import AVFoundation

import AudioToolbox

public final class MP3Player : NSObject {
    
    // Singleton class
    static let shared:MP3Player = MP3Player()
    
    private var player: AVAudioPlayer? = nil
    
    // Play only mp3 which are stored in the local
    public func playLocalFile(name:String) {
        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)
        }
    }
}

调用这个函数

MP3Player.shared.playLocalFile(name: "JungleBook")

import AVFoundation

import AudioToolbox

public final class MP3Player : NSObject {
    
    // Singleton class
    static let shared:MP3Player = MP3Player()
    
    private var player: AVAudioPlayer? = nil
    
    // Play only mp3 which are stored in the local
    public func playLocalFile(name:String) {
        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)
        }
    }
}

调用这个函数

MP3Player.shared.playLocalFile(name: "JungleBook")

首先导入这些库

import AVFoundation

import AudioToolbox    

像这样设置委托

   AVAudioPlayerDelegate

在按钮动作或其他动作上写这样漂亮的代码:

guard let url = Bundle.main.url(forResource: "ring", withExtension: "mp3") else { return }
    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        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)
    }

100%的工作在我的项目和测试

这是在Swift中查找和播放音频文件的基本代码。

将音频文件添加到Xcode中，并添加下面的代码。

import AVFoundation

class ViewController: UIViewController {

   var audioPlayer = AVAudioPlayer() // declare globally

   override func viewDidLoad() {
        super.viewDidLoad()

        guard let sound = Bundle.main.path(forResource: "audiofilename", ofType: "mp3") else {
            print("Error getting the mp3 file from the main bundle.")
            return
        }
        do {
            audioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: sound))
        } catch {
            print("Audio file error.")
        }
        audioPlayer.play()
    }

    @IBAction func notePressed(_ sender: UIButton) { // Button action
        audioPlayer.stop()
    }
}

斯威夫特3

import AVFoundation


var myAudio: AVAudioPlayer!

    let path = Bundle.main.path(forResource: "example", ofType: "mp3")!
    let url = URL(fileURLWithPath: path)
do {
    let sound = try AVAudioPlayer(contentsOf: url)
    myAudio = sound
    sound.play()
} catch {
    // 
}

//If you want to stop the sound, you should use its stop()method.if you try to stop a sound that doesn't exist your app will crash, so it's best to check that it exists.

if myAudio != nil {
    myAudio.stop()
    myAudio = nil
}

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)
        }

    }

}