Using blocks without leaks

gistfile1.m

@implementation HelloWorldLayer

// on "init" you need to initialize your instance
-(id) init
{
	// always call "super" init
	// Apple recommends to re-assign "self" with the "super's" return value
	if( (self=[super init]) ) {
		
		// create and initialize a Label
		float currSysVer = [[[UIDevice currentDevice] systemVersion]floatValue];
        
        NSString *textLabel = @"Run in iOS 5.x Simulator!!!";
        if (currSysVer > 4.0)
            textLabel = @"BUG - Tap Play for Info";

		CCLabelTTF *label = [CCLabelTTF labelWithString:textLabel fontName:@"Marker Felt" fontSize:24];

		// ask director for the window size
		CGSize size = [[CCDirector sharedDirector] winSize];
	
		// position the label on the center of the screen
		label.position =  ccp( size.width /2 , size.height/2 + 50 );
		
		// add the label as a child to this Layer
		[self addChild: label];
		
		//
		// Leaderboards and Achievements
		//
		
		// Default font size will be 28 points.
		[CCMenuItemFont setFontSize:28];
		
		// Achievement Menu Item using blocks
		__block id obj = self;
		CCMenuItem *itemAchievement = [CCMenuItemFont itemWithString:@"Game Center" block:^(id sender) {
			
			
			GKAchievementViewController *achievementViewController = [[GKAchievementViewController alloc] init];
			achievementViewController.achievementDelegate = obj;
			
			AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];
			
			[[app navController] presentModalViewController:achievementViewController animated:YES];
			
			[achievementViewController release];
		}
									   ];

//		itemAchievement.releaseBlockAtCleanup = YES;
		
        /*
		// Leaderboard Menu Item using blocks
		CCMenuItem *itemLeaderboard = [CCMenuItemFont itemWithString:@"Leaderboard" block:^(id sender) {
			
			
			GKLeaderboardViewController *leaderboardViewController = [[GKLeaderboardViewController alloc] init];
			leaderboardViewController.leaderboardDelegate = self;
			
			AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];
			
			[[app navController] presentModalViewController:leaderboardViewController animated:YES];
			
			[leaderboardViewController release];
		}
									   ];
         */
		
		CCMenu *menu = [CCMenu menuWithItems:itemAchievement, nil];
		
		[menu alignItemsHorizontallyWithPadding:20];
		[menu setPosition:ccp( size.width/2, size.height/2 - 20)];
		
		// Add the menu to the layer
		[self addChild:menu];

        // Menu Item using blocks
//		__block id obj = self;
		CCMenuItem *gameItem = [CCMenuItemFont itemWithString:@"Play" block:^(id sender) {
			
            [obj playNotice];
            //[[CCDirector sharedDirector] replaceScene:[CCTransitionFade transitionWithDuration:1.0 scene:[GameLayer scene] ]];
		}
                                ];
		
//		gameItem.releaseBlockAtCleanup = YES;
		
		CCMenu *menu2 = [CCMenu menuWithItems:gameItem, nil];
		
		[menu2 alignItemsHorizontallyWithPadding:20];
		[menu2 setPosition:ccp( size.width/2, size.height/2 - 60)];
		[self addChild:menu2];
        
        AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];
        int newCount = [app launchCounter];

        CCLabelTTF *counter = [CCLabelTTF labelWithString:[NSString stringWithFormat:@"Runs: %i",newCount] fontName:@"Marker Felt" fontSize:24];
		counter.position =  ccp( size.width -60 , 20 );
		[self addChild: counter];

        
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(gotNotification:)
                                                     name:@"GetReady"
                                                   object:nil];

	}
	return self;
}

@end