如何使用Swift播放声音？

Z时代
2024-01-10
分类：问答

我想用Swift播放声音。

我的代码在Swift 1.0中可用，但现在在Swift 2或更高版本中不再起作用。

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
  }
}

回答：

某些评论中建议与，和兼容。

回答：

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)
    }
}

回答：

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)
    }
}

回答：

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)
    }
}