How do you loop AVPlayer in Swift?

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Swift 5 (iOS 10.0+)

var playerLooper: AVPlayerLooper! // should be defined in class
var queuePlayer: AVQueuePlayer!
...

let asset: AVAsset = ... // AVAsset with its 'duration' property value loaded
let playerItem = AVPlayerItem(asset: asset)
self.queuePlayer = AVQueuePlayer(playerItem: playerItem)

// Create a new player looper with the queue player and template item
self.playerLooper = AVPlayerLooper(player: queuePlayer, templateItem: playerItem)

< iOS 10.0

All below works in any iOS version. But, for < iOS 10.0 it’s the only solution.

Swift 4

var player: AVPlayer!

...

NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: self.player.currentItem, queue: .main) { [weak self] _ in
    self?.player?.seek(to: CMTime.zero)
    self?.player?.play()
}

Swift 3

NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: self.player.currentItem, queue: .main) { [weak self] _ in
    self?.player?.seek(to: kCMTimeZero)
    self?.player?.play()
}

Swift 2

After AVPlayerItem is configured and player is created:

var player: AVPlayer!

...

// Invoke after player is created and AVPlayerItem is specified
NSNotificationCenter.defaultCenter().addObserver(self,
    selector: "playerItemDidReachEnd:",
    name: AVPlayerItemDidPlayToEndTimeNotification,
    object: self.player.currentItem)

...
 
func playerItemDidReachEnd(notification: NSNotification) {
    self.player.seekToTime(kCMTimeZero)
    self.player.play()
}

Don’t forget to import AVFoundation

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