How to make a function play different sounds in Swift

Question

I have 10 different buttons and each button has a unique tag associated with it. All buttons are linked to the same IBAction. I have the function to play different different sounds according to the tag associated with the particular button that is clicked.

import AVFoundation

var myAudio: AVAudioPlayer!

let path = Bundle.main.path(forResource: "sound1", ofType: "wav")!
let url = URL(fileURLWithPath: path)
do {
    let sound = try AVAudioPlayer(contentsOf: url)
    myAudio = sound
    sound.play()
    } catch {
        //
    }
}

Currently all buttons play the same sound. I want the button to play different sound depending on which button is clicked. — Utkarsh Sharma, Jun 08 '18 at 07:21
My sound playing code is written above. It is included within the IBAction for all ten buttons. I want to change the "sound1" according to the tag of the sender button. — Utkarsh Sharma, Jun 08 '18 at 07:23

Anbu.Karthik · Accepted Answer · 2018-06-08T07:33:18.727

do like

@objc func yourbtnActionName(_ sender : UIButton){

    switch sender.tag {
    case 1:
        commonSoundCode(name: "sound1")
        break
    case 2:
        commonSoundCode(name: "yoursecondSoundname")
        break
    default:
        break
    }
   }

then common method as

 func commonSoundCode(name: String){
    let path = Bundle.main.path(forResource: name, ofType: "wav")!
    let url = URL(fileURLWithPath: path)
    do {
        let sound = try AVAudioPlayer(contentsOf: url)
        myAudio = sound
        sound.play()
    } catch {
        //
    }
}

option 2

if your sound files are in the same sequence, for e.g (sound1.wav, sound2.wav......, sound10.wav) then call like

@objc func yourbtnActionName(_ sender : UIButton){
  let path = Bundle.main.path(forResource: "sound\(sender.tag)", ofType: "wav")!
    let url = URL(fileURLWithPath: path)
    do {
        let sound = try AVAudioPlayer(contentsOf: url)
        myAudio = sound
        sound.play()
    } catch {
        //
    }

}

You should avoid using the tag of `0` since that is the default for all views. — rmaddy, Jun 08 '18 at 07:26
player.prepareToPlay() How will this line of code affect my code if I add it above the player.play() — Utkarsh Sharma, Jun 08 '18 at 07:40
@UtkarshSharma - see this for help, https://stackoverflow.com/questions/25503629/avaudioplayer-produces-lag-despite-preparetoplay-in-swift — Anbu.Karthik, Jun 08 '18 at 07:42

score 1 · Answer 2 · edited Nov 29 '21 at 09:39

import UIKit

//Mark: Do import AVFoundation is must here!

import AVFoundation

class ViewController: UIViewController {
    
//Mark: Create variable for AVAudioEngine! and AVAudioplayermode!
    
    var engine: AVAudioEngine!
    var audioPlayerNode : AVAudioPlayerNode!

//Mark: Create Variable for each tone as AVAudiofile!

    var Cs:AVAudioFile!
    var Ds:AVAudioFile!
    var Es:AVAudioFile!
    var Fs:AVAudioFile!
    var Gs:AVAudioFile!
    var As:AVAudioFile!
    var Bs:AVAudioFile!
    
    override func viewDidLoad() {
        super.viewDidLoad()

// Mark: Load engine
        
        engine = AVAudioEngine()
        
// Mark : Mention each sound
        
        Cs = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "C", ofType: "wav")!))
        Ds = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "D", ofType: "wav")!))
        Es = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "E", ofType: "wav")!))
        Fs = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "F", ofType: "wav")!))
        Gs = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "G", ofType: "wav")!))
        As = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "A", ofType: "wav")!))
        Bs = try? AVAudioFile(forReading: NSURL.fileURL(withPath:
                   Bundle.main.path(forResource: "B", ofType: "wav")!))
    }
    
//Mark: create function(playSound) for connect AVAudioEngine and AVAudioplayermode for playing audio when button clicked
    
    func playSound(audioFile: AVAudioFile)  {
        audioPlayerNode = AVAudioPlayerNode()
        if(audioPlayerNode.isPlaying){
            audioPlayerNode.stop()
        }

        if(engine.isRunning){
            engine.stop()
            engine.reset()
        }

        engine.attach(audioPlayerNode)

    engine.connect(audioPlayerNode, to: engine.mainMixerNode, format: audioFile.processingFormat)
    audioPlayerNode.scheduleFile(audioFile, at: nil, completionHandler: nil)

    // Start the audio engine
    engine.prepare()
    try! engine.start()

    audioPlayerNode.play()
}

//Mark: create required button for actions to connect function(playSound) and mention each sound  to button

    @IBAction func btnC(_ sender: UIButton) {
        playSound(audioFile: Cs)
    }
    @IBAction func btnD(_ sender: UIButton) {
        playSound(audioFile: Ds)
    }
 
    @IBAction func btnE(_ sender: UIButton) {
        playSound(audioFile: Es)
    }
    
    @IBAction func btnF(_ sender: UIButton) {
        playSound(audioFile: Fs)
    }
    @IBAction func btnG(_ sender: UIButton) {
        playSound(audioFile: Gs)
    }
    
    @IBAction func btnA(_ sender: UIButton) {
        playSound(audioFile: As)
    }
    
    @IBAction func btnB(_ sender: UIButton) {
        playSound(audioFile: Bs)
    }
    
}

score 0 · Answer 3 · answered Jun 08 '18 at 07:24

You need to simply play sounds according to the UIButton's tag.

@IBAction func playsound(_ sender: UIButton)
{
    switch sender.tag
    {
    case 0:
        //Sound for Button with tag=0
    case 1:
        //Sound for Button with tag=1
    default:
        //Default Sound
    }
}

In the above code, add more cases according to your UIButton tags.

Please add some more code for a bit more clarity around your question.

How to make a function play different sounds in Swift

3 Answers3