How do next track AVPlayer - ios

Question

I tried for a few days to make a button which includes the next song but I can not
Here is my question
How to put the next екфсл at the click of a button with avPlayer
it is my code
class ViewControllerAudioDetail: UIViewController {
var avPlayer:AVQueuePlayer?
var status = false
fileprivate let seekDuration: Float64 = 10
fileprivate let seekDurationThirty: Float64 = 30
var mod = [Modal]()
#IBOutlet weak var ImageView: UIImageView!
#IBOutlet weak var startTime: UILabel!
#IBOutlet weak var endTime: UILabel!
#IBOutlet weak var sliderSong: UISlider!
#IBOutlet weak var name: UILabel!
#IBOutlet weak var Volume: UISlider!
#IBOutlet weak var iconChange: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
Volume.setThumbImage(UIImage(named:"Play.png"), for: .normal)
sliderSong.minimumValue = 0
sliderSong.maximumValue = 1
name.text = mod[thisSong].AudioName
ImageView.image = mod[0].ImageViewAudio
let url = URL(string: mod[thisSong].UrlName!)
let playerItem = AVPlayerItem(url: url!)
avPlayer = AVQueuePlayer(playerItem:playerItem)
let _ = avPlayer!.addPeriodicTimeObserver(forInterval: CMTime(seconds: 1, preferredTimescale: CMTimeScale(NSEC_PER_SEC)), queue: DispatchQueue.main) { [weak self] (time) in
let duration = CMTimeGetSeconds((self?.avPlayer!.currentItem!.asset.duration)!)
self?.sliderSong.value = Float(CMTimeGetSeconds(time)) / Float(duration)
}
let duration = CMTimeGetSeconds(avPlayer!.currentItem!.asset.duration)
let minutesTextOut = Int(duration) / 60 % 60
let secondsTextOut = Int(duration) % 60
let strDuration = String(format:"%02d:%02d", minutesTextOut, secondsTextOut)
endTime.text = strDuration
}
#IBAction func sliderSong(_ sender: UISlider) {
//перемотка аудиозвука
let duration = CMTimeGetSeconds(avPlayer!.currentItem!.asset.duration)
let value = sliderSong.value
let durationToSeek = Float(duration) * value
avPlayer?.seek(to: CMTimeMakeWithSeconds(Float64(durationToSeek),avPlayer!.currentItem!.duration.timescale)) { [](state) in
if (self.iconChange.currentImage?.isEqual(UIImage(named: "Play.png")))! {
self.avPlayer?.pause()
} else if (self.iconChange.currentImage?.isEqual(UIImage(named: "Pause.png")))!{
self.avPlayer?.play()
}
}
}
#IBAction func volume(_ sender: UISlider) {
avPlayer?.volume = sender.value
}
#IBAction func minusThirtySec(_ sender: Any) {
let playerCurrentTime = CMTimeGetSeconds((avPlayer?.currentTime())!)
var newTime = playerCurrentTime - seekDurationThirty
if newTime < 0 {
newTime = 0
}
let time2: CMTime = CMTimeMake(Int64(newTime * 1000 as Float64), 1000)
avPlayer?.seek(to: time2, toleranceBefore: kCMTimeZero, toleranceAfter: kCMTimeZero)
}
#IBAction func minusTenSec(_ sender: Any) {
let playerCurrentTime = CMTimeGetSeconds((avPlayer?.currentTime())!)
var newTime = playerCurrentTime - seekDuration
if newTime < 0 {
newTime = 0
}
let time2: CMTime = CMTimeMake(Int64(newTime * 1000 as Float64), 1000)
avPlayer?.seek(to: time2, toleranceBefore: kCMTimeZero, toleranceAfter: kCMTimeZero)
}
#IBAction func plusTenSec(_ sender: Any) {
guard let duration = avPlayer?.currentItem?.duration else{
return
}
let playerCurrentTime = CMTimeGetSeconds((avPlayer?.currentTime())!)
let newTime = playerCurrentTime + seekDuration
if newTime < (CMTimeGetSeconds(duration) - seekDuration) {
let time2: CMTime = CMTimeMake(Int64(newTime * 1000 as Float64), 1000)
avPlayer?.seek(to: time2, toleranceBefore: kCMTimeZero, toleranceAfter: kCMTimeZero)
}
}
#IBAction func plusThirtySec(_ sender: Any) {
guard let duration = avPlayer?.currentItem?.duration else{
return
}
let playerCurrentTime = CMTimeGetSeconds((avPlayer?.currentTime())!)
let newTime = playerCurrentTime + seekDurationThirty
if newTime < (CMTimeGetSeconds(duration) - seekDuration) {
let time2: CMTime = CMTimeMake(Int64(newTime * 1000 as Float64), 1000)
avPlayer?.seek(to: time2, toleranceBefore: kCMTimeZero, toleranceAfter: kCMTimeZero)
}
}
#IBAction func Next(_ sender: Any) {
let url = URL(string: mod[thisSong].UrlName!)
let playerItem = AVPlayerItem(url: url!)
avPlayer = AVQueuePlayer(playerItem:playerItem)
avPlayer?.insert(playerItem, after: playerItem)
avPlayer?.advanceToNextItem()
// if thisSong + 1 > mod.count {
// thisSong = 0
// } else {
// thisSong += 1
// }
//
//
// if thisSong != mod.count{
//
// name.text = mod[thisSong].AudioName
// player(urlSong:mod[thisSong].UrlName!)
// avPlayer?.play()
//
//
//
// }
}
#IBAction func Back(_ sender: Any) {
// if thisSong != 0{
// thisSong -= 1
// name.text = mod[thisSong].AudioName
// player(urlSong:mod[thisSong].UrlName!)
// avPlayer?.play()
//
//
// }
}
#IBAction func Play(_ sender: Any) {
if avPlayer?.rate == 0 {
avPlayer?.play()
avPlayer?.rate = 1.0
iconChange.setImage(UIImage(named:"Pause.png"), for: .normal)
avPlayer?.addPeriodicTimeObserver(forInterval: CMTimeMakeWithSeconds(1, 1), queue: nil, using: {
(CMTime) -> Void in
self.updateProgressBar()
})
} else {
avPlayer?.rate = 0.0
avPlayer?.pause()
iconChange.setImage(UIImage(named:"Play.png"), for: .normal)
}
}
func player(urlSong:String) {
}
func updateProgressBar(){
let timeNow = Int(avPlayer!.currentTime().value) / Int(avPlayer!.currentTime().timescale)
let minutesText = timeNow / 60
let secondsText = timeNow % 60
let duration = String(format:"%02d:%02d", minutesText, secondsText)
startTime.text = duration
}
And tableview from here I get the data
var thisSong = 0
class TableViewControllerAudioList: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
tableView.estimatedRowHeight = 50
tableView.rowHeight = UITableViewAutomaticDimension
}
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return modalsF.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! TableViewCellAudioList
cell.name.text = modalsF[indexPath.row].AudioName
cell.number.text = "\(indexPath.row + 1)"
thisSong = indexPath.row
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let vc = segue.destination as? ViewControllerAudioDetail
vc?.mod = [modalsF[(tableView.indexPathForSelectedRow?.row)!]]
}

Answer 1

Play the selected / current song
func play(at index: Int) {
audioPlayer.removeAllItems()
playerItem = audioItems[index]
playerItem?.seek(to: kCMTimeZero)
audioPlayer.insert(playerItem!, after: nil)
audioPlayer.play()
isPlaying = true
self.playAllSongsTableView.reloadData()
}
To play previuos song....
#IBAction func backWordAction(_ sender: UIButton) {
var index = audioItems.index(of: audioPlayer.currentItem!) ?? 0
if index > 0 {
index = index - 1
}
play(at: index)
}
To play next song....
#IBAction func forwordAction(_ sender: UIButton) {
var index = audioItems.index(of: audioPlayer.currentItem!) ?? 0
if index < (audioItems.count - 1) {
index = index + 1
}
play(at: index)
}

Answer 2

Using AVQueuePlayer instead of AVPlayer will let you directly add items;
AVQueuePlayer.insert(item: AVPlayerItem, after: AVPlayerItem?)
AVQueuePlayer.advanceToNextItem()
You can also initialize the player with an array of AVPlayerItems
AVQueuePlayer = AVQueuePlayer(items: [AVPlayerItem])

Answer 3

In its tableview I added func didSelectRowAt in which I wrote a global counter that received the cell number
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
thisSong = indexPath.row
}
And pass the data to the controller through prepareForSegue
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "listToDetail"{
let vc = segue.destination as? ViewControllerAudioDetail
vc?.mod = mod
}
}
In my detailed controller I created two buttons for the previous song and the next one
var avPlayer:AVPlayer?
var mod = [Modal]()
#IBAction func Next(_ sender: Any) {
if thisSong == mod.count - 1 {
thisSong = 0
} else {
thisSong += 1
}
if thisSong != mod.count{
avPlayer?.removeTimeObserver(sliderDuration)
name.text = mod[thisSong].AudioName
player(urlSong:mod[thisSong].UrlName!)
Status()
}
}
#IBAction func Back(_ sender: Any) {
if thisSong != 0 {
thisSong -= 1
} else {
thisSong = mod.endIndex
}
avPlayer?.removeTimeObserver(sliderDuration)
name.text = mod[thisSong].AudioName
player(urlSong:mod[thisSong].UrlName!)
Status()
}
And the function determines which was the status of the player and sets the same data
func Status(){
if status == true {
iconChange.setImage(UIImage(named:"Pause.png"), for: .normal)
avPlayer?.play()
} else {
iconChange.setImage(UIImage(named:"Play.png"), for: .normal)
avPlayer?.pause()
}
}
Here I create a player
func player(urlSong:String) {
let url = URL(string: urlSong)
let playerItem = AVPlayerItem(url: url!)
avPlayer = AVPlayer(playerItem:playerItem)
sliderDuration = avPlayer!.addPeriodicTimeObserver(forInterval: CMTime(seconds: 1, preferredTimescale: CMTimeScale(NSEC_PER_SEC)), queue: DispatchQueue.main) { [weak self] (time) in
let duration = CMTimeGetSeconds((self?.avPlayer!.currentItem!.asset.duration)!)
self?.sliderSong.value = Float(CMTimeGetSeconds(time)) / Float(duration)
}
let duration = CMTimeGetSeconds(avPlayer!.currentItem!.asset.duration)
let minutesTextOut = Int(duration) / 60 % 60
let secondsTextOut = Int(duration) % 60
let strDuration = String(format:"%02d:%02d", minutesTextOut, secondsTextOut)
endTime.text = strDuration
}