Swift, how to play sound when press a button

Question

I'm very beginner of programming and start studying Swift to make a piano app for fun.

I have a trouble to play a sound when press a button. I've searched some website but I'm too beginner to understand...

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

Could you please tell me how can I play my "C.m4a" sound when press a "PainoC" button?

Here is my "view controller.swift".

import UIKit

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

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

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

score 36 · Accepted Answer · edited Dec 07 '18 at 09:48

36

I hope it will help you.

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() 
   }

}

Latest 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 :(
       } 
   }

edited Dec 07 '18 at 09:48

Sunil Targe

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answered Sep 09 '14 at 06:17

gabriel

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thanks for your answer, i really appreciate. sorry i'm not used to add comment,,, it doesn't work and i replied to you by answering... – Bick Sep 09 '14 at 10:56
after studying Xcode and Swift for a while and now I understand your answer. It worked! thank you very much! – Bick Oct 01 '14 at 08:58
4

Why are you initializing audioPlayer to AVAudioPlayer()? – Josiah Hudson Sep 16 '15 at 19:11
@jpheldson Yeah, I noticed that too. – Robo Robok Aug 07 '17 at 14:36

MiladiuM · Answer 2 · 2016-10-17T07:53:01.977

Swift 3

the syntax is now as follows: first add import AVFoundation on top of the code to have access to AVFoundation Framework.

import UIKit
import AVFoundation

class ViewController: UIViewController {
    //this is your audio playback instance
    var audioPlayer = AVAudioPlayer()


    override func viewDidLoad() {
        super.viewDidLoad()
        // address of the music file.
        let music = Bundle.main.path(forResource: "Music", ofType: "mp3")
        // copy this syntax, it tells the compiler what to do when action is received
        do {
            audioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: music! ))
            try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient)
            try AVAudioSession.sharedInstance().setActive(true)
        }
        catch{
            print(error)
        }

    }
//this runs the do try statement
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

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

score 6 · Answer 3 · answered Jul 21 '21 at 01:10

SWIFT 5

import AVFoundation


class Test {
    
    var player: AVAudioPlayer!
    
    func playAudio() {
        
        let url = Bundle.main.url(forResource: "Sound", withExtension: "mp3")
        player = try! AVAudioPlayer(contentsOf: url!)
        player.play()
        
        
    }
    
}

score 4 · Answer 4 · answered Sep 24 '17 at 08:49

4

In Swift 4:

import AVFoundation
class ViewController: UIViewController, ARSCNViewDelegate, ARSessionDelegate {
    let popSound = Bundle.main.url(forResource: "Pop", withExtension: "mp3")
    var audioPlayer = AVAudioPlayer()

  override func viewDidLoad() {
       do {
            audioPlayer = try AVAudioPlayer(contentsOf: popSound!)
            audioPlayer.play()
        } catch {
            print("couldn't load sound file")
        }
}

answered Sep 24 '17 at 08:49

nanospeck

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This crashes as it returns nil for popSound. This can be easily fixed using the following code: `let popSound = Bundle.main.path(forResource: "pop.mp3", ofType:nil)!` `audioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: popSound))` – Priyanka Aug 31 '18 at 06:58
Please avoid force unwrapping values as it is a dangerous action and may cause unexpected app crashes. Always remember to write as safe as possible code. – D. B. Feb 19 '20 at 16:22

score 3 · Answer 5 · edited Sep 11 '16 at 11:39

3

import UIKit
import AVFoundation

class ViewController: UIViewController {
    var audioPlayer = AVAudioPlayer()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

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

    @IBAction func button1Action(sender: AnyObject) {
        let CatSound = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("Meow-sounds", ofType: "mp3")!)
        do {
            audioPlayer = try AVAudioPlayer(contentsOfURL: CatSound)
            audioPlayer.prepareToPlay()
        } catch {
            print("Problem in getting File")
        }
        audioPlayer.play()
    }
}

edited Sep 11 '16 at 11:39

slfan

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answered Sep 11 '16 at 11:18

Sachin Dobariya

744
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Please don't post [similar answers](http://stackoverflow.com/a/39435255/2227743). Anyway, if a question already has an answer available, *flag the question as duplicate* instead of answering. Thanks. – Eric Aya Sep 11 '16 at 11:22
@Eric Aya Look at my code.. It is different from above answer.. I use try and catch method for error handling which is necessary in x-code Version 7.1 (7B91b) for new swift – Sachin Dobariya Sep 13 '16 at 10:45
I wasn't talking about the answers *here*. The problem is that you've posted an answer *similar to the one you've already posted* on the other page. That's why I told you to avoid posting duplicates and to flag the question instead. – Eric Aya Sep 13 '16 at 10:48

score 2 · Answer 6 · 2019-11-14T12:55:48.270

In Swift 4

This worked for me try it out.

import UIKit
import AVFoundation

class ViewController: UIViewController, AVAudioPlayerDelegate{

    var audioPlayer = AVAudioPlayer()

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



    @IBAction func notePressed(_ sender: UIButton) {

        let soundURL = NSURL(fileURLWithPath: Bundle.main.path(forResource: "note1", ofType: "wav")!)

        do{
            audioPlayer = try AVAudioPlayer(contentsOf: soundURL as URL)

        }catch {
            print("there was some error. The error was \(error)")
        }
        audioPlayer.play()

    }



}

score 0 · Answer 7 · answered Aug 29 '17 at 14:29

In Swift 3:

import UIKit
import AVFoundation

class QuestionView: UIViewController {

    var btnButton = UIButton()
    var player = AVAudioPlayer()

    override func viewDidLoad() {
        super.viewDidLoad()

        btnButton.frame = CGRect(x: 100, y: 100, width: 100, height: 100)
        btnButton.backgroundColor = UIColor.blue
        btnButton.addTarget(self, action: #selector(ButtonSound), for: .touchUpInside)

    }

    func ButtonSound() {

       do {

           //  make sure to add this sound to your project

           let audioPath = Bundle.main.path(forResource: "Click", ofType: "mp3")

           try player = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath!) as URL)


       } catch {

           print("Error !")

       }

       player.play()

    }

}

score -1 · Answer 8 · edited May 21 '20 at 19:52

-1

If you just want a click effect, the code below will work.
The bird file must be in xcode.

self.run(SKAction.playSoundFileNamed("Bird.mp3", waitForCompletion:false))

edited May 21 '20 at 19:52

colinD

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answered May 21 '20 at 11:52

serkan san

1

Swift, how to play sound when press a button

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