import UIKit
import AVFoundation

class ViewController: UIViewController{

    var player: AVAudioPlayer?

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func notePressed(_ sender: UIButton) {

        guard let url = Bundle.main.url(forResource: "note1", withExtension: "wav") else { return }

        do {
            try AVAudioSession.sharedInstance().setCategory((AVAudioSession.Category.playback), mode: .default, options: [])
            try AVAudioSession.sharedInstance().setActive(true)


            /* The following line is required for the player to work on iOS 11. Change the file type accordingly*/
            player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.wav.rawValue)

            /* iOS 10 and earlier require the following line:
             player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileTypeMPEGLayer3) *//

            guard let player = player else { return }

            player.play()

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

    }

}

Swift 5“AVFoundation”\

简单的代码，没有错误处理，从本地路径播放音频

import AVFoundation
var audio:AVPlayer!

func stopAlarm() {
    // To pause or stop audio in swift 5 audio.stop() isn't working
    audio.pause()
}

func playAlarm() {
    // need to declare local path as url
    let url = Bundle.main.url(forResource: "Alarm", withExtension: "mp3")
    // now use declared path 'url' to initialize the player
    audio = AVPlayer.init(url: url!)
    // after initialization play audio its just like click on play button
    audio.play()
}

import UIKit
import AVFoundation

class ViewController: UIViewController{

    var player: AVAudioPlayer?

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func notePressed(_ sender: UIButton) {

        guard let url = Bundle.main.url(forResource: "note1", withExtension: "wav") else { return }

        do {
            try AVAudioSession.sharedInstance().setCategory((AVAudioSession.Category.playback), mode: .default, options: [])
            try AVAudioSession.sharedInstance().setActive(true)


            /* The following line is required for the player to work on iOS 11. Change the file type accordingly*/
            player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.wav.rawValue)

            /* iOS 10 and earlier require the following line:
             player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileTypeMPEGLayer3) *//

            guard let player = player else { return }

            player.play()

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

    }

}

最好使用AVFoundation。 它提供了所有与视听媒体工作的必要条件。

更新:兼容Swift 2, Swift 3和Swift 4，正如你们中的一些人在评论中建议的那样。

斯威夫特2.3

import AVFoundation

var player: AVAudioPlayer?

func playSound() {
    let url = NSBundle.mainBundle().URLForResource("soundName", withExtension: "mp3")!

    do {
        player = try AVAudioPlayer(contentsOfURL: url)
        guard let player = player else { return }

        player.prepareToPlay()
        player.play()

    } catch let error as NSError {
        print(error.description)
    }
}

斯威夫特3

import AVFoundation

var player: AVAudioPlayer?

func playSound() {
    guard let url = Bundle.main.url(forResource: "soundName", withExtension: "mp3") else { return }

    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        try AVAudioSession.sharedInstance().setActive(true)

        let player = try AVAudioPlayer(contentsOf: url)

        player.play()

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

Swift 4(兼容iOS 13)

import AVFoundation

var player: AVAudioPlayer?

func playSound() {
    guard let url = Bundle.main.url(forResource: "soundName", withExtension: "mp3") else { return }

    do {
        try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default)            
        try AVAudioSession.sharedInstance().setActive(true)

        /* The following line is required for the player to work on iOS 11. Change the file type accordingly*/
        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)

        /* iOS 10 and earlier require the following line:
        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileTypeMPEGLayer3) */

        guard let player = player else { return }

        player.play()

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

请确保更改您的曲调的名称以及扩展名。 文件需要正确导入(Project Build Phases > Copy Bundle Resources)。你可以把它放在资产里。xcassets为 更大的便利。

对于短音频文件，你可能想要使用非压缩音频格式，如。wav，因为它们具有最好的质量和低cpu消耗。对于较短的声音文件来说，较高的磁盘空间消耗应该不是什么大问题。文件越长，你可能想要使用压缩格式，如。mp3等。检查CoreAudio的兼容音频格式。

有趣的事实:有一些整洁的小库可以让播放声音更容易。：） 例如:SwiftySound

Swift 4(兼容iOS 12)

var player: AVAudioPlayer?

let path = Bundle.main.path(forResource: "note\(sender.tag)", ofType: "wav")
let url = URL(fileURLWithPath: path ?? "")
    
do {
   player = try AVAudioPlayer(contentsOf: url)
   player?.play()
} catch let error {
   print(error.localizedDescription)
}

Swift 4和iOS 12测试:

import UIKit
import AVFoundation
class ViewController: UIViewController{
    var player: AVAudioPlayer!
    override func viewDidLoad() {
        super.viewDidLoad()
    }

    func playTone(number: Int) {
        let path = Bundle.main.path(forResource: "note\(number)", ofType : "wav")!
        let url = URL(fileURLWithPath : path)
        do {
            player = try AVAudioPlayer(contentsOf: url)
            print ("note\(number)")
            player.play()
        }
        catch {
            print (error)
        }
    }

    @IBAction func notePressed(_ sender: UIButton) {
        playTone(number: sender.tag)
    }
}