Question

It works fine when I add only one MenuItem. but when I go for other two MenuItems it crashes with exception ‘NSInvalidArgumentException’, reason: ‘+[NSInvocation invocationWithMethodSignature:]: method signature argument cannot be nil’

Here what i am doing

    CCMenuItem *startGame = [CCMenuItemImage itemFromNormalImage:@"start-game.png" selectedImage:@"start-game.png" target:self selector:@selector(startGame:)];


    CCMenuItem *settings = [CCMenuItemImage itemFromNormalImage:@"settings.png" selectedImage:@"settings.png" target:self selector:@selector(settings:)];


    CCMenuItemImage *gameCentre = [CCMenuItemImage itemFromNormalImage:@"game-centre.png" selectedImage:@"game-centre.png" target:self selector:@selector(gameCentre:)];


    CCMenu *menu = [CCMenu menuWithItems:startGame, settings, gameCentre, nil];
    [menu alignItemsVerticallyWithPadding:10];
    [self addChild:menu z:1];

here are my selector functions

-(void)startGame:(id)sender
 {
     NSLog(@"start game");
 }
-(void)setttings:(id)sender
 {
     NSLog(@"settings");
 }
-(void)gameCentre:(id)sender
 {
     NSLog(@"game centre");
 }

Thanx in advance for any help

Answer 1

since your selectors do end with “:”, ie @selector(gameCentre:), make sure the methods in your class actually take argument

- (void)startGame:(id)sender
{
    // do whatever you want here
}

- (void)settings:(id)sender
{
    // do whatever you want here
}

- (void)gameCentre:(id)sender
{
    // do whatever you want here
}