Muting sound problem cocos2d

Im having a slight problem with a settings scene in cocos2d, ive set it up so i can pause and resume some sound by touching a button.

-(id)init{
if((self=[super init])){

    //menu background
    CCSprite *bg = [CCSprite spriteWithFile:@"settingsbackground.jpg"];
    bg.anchorPoint = ccp(0, 0);
    bg.position = ccp(0, 0);
    [self addChild:bg z:0];

    CCMenuItem *Back = [CCMenuItemImage itemFromNormalImage:@"backbutton.gif" selectedImage: @"backbutton.gif" target:self selector:@selector(backToMainMenu:)];
    CCMenuItem *On = [CCMenuItemImage itemFromNormalImage:@"soundon1.gif" selectedImage: @"soundon1.gif" target:self selector:@selector(musicOn:)];
    CCMenuItem *Off = [CCMenuItemImage itemFromNormalImage:@"soundoff1.png" selectedImage: @"soundoff1.png" target:self selector:@selector(musicOff:)];

    CCMenu *BackButton = [CCMenu menuWithItems: Back, nil];
    BackButton.position = ccp(25, 295);

    CCMenu *ToggleButtonOn = [CCMenu menuWithItems: On, nil];
    ToggleButtonOn.position = ccp(25, 195);

    CCMenu *ToggleButtonOff = [CCMenu menuWithItems: Off, nil];
    ToggleButtonOff.position = ccp(25, 95);

    [self addChild:BackButton z:1000];
    [self addChild:ToggleButtonOn];
    [self addChild:ToggleButtonOff];


}
return self;

}

• (void)musicOff:(id)sender { [[SimpleAudioEngine sharedEngine] pauseBackgroundMu开发者_开发百科sic];

}

• (void)musicOn:(id)sender { [[SimpleAudioEngine sharedEngine] resumeBackgroundMusic]; }

The problem is when i go back onto the menu the sound starts again even though its muted on the settings scene.

Whats the best way to get around this?

Cheers

Create an appdelegate variable which stores the current volume status.And dont forget to include setBackgroundMusicVolume code in init of each scene.

something like :

[[SimpleAudioEngine sharedEngine] setBackgroundMusicVolume:appDelegate.volume ];

where appdelegate.volume is my appdelegate volume variable.When you are muting set the variable to 0,when unmuting to 1.

It works