Plays a sound file in Swift for usage in iOS/Mac apps with something like a button or gesture trigger.

playSound.swift

import AVFoundation

var player: AVAudioPlayer?

func playSound(name: String) {
    // Change extension as needed
    guard let url = Bundle.main.url(forResource: name, withExtension: "mp3") else { return }

    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback)
        try AVAudioSession.sharedInstance().setActive(true)

        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)

        guard let player = player else { return }

        player.play()

    } catch let error {
        print(error.localizedDescription)
    }
}