如何使用 Swift 播放声音？-Java 学习之路

我想用 Swift 播放声音。

我的代码在 Swift 1.0 中工作，但现在它在 Swift 2 或更新版本中不再起作用了。

override func viewDidLoad() {
    super.viewDidLoad()

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

    do { 
        player = try AVAudioPlayer(contentsOfURL: url, fileTypeHint: nil) 
    } catch _{
        return
    }

    bgMusic.numberOfLoops = 1
    bgMusic.prepareToPlay()

    if (Data.backgroundMenuPlayed == 0){
        player.play()
        Data.backgroundMenuPlayed = 1
    }
}

13 回答

Swift 4(iOS 12 兼容)

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)
}

回复于 2024-04-26T08:09:03+08:00

200

最好您可能想要使用 AVFoundation.它提供了使用视听媒体的所有必需品.

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

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(iOS 12 兼容)

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)
    }
}

确保更改曲调的名称以及延期。需要正确导入该文件(Project Build Phases> Copy Bundle Resources)。您可能希望将其放在assets.xcassets中以方便使用。

对于简短的声音文件，您可能希望使用 non-compressed 音频格式，例如.wav，因为它们具有最佳质量和较低的 CPU 影响。对于短声音文件，较高的 disk-space 消耗不应该是一个大问题。文件越长，您可能想要使用压缩格式，例如.mp3等。检查CoreAudio的兼容的音频格式。

**Fun-fact：**有一些简洁的小库，使播放声音更容易。 :)
例如：SwiftySound

回复于 2024-04-26T08:09:03+08:00

对于Swift 3：

import AVFoundation

/// **must** define instance variable outside, because .play() will deallocate AVAudioPlayer 
/// immediately and you won't hear a thing
var player: AVAudioPlayer?

func playSound() {
    guard let url = Bundle.main.url(forResource: "soundName", withExtension: "mp3") else {
        print("url not found")
        return
    }

    do {
        /// this codes for making this app ready to takeover the device audio
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        try AVAudioSession.sharedInstance().setActive(true)

        /// change fileTypeHint according to the type of your audio file (you can omit this)

        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileTypeMPEGLayer3)

        // no need for prepareToPlay because prepareToPlay is happen automatically when calling play()
        player!.play()
    } catch let error as NSError {
        print("error: \(error.localizedDescription)")
    }
}

本地资产的最佳做法是将其放在assets.xcassets中，然后像这样加载文件：

func playSound() {
    guard let url = Bundle.main.url(forResource: "soundName", withExtension: "mp3") else {
        print("url not found")
        return
    }

    do {
        /// this codes for making this app ready to takeover the device audio
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        try AVAudioSession.sharedInstance().setActive(true)

        /// change fileTypeHint according to the type of your audio file (you can omit this)

        /// for iOS 11 onward, use :
        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)

        /// else :
        /// player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileTypeMPEGLayer3)

        // no need for prepareToPlay because prepareToPlay is happen automatically when calling play()
        player!.play()
    } catch let error as NSError {
        print("error: \(error.localizedDescription)")
    }
}

回复于 2024-04-26T08:09:03+08:00

iOS 12 - Xcode 10 beta 6 - Swift 4.2

仅使用 1 个 IBAction 并将所有按钮指向该 1 个动作。

import AVFoundation

    var player = AVAudioPlayer()

@IBAction func notePressed(_ sender: UIButton) {

        print(sender.tag) // testing button pressed tag

        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 {

            print ("There is an issue with this code!")

        }

}

回复于 2024-04-26T08:09:03+08:00

8
如果代码没有生成任何错误，但您没有听到声音 - 将播放器创建为实例：
```
static var player: AVAudioPlayer!
```
对我来说，当我做这个改变时，第一个解决方案起作用:)
回复于 2024-04-26T08:09:03+08:00

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
}

回复于 2024-04-26T08:09:03+08:00

首先导入这些库

import AVFoundation

import AudioToolbox

像这样设置委托

AVAudioPlayerDelegate

在按钮动作或某些动作上写下漂亮的代码：

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％在我的项目中工作并经过测试

回复于 2024-04-26T08:09:03+08:00

使用 Swift 4 和 iOS 12 进行测试：

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)
    }
}

回复于 2024-04-26T08:09:03+08:00

非常简单的代码快速

将您的音频文件添加到您的 Xcode 并给出给定的代码

import AVFoundation

class ViewController: UIViewController{

   var audioPlayer = AVAudioPlayer() //declare as Globally

   override func viewDidLoad() {
        super.viewDidLoad()

        guard let sound = Bundle.main.path(forResource: "audiofilename", ofType: "mp3") else {
            print("error to get the mp3 file")
            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()
}

回复于 2024-04-26T08:09:03+08:00

func playSound(_ buttonTag : Int){

    let path = Bundle.main.path(forResource: "note\(buttonTag)", ofType : "wav")!
    let url = URL(fileURLWithPath : path)

    do{
        soundEffect = try AVAudioPlayer(contentsOf: url)
        soundEffect?.play()
        // to stop the spound .stop()
    }catch{
        print ("file could not be loaded or other error!")
    }
}

适用于 swift 4 最新版本。 ButtonTag 将是您界面上按钮的标签。 Notes 位于与 Main.storyboard 平行的文件夹中的文件夹中。每个音符都被命名为 note1，note2 等.ButtonTag 从点击的按钮给出数字 1,2 等，作为参数传递

回复于 2024-04-26T08:09:03+08:00

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)
        }

    }

}

回复于 2024-04-26T08:09:03+08:00

Swift 4，4.2 和 5

播放来自 URL 和项目的音频(本地文件)

import UIKit
import AVFoundation

class ViewController: UIViewController{

var audioPlayer : AVPlayer!

override func viewDidLoad() {
        super.viewDidLoad()
// call what ever function you want.
    }

    private func playAudioFromURL() {
        guard let url = URL(string: "https://geekanddummy.com/wp-content/uploads/2014/01/coin-spin-light.mp3") else {
            print("error to get the mp3 file")
            return
        }
        do {
            audioPlayer = try AVPlayer(url: url as URL)
        } catch {
            print("audio file error")
        }
        audioPlayer?.play()
    }

    private func playAudioFromProject() {
        guard let url = Bundle.main.url(forResource: "azanMakkah2016", withExtension: "mp3") else {
            print("error to get the mp3 file")
            return
        }

        do {
            audioPlayer = try AVPlayer(url: url)
        } catch {
            print("audio file error")
        }
        audioPlayer?.play()
    }

}

回复于 2024-04-26T08:09:03+08:00

-1

import AVFoundation
var player:AVAudioPlayer!

 func Play(){
        guard let path = Bundle.main.path(forResource: "KurdishSong", ofType: "mp3")else{return}
        let soundURl = URL(fileURLWithPath: path)
        player = try? AVAudioPlayer(contentsOf: soundURl)
        player.prepareToPlay()
        player.play()
        //player.pause()
        //player.stop()
    }

回复于 2024-04-26T08:09:03+08:00

如何使用 Swift 播放声音？

13 回答

Swift 4(iOS 12 兼容)

斯威夫特 2.3

斯威夫特 3

Swift 4(iOS 12 兼容)

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