A Swift class to manage initialization, playback and memory related to sound playback on iOS

MNGSoundManager.swift

//
//  MNGSoundManager.swift
//  
//
//  Created by Tommie N. Carter, Jr., MBA on 10/26/15.
//  Copyright © 2015 MING Technology. All rights reserved.
//

import Foundation
import AudioToolbox

class MNGSoundManager {
    static let sharedInstance = MNGSoundManager()
    
    //urls for sound clips
    let backSoundURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("264447__kickhat__open-button-2", ofType: "wav")!)
    let buttonSoundURL =  NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("80921__justinbw__buttonchime02up", ofType: "wav")!)
    let deleteSoundURL =  NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("67454__splashdust__negativebeep", ofType: "wav")!)
    let dropSoundURL =  NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("191678__porphyr__waterdrop", ofType: "wav")!)
    let mainSwitchOpenSoundURL =  NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("195912__acpascal__start-beep", ofType: "wav")!)
    let mainSwitchCloseSoundURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("191754__fins__button-5", ofType: "wav")!)
    let popupSoundURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("242502__gabrielaraujo__pop-up-notification", ofType: "wav")!)
    let optionSoundURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("126418__cabeeno-rossley__button-select", ofType: "wav")!)
    
    
    private var _backSnd:SystemSoundID? = nil
    lazy var backSound: SystemSoundID = {
        if self._backSnd != nil { return self._backSnd! }
        
        var sndID : SystemSoundID = 0
        let url = self.backSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._backSnd = sndID
        return sndID
    }()
    private var _btnSnd:SystemSoundID? = nil
    lazy var buttonSound: SystemSoundID = {
        if self._btnSnd != nil { return self._btnSnd! }
        
        var sndID : SystemSoundID = 0
        let url = self.buttonSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._btnSnd = sndID
        return sndID
    }()
    private var _deleteSnd:SystemSoundID? = nil
    lazy var deleteSound: SystemSoundID = {
        if self._deleteSnd != nil { return self._deleteSnd! }
        
        var sndID : SystemSoundID = 0
        let url = self.deleteSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._deleteSnd = sndID
        return sndID
    }()
    private var _dropSnd:SystemSoundID? = nil
    lazy var dropSound: SystemSoundID = {
        if self._dropSnd != nil { return self._dropSnd! }
        
        var sndID : SystemSoundID = 0
        let url = self.dropSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._dropSnd = sndID
        return sndID
    }()
    private var _mainSndClose:SystemSoundID? = nil
    lazy var mainSwitchCloseSound: SystemSoundID = {
        if self._mainSndClose != nil { return self._mainSndClose! }
        
        var sndID : SystemSoundID = 0
        let url = self.mainSwitchCloseSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._mainSndClose = sndID
        return sndID
    }()
    private var _mainSndOpen:SystemSoundID? = nil
    lazy var mainSwitchOpenSound: SystemSoundID = {
        if self._mainSndOpen != nil { return self._mainSndOpen! }
        
        var sndID : SystemSoundID = 0
        let url = self.mainSwitchOpenSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._mainSndOpen = sndID
        return sndID
    }()
    private var _popupSnd:SystemSoundID? = nil
    lazy var popupSound: SystemSoundID = {
        if self._popupSnd != nil { return self._popupSnd! }
        
        var sndID : SystemSoundID = 0
        let url = self.popupSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._popupSnd = sndID
        return sndID
    }()
    private var _optionSnd:SystemSoundID? = nil
    lazy var optionSound: SystemSoundID = {
        if self._optionSnd != nil { return self._optionSnd! }
        
        var sndID : SystemSoundID = 0
        let url = self.optionSoundURL
        AudioServicesCreateSystemSoundID (
            url,
            &sndID)
        
        self._optionSnd = sndID
        return sndID
    }()
    
    deinit
    {
        AudioServicesDisposeSystemSoundID(self.buttonSound)
        AudioServicesDisposeSystemSoundID(self.mainSwitchOpenSound)
        AudioServicesDisposeSystemSoundID(self.mainSwitchCloseSound)
        AudioServicesDisposeSystemSoundID(self.deleteSound)
        AudioServicesDisposeSystemSoundID(self.dropSound)
        AudioServicesDisposeSystemSoundID(self.optionSound)
        AudioServicesDisposeSystemSoundID(self.popupSound)
        
        _backSnd = nil
        _deleteSnd = nil
        _dropSnd = nil
        _mainSndClose = nil
        _mainSndOpen = nil
        _optionSnd = nil
        _popupSnd = nil
        
    }
    func playBackSound(){
        AudioServicesPlaySystemSound(self.backSound)
    }
    func playButtonSound(){
        AudioServicesPlaySystemSound(self.buttonSound)
    }
    func playDeleteSound(){
        AudioServicesPlaySystemSound(self.deleteSound)
    }
    func playDropSound(){
        AudioServicesPlaySystemSound(self.dropSound)
    }
    func playMainSwitchOpenSound(){
        AudioServicesPlaySystemSound(self.mainSwitchOpenSound)
    }
    func playMainSwitchCloseSound(){
        AudioServicesPlaySystemSound(self.mainSwitchCloseSound)
    }
    func playPopupSound(){
        AudioServicesPlaySystemSound(self.popupSound)
    }
    func playOptionSound(){
        AudioServicesPlaySystemSound(self.optionSound)
    }
    func vibrateDevice() {
        AudioServicesPlaySystemSound (kSystemSoundID_Vibrate);
    }
}