Swift 3 多个 AVAudioPlayer

Question

对 Swift 很陌生，所以请原谅我的问题太天真了。
我构建了一个非常简单的应用程序，其中包含 3 个按钮，每个按钮播放不同的声音。它工作正常，但代码效率不高，因为我为每个要播放的声音创建了一个播放器，所以我想知道如何只使用播放器的一个实例来播放所有声音。这是我的代码：

import UIKit
import AVFoundation

class ViewController: UIViewController {

    var player1 = AVAudioPlayer()
    var player2 = AVAudioPlayer()
    var player3 = AVAudioPlayer()

    @IBAction func playU3(_ sender: Any) {
        player3.play()
    }

    @IBAction func playU2(_ sender: Any) {
        player2.play()
    }
    @IBAction func playU1(_ sender: Any) {
        player1.play()
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let audioPath3 = Bundle.main.path(forResource: "sound-3", ofType: "mp3")
        let audioPath2 = Bundle.main.path(forResource: "sound-2", ofType: "mp3")
        let audioPath1 = Bundle.main.path(forResource: "sound-1", ofType: "mp3")


        do {

            try player3 = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath3!))
            try player2 = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath2!))
            try player1 = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath1!))


        } catch {
            print(error)
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

提前致谢

Answer 1

请检查一下：

import UIKit
import AVFoundation

class ViewController: UIViewController {

    var player : AVAudioPlayer!

    @IBAction func playU3(_ sender: Any) {
        let audioPath = Bundle.main.path(forResource: "sound-3", ofType: "mp3")
        do {

            try player = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath!))
            player.play()
        } catch {
            print(error)
        }
    }

    @IBAction func playU2(_ sender: Any) {
        let audioPath = Bundle.main.path(forResource: "sound-2", ofType: "mp3")
        do {

            try player = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath!))
            player.play()
        } catch {
            print(error)
        }
    }
    @IBAction func playU1(_ sender: Any) {
        let audioPath = Bundle.main.path(forResource: "sound-1", ofType: "mp3")
        do {

            try player = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath!))
            player.play()
        } catch {
            print(error)
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

Answer 2

试试这个！

import UIKit
import AVFoundation
class ViewControllerDup: UIViewController {  
var audioPlayerArray         = [AVAudioPlayer]()

@IBAction func playU3(_ sender: Any) {
   playSound("sound-3.mp3")
}

@IBAction func playU2(_ sender: Any) {
    playSound("sound-2.mp3")
}
@IBAction func playU1(_ sender: Any) {
    playSound("sound-1.mp3")
}

override func viewDidLoad() {
    super.viewDidLoad()

}

func playSound(_ soundName: String)
{

    var audioPlayer        = AVAudioPlayer()
    let alertSound = URL(fileURLWithPath: Bundle.main.path(forResource: soundName, ofType: nil)!)

    do{
        audioPlayer = try AVAudioPlayer(contentsOf: alertSound )
        audioPlayerArray.append(audioPlayer)

        audioPlayer.prepareToPlay()
        audioPlayer.play()
    }
    catch{
        print("error")
    }  
}    
 override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
 }
}