemDidPlayToEndTimeNotification您的對象需要是AVPlayerItem 。

為此，只需使用AVPlayer上的.currentItem屬性

現在，您將在視頻結束后收到通知！

看我的例子：

let videoPlayer = AVPlayer(URL: url)       

NSNotificationCenter.defaultCenter().addObserver(self, selector: "playerDidFinishPlaying:",
        name: AVPlayerItemDidPlayToEndTimeNotification, object: videoPlayer.currentItem)

func playerDidFinishPlaying(note: NSNotification) {
    print("Video Finished")
}

斯威夫特 3

let videoPlayer = AVPlayer(URL: url)       

NotificationCenter.default.addObserver(self, selector: Selector(("playerDidFinishPlaying:")), 
       name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: videoPlayer.currentItem)
    
func playerDidFinishPlaying(note: NSNotification) {
    print("Video Finished")
}

不要忘記刪除deinit中的觀察者

斯威夫特 4, 5

NotificationCenter.default
    .addObserver(self,
    selector: #selector(playerDidFinishPlaying),
    name: .AVPlayerItemDidPlayToEndTime,
    object: videoPlayer.currentItem
)

Answer 2

斯威夫特 3.0

let videoPlayer = AVPlayer(URL: url)

NotificationCenter.default.addObserver(self, selector:#selector(self.playerDidFinishPlaying(note:)),name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: player.currentItem)

@objc func playerDidFinishPlaying(note: NSNotification){
        print("Video Finished")
    }

Answer 3

斯威夫特 4.2 版本：

var player: AVPlayer!
  //
  //
// Configure Player
override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)

    let filepath: String? = Bundle.main.path(forResource: "selectedFileName", ofType: "mp4")
    if let filepath = filepath {
        let fileURL = URL.init(fileURLWithPath: filepath)
        player = AVPlayer(url: fileURL)
        let playerLayer = AVPlayerLayer(player: player)
        // Register for notification
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(playerItemDidReachEnd),
                                                         name: NSNotification.Name.AVPlayerItemDidPlayToEndTime,
                                                         object: nil) // Add observer

        playerLayer.frame = self.view.bounds
        self.view.layer.addSublayer(playerLayer)
        player.play()
    }
}
// Notification Handling
@objc func playerItemDidReachEnd(notification: NSNotification) {
    player.seek(to: CMTime.zero)
    player.play()
}
// Remove Observer
deinit {
    NotificationCenter.default.removeObserver(self)
}

Answer 4

對於 SWIFT 3.0 ，這工作正常

class PlayVideoViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(PlayVideoViewController.finishVideo), name: NSNotification.Name.AVPlayerItemDidPlayToEndTimeNotification, object: nil)
    }

    func finishVideo()
    {
        print("Video Finished")
    }
}

Answer 5

斯威夫特 4.0

這個對我有用。 感謝@Channel

    private func playVideo(fileURL: String) {

            // Create RUL object
            let url = URL(string: fileURL)

            // Create Player Item object
            let playerItem: AVPlayerItem = AVPlayerItem(url: url!)
            // Assign Item to Player
            let player = AVPlayer(playerItem: playerItem)

            // Prepare AVPlayerViewController
            let videoPlayer = AVPlayerViewController()
            // Assign Video to AVPlayerViewController
            videoPlayer.player = player

            NotificationCenter.default.addObserver(self, selector: #selector(myViewController.finishVideo), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)

            // Present the AVPlayerViewController
            present(videoPlayer, animated: true, completion: {
                    // Play the Video
                    player.play()
            })

    }

    @objc func finishVideo()
    {
            print("Video Finished")
    }

Answer 6

如果你喜歡使用 Combine：

private var cancelBag: Set<AnyCancellable> = []

NotificationCenter.default.publisher(for: .AVPlayerItemDidPlayToEndTime)
.sink { _ in
    player.seek(to: CMTime.zero)
    player.play()
}
.store(in: &cancelBag)

Answer 7

2019

真的就是這么簡單

NotificationCenter.default.addObserver(
    self,
    selector: #selector(fileComplete),
    name: NSNotification.Name.AVPlayerItemDidPlayToEndTime,
    object: nil
)

（對象為 nil 很好。）

接着

@objc func fileComplete() {
    print("IT'S DONE!")
}

Answer 8

斯威夫特 3.0

let videoPlayer = AVPlayer(URL: url)
NotificationCenter.default.addObserver(self, selector:#selector(self.playerDidFinishPlaying(note:)),name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: player.currentItem)

func playerDidFinishPlaying(note: NSNotification){
    //Called when player finished playing
}

Answer 9

對於 SWIFT 3.0

這里 'fullUrl' 是視頻的 URL 並確保 URL 中沒有空格，您應該將 'Space' 替換為 '%20' 以便 URL 可以工作文件。

  let videoURL = NSURL(string: fullUrl)
  let player = AVPlayer(url: videoURL! as URL)

  playerViewController.delegate = self
  playerViewController.player = player
  self.present(playerViewController, animated: false) {

    self.playerViewController.player!.play()

    NotificationCenter.default.addObserver(self, selector: #selector(yourViewControllerName.playerDidFinishPlaying), name: Notification.Name.AVPlayerItemDidPlayToEndTime, object: self.player?.currentItem)
  }

在您的視圖控制器中添加以下給定方法。

func playerDidFinishPlaying(){    
print("Video Finished playing in style")
}

Answer 10

我知道這里有很多公認的答案......

但是，另一種方法可能是將邊界時間觀察器添加到您的 AVPlayer。 您必須擁有視頻的持續時間，您可以從player.currentItem獲得，然后將其添加為您想要的時間邊界。

fileprivate var videoEndObserver: Any?

func addVideoEndObserver() {
    guard let player = YOUR_VIDEO_PLAYER else { return }

    // This is just in case you are loading a video from a URL.
    guard let duration = player.currentItem?.duration, duration.value != 0 else {
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, execute: { [weak self] in
            self?.addVideoEndObserver()
        })

        return
    }

    let endTime = NSValue(time: duration - CMTimeMakeWithSeconds(0.1, duration.timescale))
    videoEndObserver = player.addBoundaryTimeObserver(forTimes: [endTime], queue: .main, using: {
        self.removeVideoEndObserver()

        // DO YOUR STUFF HERE...
    })
}

func removeVideoEndObserver() {
    guard let observer = videoEndObserver else { return }

    videoPlayer.player?.removeTimeObserver(observer)
    videoEndObserver = nil
}

Answer 11

在 Swift 3 和 RxSwift 3.5 中，你所要做的就是：

override func viewDidLoad() {
    super.viewDidLoad()

    NotificationCenter.default.rx.notification(Notification.Name.AVPlayerItemDidPlayToEndTime)
        .asObservable().subscribe(onNext: { [weak self] notification in

            //Your action

        }).addDisposableTo(disposeBag)
}

Answer 12

使用Combine ，並確保通知來自您感興趣的 AVPlayerItem 而不僅僅是任何一個。 我一次玩多個項目，所以這也適用於那種情況。

private var subscriptions: Set<AnyCancellable> = []

NotificationCenter.default.publisher(for: .AVPlayerItemDidPlayToEndTime, object: player.currentItem)
    .receive(on: RunLoop.main)
    .sink { [weak self] notification in
        guard let item = notification.object as? AVPlayerItem else { return }
        if item == self?.player.currentItem {
         //.... Here you know it was the item you are interested in that played to end and not just any
        }
    }
    .store(in: &subscriptions)

Answer 13

NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: nil, queue: .main) { noti in
        guard let item = noti.object as? AVPlayerItem else{
            return
        }
        //DidPlayToEndTime
    }

Answer 14

func shareEditedVedio() -> AVPlayer {
    let editedVedioPlayer = AVPlayer(url: self.vedioData.vedioURLWithAddedSounds!)
    NotificationCenter.default.addObserver(self, selector:#selector(self.playerDidFinishPlaying(note:)),name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: editedVedioPlayer.currentItem)
    return editedVedioPlayer
}


@objc func playerDidFinishPlaying(note: NSNotification){
    //Called when player finished playing
}

Answer 15

我遇到了通知永遠不會被調用的問題，在 AVPlayerViewController 的演示文稿中設置通知為我解決了這個問題：

func presentVideo(url:URL) {
        let player = AVPlayer(url: url)
        let playerViewController = AVPlayerViewController()
        playerViewController.player = player
        
        self.present(playerViewController, animated: true) {
            DispatchQueue.main.async {
                playerViewController.player!.play()
                //NOTE: The notification must be created here for it to work as expected
                NotificationCenter.default.addObserver(self, selector: #selector(self.videoDidEnd), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)
            }
        }
    }

Answer 16

SWIFT 5 更新

@objc function 的觀察者方法不是原生的。 最好使用swift 5中的事件發布者。非常簡單。

在結構中聲明以下內容：

var pub = NotificationCenter.default.publisher(for: .AVPlayerItemDidPlayToEndTime)

然后在任何視圖上，添加

.onReceive(pub) { (output) in
    print("Video Finished")
}