Tap on button in table view and song will play in each of rows using swift

Question

I have a list of songs which should be played in each of row in table view by tapping on the button. I've made a button in custom cell and a protocol which used to display the tap in our view controller. For ex. when we tap on second button in cell, it should play second song, when we tap on third button, its play third song.

My ViewController:

import UIKit
import AVFoundation

class BeatPackViewController: UIViewController {
    
    @IBOutlet weak var beatTableView: UITableView!
    @IBOutlet weak var coverImage: UIImageView!
    @IBOutlet weak var looppackNameLabel: UILabel!
    @IBOutlet weak var producerNameLabel: UILabel!
    @IBOutlet weak var backButtonLabel: UIButton!

    let data = DataLoader().beatData
    var songs: [String] = []
    
    var audioPlayer = AVAudioPlayer()
    
    func getSongs() -> [String] {
        var names: [String] = []
        let path = Bundle.main.resourceURL?.appendingPathComponent("songs")
        do {
            let songs = try FileManager.default.contentsOfDirectory(at: path!, includingPropertiesForKeys: nil, options: FileManager.DirectoryEnumerationOptions.skipsHiddenFiles)
            
            for song in songs {
                let strArray = song.absoluteString.components(separatedBy: "/")
                var songName = strArray[strArray.count - 1].replacingOccurrences(of: "%20", with: " ")
                songName = songName.replacingOccurrences(of: ".wav", with: "")
                names.append(songName)
            }
        } catch {}
        
        return names
    }
    
    func playSong(index: Int) {
        do {
            let songPath = Bundle.main.path(forResource: songs[index], ofType: ".wav", inDirectory: "songs")
            try audioPlayer = AVAudioPlayer(contentsOf: URL(fileURLWithPath: songPath!))
            audioPlayer.play()
        } catch {}
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        beatTableView.delegate = self
        beatTableView.dataSource = self
        
        self.view.backgroundColor = SettingsService.sharedService.backgroundColor
        coverImage.layer.cornerRadius = 20
        coverImage.layer.shadowRadius = 7
        coverImage.layer.shadowOpacity = 0.8
        coverImage.layer.shadowOffset = CGSize(width: 3, height: 3)
        coverImage.layer.shadowColor = UIColor.black.cgColor
        coverImage.clipsToBounds = true
    }
    
}



extension BeatPackViewController: UITableViewDataSource, UITableViewDelegate {
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 80
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return data.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = beatTableView.dequeueReusableCell(withIdentifier: "firstLoopCell", for: indexPath as IndexPath) as! CustomLoopsCell
        cell.loopNameLabel.text = data[indexPath.row].loop_name
        cell.delegate = self
        cell.playButtonOutlet.addTarget(self, action: #selector(CustomLoopsCell.playButtonPressed(_:)), for: .touchUpInside)
        //        cell.instrumentLabel.text = data[indexPath.row].loops[indexPath.row].Instrument
        //        cell.producerLabel.text = data[indexPath.row].loops[indexPath.row].producer
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        didTapButton()
    }
    
}

extension BeatPackViewController: CustomLoopsDelegate {
    func didTapButton() {
    }
    
}

My CustomCell

import UIKit
import AVFoundation

protocol CustomLoopsDelegate: AnyObject {
    func didTapButton()
}

class CustomLoopsCell: UITableViewCell {
    
    weak var delegate: CustomLoopsDelegate?
    
    var songs: [String] = []
    
    var audioPlayer = AVAudioPlayer()
    
    
    @IBOutlet weak var loopNameLabel: UILabel!
    @IBOutlet weak var producerLabel: UILabel!
    @IBOutlet weak var instrumentLabel: UILabel!
    @IBOutlet weak var playButtonOutlet: UIButton!
    
    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }
    
    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        
        // Configure the view for the selected state
    }
    
    @IBAction func playButtonPressed(_ sender: UIButton) {
        delegate?.didTapButton()
    }
}

Answer 1

as Paulw11 said don't use btn action in cellForRowAt you need to add delegate. check code i tried regarding yours. here you don't need didSelect method

BeatPackViewController.Swift

class BeatPackViewController: UIViewController, CustomLoopsDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell : CustomLoopsCell = tableView.dequeueReusableCell(withIdentifier: "firstLoopCell", for: indexPath) as! CustomLoopsCell
        cell.delegate = self
        return cell
    }
    
    func btnUseTap(cell: CustomLoopsCell) {
        let indexPath = self.tableview.indexPath(for: cell)
        //play song here
    }

}

CustomLoopsCell.Swift

protocol CustomLoopsDelegate: AnyObject {
    func btnUseTap(cell: CustomLoopsCell)
}

class CustomLoopsCell: UITableViewCell {
    
    weak var delegate: CustomLoopsDelegate?
    
    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }
    
    @IBAction func btnUse(_ sender: Any) {
        delegate?.btnUseTap(cell: self)
    }
    
}

Update song play code

let audioData = try! Data(contentsOf: url, options: .mappedIfSafe)
        try! AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback)
        try! AVAudioSession.sharedInstance().setActive(true)
        do {
            self.audioPlayer = try AVAudioPlayer(data: audioData, fileTypeHint: AVFileType.m4a.rawValue)
            self.audioPlayer.prepareToPlay()
            self.audioPlayer.play()
            if isVideoMute {
                self.audioPlayer.volume = 0
            }else {
                self.audioPlayer.volume = 1
            }
        } catch let error {
            print(error.localizedDescription)
        }