How to toggle a sound on/off - ios

Question

i created a sound in DetailViewController,
soundFileURL = [[NSBundle mainBundle] URLForResource:#"click" withExtension:#"wav"];
s1Player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil];
s1Player.delegate = self;
s1Player.volume = 2;
[s1Player play];
i want to control the above sound in my ViewController. i created a button in ViewController, and toggle it (sound on / off).
i tried,
DetailViewController.m
ViewController *viewController = [[ViewController alloc] init];
if(viewController.stopSound) {
[s1Player stop];
s1Player.volume = 0;
}
else {
[s1Player play];
s1Player.volume = 2;
}
ViewController.h
#property BOOL stopSound;
in ViewController.m
- (void) setSoundAction {
if(_stopSound){
_stopSound = NO;
}
else{
_stopSound = YES;
}
}
If the above code is not understandable or not cleared please suggest me how to toggle a button i.e, sound on and sound off on DetailViewController. Because Sound placed on DetailViewController.

Answer 1

What you want is just toggle button, then how about this?
-(void)viewDidLoad
{
[super viewDidLoad];
UIButton *toggleButton = [UIButton buttonWithType:UIButtonTypeCustom];
toggleButton.frame = CGRectMake(10.0, 10.0, 40.0, 40.0);
[toggleButton setTitle:#"Toggle" forState:UIControlStateNormal];
[toggleButton addTarget:self action:#selector(toggleSound:) forControlEvents:UIControlEventTouchUpInside]; //execute the method when touched
[self.view addSubview:toggleButton];
}
- (void)toggleSound:(UIButton *)btn
{
static BOOL muted; //remember the current status of AVAudioPlayer object.
muted = !muted; //toggle!!
if(muted) {
s1player.volume = 0.0;
} else {
s2player.volume = 1.0; //max value for volume is 1.0
}
}