How to detect which video ended when using multiple AVPlayers? - ios

Question

I am playing two videos side by side on screen so I have two instances of AVPlayer. I am detecting end of video playback using notification which is working fine. My selector(playerDidFinishPlaying) is getting called for both videos when they end.
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlaying), name: .AVPlayerItemDidPlayToEndTime, object: nil)
Now my problem is in the selector(playerDidFinishPlaying), I want to detect for which avplayer it got called? How can I uniquely identify the AVPlayer whose video ended?

Answer 1

Another idea. Updated #black_pearl's method
Different notification registration , with different notification methods.
var player = AVPlayer()
var playerTwo = AVPlayer()
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlay(_:)), name: .AVPlayerItemDidPlayToEndTime, object: player.currentItem)
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishMusic(_:)), name: .AVPlayerItemDidPlayToEndTime, object: playerTwo.currentItem)
}
#objc func playerDidFinishPlay(_ noti: Notification) {
if let p = noti.object as? AVPlayerItem, p == player.currentItem {
print("1")
}
}
#objc func playerDidFinishMusic(_ noti: Notification) {
if let p = noti.object as? AVPlayerItem, p == playerTwo.currentItem{
print("2")
}
}

Answer 2

via the object of notification to uniquely identify,
post notification .AVPlayerItemDidPlayToEndTime with object of player.currentItem
NotificationCenter
.default
.addObserver(self,
selector: #selector(self.moviePlayBackFinished(sender:)),
name: .AVPlayerItemDidPlayToEndTime,
object: player.currentItem)
The easy way:
The following code works, the drawback is that when one player ends, the notify method will be called twice.
var player = AVPlayer()
var playerTwo = AVPlayer()
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlay(_:)), name: .AVPlayerItemDidPlayToEndTime, object: player.currentItem)
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlay(_:)), name: .AVPlayerItemDidPlayToEndTime, object: playerTwo.currentItem)
}
#objc func playerDidFinishPlay(_ noti: Notification) {
if let p = noti.object as? AVPlayerItem, p == player.currentItem{
print("1")
}
if let p = noti.object as? AVPlayerItem, p == playerTwo.currentItem{
print("2")
}
}
The track state way:
With Notification, you can see that, there is a player ended.
You need to find the player.
The player must obey two rules, it has began , and it was over.
Use var hasPlay: (one: Bool, two: Bool), to find the player just playing.
Use isPlaying to find the player, no longer played.
var player = AVPlayer()
var playerTwo = AVPlayer()
var hasPlay: (one: Bool, two: Bool) = (false, false)
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlay), name: .AVPlayerItemDidPlayToEndTime, object: nil)
}
#IBAction func beepPressed(_ sender: UIButton) {
hasPlay.one = true
let url = // ...
player = AVPlayer(url: url!)
player.play()
}
#IBAction func beepPressedTwo(_ sender: UIButton) {
hasPlay.two = true
let url = // ...
playerTwo = AVPlayer(url: url!)
playerTwo.play()
}
#objc func playerDidFinishPlay() {
if player.isPlaying == false, hasPlay.one == true{
hasPlay.one = false
print("1")
}
if playerTwo.isPlaying == false, hasPlay.two == true{
hasPlay.two = false
print("2")
}
}
}
extension AVPlayer {
var isPlaying: Bool {
return rate != 0 && error == nil
}
}

Answer 3

Updated #dengST30's method one, with some ease.
with two notification registered, any end method will be called twice.
So it needs to add some mutually exclusive.
var player = AVPlayer()
var playerTwo = AVPlayer()
var justEnded: (one: Bool, two: Bool) = (false, false)
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlay(_:)), name: .AVPlayerItemDidPlayToEndTime, object: player.currentItem)
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlay(_:)), name: .AVPlayerItemDidPlayToEndTime, object: playerTwo.currentItem)
playButton.tintColor = .systemBlue
}
#objc func playerDidFinishPlay(_ noti: Notification) {
if let p = noti.object as? AVPlayerItem, p == player.currentItem {
if justEnded.one == false{
print("1")
}
justEnded.one.toggle()
}
if let p = noti.object as? AVPlayerItem, p == playerTwo.currentItem{
if justEnded.two == false{
print("2")
}
justEnded.two.toggle()
}
}