创建要播放的音乐文件队列

Posted 2023-03-10

【中文标题】创建要播放的音乐文件队列

【英文标题】：Create Queue Of Music Files To Play

【发布时间】：2015-10-16 04:58:35

【问题描述】：

我有 10 个音乐文件的 URL。我想创建音乐队列，让所有歌曲一首播放，我也可以更改特定文件的索引。

我正在使用 swift 2.0

例如： iPhone 的默认播放列表正在播放。

【问题讨论】：

AVAudioPlayer - playing multiple audio files, in sequence的可能重复

谢谢@Badal，但我需要 swift 2.0 版本。

【参考方案1】：

您可以使用AVAudioPlayerDelegate，如下示例代码所示：

import UIKit
import AVFoundation

class ViewController: UIViewController, AVAudioPlayerDelegate 

    var counter = 0
    var song = ["1","2","3"] //Song names array
    var player = AVAudioPlayer()

    @IBOutlet weak var musicSlider: UISlider!

    override func viewDidLoad() 
        super.viewDidLoad()
        musicSlider.value = 0.0
    

    func updateMusicSlider()

        musicSlider.value = Float(player.currentTime)
    

    @IBAction func playSong(sender: AnyObject) 

        music()
    
    @IBAction func sliderAction(sender: AnyObject) 

        player.stop()
        player.currentTime = NSTimeInterval(musicSlider.value)
        player.play()
    

    func music()

        let audioPath = NSBundle.mainBundle().pathForResource("\(song[counter])", ofType: "mp3")!
        var error : NSError? = nil
        do 
            player = try AVAudioPlayer(contentsOfURL: NSURL(string: audioPath)!)
         catch let error1 as NSError 
            error = error1
        
        musicSlider.maximumValue = Float(player.duration)
        NSTimer.scheduledTimerWithTimeInterval(0.05, target: self, selector: Selector("updateMusicSlider"), userInfo: nil, repeats: true)
        player.delegate = self
        if error == nil 
            player.delegate = self
            player.prepareToPlay()
            player.play()
        
    
    // Delegate method for AVAudioPlayerDelegate which is called every time when song finished. 
    func audioPlayerDidFinishPlaying(player: AVAudioPlayer, successfully flag: Bool)

        if flag 
            counter++
        

        if ((counter + 1) == song.count) 
            counter = 0
        

        music()
    

Sample 了解更多信息。

希望它会有所帮助。