AVQueuePlayer won’t stop playing - arrays

Question

If a person presses the button 10 times, then they will hear 10 different lists of songs being played continuously. I want it to be that if a person presses 10 times, they will only be listening to one list of songs. I'm basically trying to create a reset button.
var myQueuePlayer: AVQueuePlayer?
var avItems: [AVPlayerItem] = []
func audio () {
var items: [String] = ["one", "two", "three", "four", "five"]
items.shuffle()
for clip in items {
guard let url = Bundle.main.url(forResource: clip, withExtension: ".mp3") else {
// mp3 file not found in bundle - so crash!
fatalError("Could not load \(clip).mp3")
}
avItems.append(AVPlayerItem(url: url))
//button.isHidden = true
}
}
#IBAction func didTapButton() {
audio()
if myQueuePlayer == nil {
// instantiate the AVQueuePlayer with all avItems
myQueuePlayer = AVQueuePlayer(items: avItems)
} else {
// stop the player and remove all avItems
myQueuePlayer?.removeAllItems()
// add all avItems back to the player
avItems.forEach {
myQueuePlayer?.insert($0, after: nil)
}
}
// seek to .zero (in case we added items back in)
myQueuePlayer?.seek(to: .zero)
// start playing
myQueuePlayer?.play()
}

Answer 1

Here is a very simple example.
This assumes 5 .mp3 files in your bundle, and 4 buttons:
Play / Restart
Pause
Resume
Shuffle and Play
connected to the #IBAction funcs:
class TestAVQueuViewController: UIViewController {
var myQueuePlayer: AVQueuePlayer?
var avItemsArray: [AVPlayerItem] = []
override func viewDidLoad() {
super.viewDidLoad()
// assuming I have 5 .mp3 files in the bundle, named:
let mySongs: [String] = [
"clip1", "clip2", "clip3", "clip4", "clip5",
]
// build the array of URLs for the song files
for clip in mySongs {
if let url = Bundle.main.url(forResource: clip, withExtension: ".mp3") {
avItemsArray.append(AVPlayerItem(url: url))
} else {
print("Could not get URL for \(clip).mp3")
}
}
if avItemsArray.count == 0 {
fatalError("Failed to get URL for ANY songs!")
}
}
func playQueue() -> Void {
// if first time
if myQueuePlayer == nil {
// instantiate the AVQueuePlayer
myQueuePlayer = AVQueuePlayer()
}
guard let player = myQueuePlayer else {
// I suppose it's possible that AVQueuePlayer() failed to instantiate
// so print a message to debug console and return
print("AVQueuePlayer failed to instantiate!")
return
}
// this will make sure the player is stopped and remove any remaining avItems
player.removeAllItems()
// every time this is called,
// loop through and reset the time on each avItem
for item in avItemsArray {
item.seek(to: .zero, completionHandler: nil)
}
// add avItems to the player
avItemsArray.forEach {
player.insert($0, after: nil)
}
// start playing
player.play()
}
#IBAction func playRestartTapped(_ sender: Any) {
playQueue()
}
#IBAction func pauseTapped(_ sender: Any) {
guard let player = myQueuePlayer, player.items().count > 0 else {
return
}
player.pause()
}
#IBAction func resumeTapped(_ sender: Any) {
guard let player = myQueuePlayer, player.items().count > 0 else {
return
}
player.play()
}
#IBAction func restartShuffledTapped(_ sender: Any) {
// shuffle the items
avItemsArray.shuffle()
playQueue()
}
}