Audio Test

InterfaceController.swift

import WatchKit
import Foundation
import WatchConnectivity

//
// The WatchKit Interface Controller
//
class InterfaceController: WKInterfaceController, WCSessionDelegate {
    
    var session: WCSession!
    
    @IBAction func sendMessage() {
        let messageToSend = ["Value": "Play Sound"]
        
        session.sendMessage(messageToSend, replyHandler: {replyMessage in
            print("Sending the message")
        }, errorHandler: {error in
            print(error)
        })
    }

    override func awakeWithContext(context: AnyObject?) {
        super.awakeWithContext(context)
        
        // Configure interface objects here.
    }

    override func willActivate() {
        // This method is called when watch view controller is about to be visible to user
        super.willActivate()
        
        if WCSession.isSupported() {
            session = WCSession.defaultSession()
            session.delegate = self
            session.activateSession()
        }
    }

    override func didDeactivate() {
        // This method is called when watch view controller is no longer visible
        super.didDeactivate()
    }

}

TestSound.swift

import Foundation
import AVFoundation

//
// A class for playing the sound
//
class TestSound {
    let theSoundFile = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sound", ofType: "wav")!)
    
    var audioPlayer: AVAudioPlayer!
    
    func playSound() {
        print("Playing test sound")
        
        do {
            self.audioPlayer = try AVAudioPlayer(contentsOfURL: theSoundFile)
            self.audioPlayer.play()
        } catch {
            print("Unable to find sound file")
        }
    }
}

ViewController.swift

import UIKit
import WatchConnectivity

// 
// The iOS View Controller
// 
class ViewController: UIViewController, WCSessionDelegate {
    @IBOutlet weak var messageLabel: UILabel!
    
    var session: WCSession!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        if WCSession.isSupported() {
            session = WCSession.defaultSession()
            session.delegate = self
            session.activateSession()
        }
    }
    
    func session(session: WCSession, didReceiveMessage message: [String : AnyObject], replyHandler: ([String : AnyObject]) -> Void) {
        let value = message["Value"] as? String
        let testSound = TestSound()
        
        testSound.playSound()
        
        dispatch_async(dispatch_get_main_queue(), {
            self.messageLabel.text = value
        })
    }

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


}