Swift，如何在按下按钮时播放声音

Question

我是编程新手，开始学习 Swift 来制作一个有趣的钢琴应用程序。

按下按钮时无法播放声音。我搜索了一些网站，但我太初学者无法理解......

http://www.tmroyal.com/playing-sounds-in-swift-avaudioplayer.html http://www.rockhoppertech.com/blog/swift-avfoundation/

您能告诉我如何在按下“PainoC”按钮时播放“C.m4a”声音吗？

这是我的“viewcontroller.swift”。

import UIKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()   
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    @IBAction func PianoC(sender: AnyObject) {
    }
}

Answer 1

希望对你有帮助。

import UIKit
import AVFoundation

class ViewController: UIViewController {
   // make sure to add this sound to your project
   var pianoSound = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("C", ofType: "m4a"))
   var audioPlayer = AVAudioPlayer()

   override func viewDidLoad() {
       super.viewDidLoad()   

       audioPlayer = AVAudioPlayer(contentsOfURL: pianoSound, error: nil)
       audioPlayer.prepareToPlay()
   }

   override func didReceiveMemoryWarning() {
       super.didReceiveMemoryWarning()
   }

   @IBAction func PianoC(sender: AnyObject) {
       audioPlayer.play() 
   }

}

最新 Swift 4.2:

   let pianoSound = URL(fileURLWithPath: Bundle.main.path(forResource: "btn_click_sound", ofType: "mp3")!)
   var audioPlayer = AVAudioPlayer()

   @IBAction func PianoC(sender: AnyObject) {
       do {
            audioPlayer = try AVAudioPlayer(contentsOf: pianoSound)
            audioPlayer.play()
       } catch {
          // couldn't load file :(
       } 
   }