如何在 Xcode11 中的 Swift 中随机播放数组中的音频文件？

Posted 2023-02-24

【中文标题】如何在 Xcode11 中的 Swift 中随机播放数组中的音频文件？

【英文标题】：How do I play audio files from an array at random in Swift in Xcode11?

【发布时间】：2019-10-02 20:51:28

【问题描述】：

我的应用中有一个按钮，我想随机播放一系列声音文件。我已经按照类似帖子的说明进行操作，但是当我点击播放按钮时，它会在启动模拟器时播放随机声音文件，但会重复播放。它不会在每次按下按钮时随机播放它们。下面是我的 ViewController 的完整代码。感谢您的帮助！

import UIKit
import AVFoundation
import AudioToolbox


class ViewController: UIViewController, AVAudioPlayerDelegate 

    var audioPlayerHyeeeehLong: AVAudioPlayer = AVAudioPlayer()
    var audioPlayerHyeeeehShort: AVAudioPlayer = AVAudioPlayer()
    var beWellAudioPlayer: AVAudioPlayer = AVAudioPlayer()

    @IBOutlet weak var beWellButton: UIButton!
    @IBOutlet weak var restoreMindBodyButton: UIButton!
    @IBOutlet weak var spiritualCleanseButton: UIButton!

    var randomIndex = 0
    var soundFiles = ["sound1", "sound2", "sound3", "sound4", "sound5"]

    override func viewDidLoad() 
        super.viewDidLoad()

        // play full spiritual cleanse
        let hyeeeeh = Bundle.main.path(forResource: "hyeeeeh", ofType: "m4a")
        do
            audioPlayerHyeeeehLong = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: hyeeeeh!))
        catch
            print(error)
        

        // play restore mind body
        let hyeeeehShort = Bundle.main.path(forResource: "hyeeeeh1", ofType: "m4a")
        do
            audioPlayerHyeeeehShort = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: hyeeeehShort!))
        catch
            print(error)
        

        // play be well
        randomIndex = Int(arc4random_uniform(UInt32(soundFiles.count)))
        let selectedFileName = soundFiles[randomIndex]
        let beWell = Bundle.main.path(forResource: selectedFileName, ofType: "m4a")
            do
                beWellAudioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: beWell!))
            catch
                print(error)
            

       


    @IBAction func beWell(_ sender: Any) 
        print("Be Well Button Pressed")
        beWellAudioPlayer.play()


    

    @IBAction func playShortHyeeh(_ sender: Any) 
        audioPlayerHyeeeehShort.play()
    

    @IBAction func playFullHyeeeh(_ sender: Any) 
        audioPlayerHyeeeehLong.play()
    

编辑： 下面是固定代码。一切正常！感谢您的帮助，R.B Niranjan！

import UIKit
import AVFoundation
import AudioToolbox


class ViewController: UIViewController, AVAudioPlayerDelegate 

    var audioPlayerHyeeeehLong: AVAudioPlayer = AVAudioPlayer()
    var audioPlayerHyeeeehShort: AVAudioPlayer = AVAudioPlayer()
    var beWellAudioPlayer: AVAudioPlayer = AVAudioPlayer()

    @IBOutlet weak var beWellButton: UIButton!
    @IBOutlet weak var restoreMindBodyButton: UIButton!
    @IBOutlet weak var spiritualCleanseButton: UIButton!

    var randomIndex = 0
    var soundFiles = ["sound1", "sound2", "sound3", "sound4", "sound5"]


    override func viewDidLoad() 
        super.viewDidLoad()

       


    @IBAction func beWell(_ sender: Any) 
        randomIndex = Int(arc4random_uniform(UInt32(soundFiles.count)))
        let selectedFileName = soundFiles[randomIndex]
        let beWell = Bundle.main.path(forResource: selectedFileName, ofType: "m4a")
            do
                beWellAudioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: beWell!))
            catch
                print(error)
            
        if beWellAudioPlayer.isPlaying
            beWellAudioPlayer.pause()
        
        beWellAudioPlayer.currentTime = 0
        beWellAudioPlayer.play()

    

    @IBAction func playShortHyeeh(_ sender: Any) 
        let hyeeeehShort = Bundle.main.path(forResource: "hyeeeeh1", ofType: "m4a")
        do
            audioPlayerHyeeeehShort = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: hyeeeehShort!))
        catch
            print(error)
        
        if audioPlayerHyeeeehShort.isPlaying
            audioPlayerHyeeeehShort.pause()
        
        audioPlayerHyeeeehShort.currentTime = 0
        audioPlayerHyeeeehShort.play()
    

    @IBAction func playFullHyeeeh(_ sender: Any) 

        let hyeeeeh = Bundle.main.path(forResource: "hyeeeeh", ofType: "m4a")
               do
                   audioPlayerHyeeeehLong = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: hyeeeeh!))
               catch
                   print(error)
               
        if audioPlayerHyeeeehLong.isPlaying
            audioPlayerHyeeeehLong.pause()
        
        audioPlayerHyeeeehLong.currentTime = 0
        audioPlayerHyeeeehLong.play()
    

【参考方案1】：

选择一个随机的音频文件并播放应该通过单击按钮来完成。

@IBAction func beWell(_ sender: Any) 
        print("Be Well Button Pressed")
        randomIndex = Int(arc4random_uniform(UInt32(soundFiles.count)))
        let selectedFileName = soundFiles[randomIndex]
        let beWell = Bundle.main.path(forResource: selectedFileName, ofType: "m4a")
            do
                beWellAudioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: beWell!))
            catch
                print(error)
            
        beWellAudioPlayer.play()

【讨论】：

这成功了！非常感谢！这是我第一次使用 Swift 编码并制作 ios 应用程序，所以我对布局还是很陌生。再次感谢！