How to loop videos with AVQueuePlayer after it completes - ios

Question

I have an array of URLs that I then turn into an array of AVPlayerItems and use AVQueuePlayer to loop through the videos- usually 1-7 videos at a time. However when it stops I am not sure how to start it again to play the same array of videos until the user switches to a different view controller.
in viewDidLoad this creates the array of playerItems
//creates playerItems to play videos in a queue
postURLs?.forEach{(url) in
let asset = AVAsset(url: url)
let playerItem = AVPlayerItem(asset: asset)
playerItems.append(playerItem)
}
public func playVideo() {
player = AVQueuePlayer(items: playerItems)
player.seek(to: CMTime.init(value: 0, timescale: 1))
playerLayer = AVPlayerLayer(player:player)
playerLayer.frame = self.lifieView.frame
lifieView.layer.addSublayer(playerLayer)
player.play()
//restart video maybe? Tested but did not work - hits function
NotificationCenter.default.addObserver(
forName: .AVPlayerItemDidPlayToEndTime,
object: nil,
queue: nil) { [weak self] _ in self?.restart2() }
}
//this is test function to restart (works with AVPlayer with single video)
private func restart2(){
player.seek(to: CMTime.zero)
player.play()
}

Answer 1

I got it working after much research and testing.
What I did was change the restart function to first remove all items from the player, then go through the array of playerItems and add them back into the queue- then have the player start back at the beginning.
func restartPlayer(){
player.removeAllItems()
playerItems.forEach{
player.insert($0, after:nil)
}
player.seek(to: .zero)
}