Avplayer is not playing with swift 3 (Xcode 8) - swift3

Question

please help me log is shown playing but no sound is heard
let url = URL(string: "https://s3.amazonaws.com/kargopolov/BlueCafe.mp3")
let playerItem = AVPlayerItem(url: url! as URL)
let player=AVPlayer(playerItem: playerItem)
player.volume=1.0
player.play()
if (player.rate != 0 && player.error == nil) {
print("playing")
}
else
{
print("error",player.error)
}

Answer 1

You need a to assign the player to a variable that doesn't go out of scope, eg
class ViewControllerA: UIViewController {
var avPlayer: AVPlayer!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view
}
override func viewDidAppear(_ animated: Bool) {
let videoURL = NSURL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
avPlayer = AVPlayer(url: videoURL! as URL)
let playerLayer = AVPlayerLayer(player: avPlayer)
playerLayer.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.width * 3.0 / 4.0)
self.view.layer.addSublayer(playerLayer)
avPlayer.play()
}
}

Answer 2

Declare Player Variable before
var playerT : AVPlayer!
Now you able to play song from url
let url = URL(string: "https://s3.amazonaws.com/kargopolov/BlueCafe.mp3")
playerT = AVPlayer(url: url!)
playerT.volume = 1.0
playerT.play()
if playerT.rate != 0 && playerT.error == nil{
print("Playing")
}else{
print("Error Playing")
}