Cannot stop background music (Swift 3, Xcode 8) - iphone

Question

I have an instance of AVAudioPlayer run when the view loads. From another ViewController I have a UISwitch to stop the music. I can receive the Bool from the switch and see it calling the correct function in the console but I cannot get the music to stop playing. I have tried to stop, pause, and change volume but to no avail. When the app is shut down (double tap home and swipe up) and the switch state was left off, the music will not play. If you toggle the switch on the music will play but will not stop.
Code:
var player:AVAudioPlayer = AVAudioPlayer()
let optionDefaults = UserDefaults.standard
override func viewDidLoad() {
super.viewDidLoad()
do{
let audioPath = Bundle.main.path(forResource: "backgroundmusic", ofType: "wav")
try player = AVAudioPlayer(contentsOf: NSURL(fileURLWithPath: audioPath!) as URL)
player.volume = 0.2
if optionDefaults.value(forKey: "musicOn") != nil {
let musicOn: Bool = optionDefaults.value(forKey: "musicOn") as! Bool
if musicOn == false {
print("********** Music is off **********")
player.stop()
}
else {
print("********** Music is On **********")
player.play()
}
}
} catch {
print("AVPlayer did not initialize")
}
player.numberOfLoops = -1
}
******* code for switch ********
let optionDefaults = UserDefaults.standard
#IBOutlet weak var musicOnOff: UISwitch!
var musicOn : Bool = true
#IBAction func switchToGame(sender: UIButton) {
if musicOnOff.isOn{
musicOn = true
optionDefaults.set(musicOn, forKey: "musicOn")
}
if musicOnOff.isOn == false{
musicOn = false
optionDefaults.set(musicOn, forKey: "musicOn")
}}
override func viewDidLoad() {
super.viewDidLoad()
if optionDefaults.value(forKey: "musicOn") != nil {
let musicOn: Bool = optionDefaults.value(forKey: "musicOn") as! Bool
if musicOn == false {
musicOnOff.isOn = false
}
else{
musicOnOff.isOn = true
}
}}

Answer 1

You are playing the music only when view loading completes.If You want to stop and play when switch toggles just call palyOrStopMusic method on toggle switch action
var player:AVAudioPlayer = AVAudioPlayer()
let optionDefaults = UserDefaults.standard
override func viewDidLoad() {
super.viewDidLoad()
playOrStopMusic()
}
func playOrStopMusic(){
do{
let audioPath = Bundle.main.path(forResource: "backgroundmusic", ofType: "wav")
try player = AVAudioPlayer(contentsOf: NSURL(fileURLWithPath: audioPath!) as URL)
player.volume = 0.2
if optionDefaults.value(forKey: "musicOn") != nil {
let musicOn: Bool = optionDefaults.value(forKey: "musicOn") as! Bool
if musicOn == false {
print("********** Music is off **********")
player.stop()
}
else {
print("********** Music is On **********")
player.play()
}
}
} catch {
print("AVPlayer did not initialize")
}
player.numberOfLoops = -1
}
******* code for switch ********
let optionDefaults = UserDefaults.standard
#IBOutlet weak var musicOnOff: UISwitch!
var musicOn : Bool = true
#IBAction func switchToGame(sender: UIButton) {
if musicOnOff.isOn{
musicOn = true
optionDefaults.set(musicOn, forKey: "musicOn")
}else{
musicOn = false
optionDefaults.set(musicOn, forKey: "musicOn")
}
playOrStopMusic()
}
override func viewDidLoad() {
super.viewDidLoad()
playOrStopMusic()
}