把CCLayer加入到UIViewController中,并从CCLayer发送回事件到UIViewController

首先，以下是UIViewController子类的实现代码，我们加入了HellerWord，它是CCLayer的一个子类。

-(void)loadView{
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(receiveTestNotification:) 
                                                 name:@"TestNotification"
                                               object:nil];
    
    CC_DIRECTOR_INIT();
    
    // Try to use CADisplayLink director
    // if it fails (SDK < 3.1) use the default director
    if( ! [CCDirector setDirectorType:kCCDirectorTypeDisplayLink] )
        [CCDirector setDirectorType:kCCDirectorTypeDefault];
    
    CCDirector *director = [CCDirector sharedDirector];
    
    self.wantsFullScreenLayout = YES;
    
    
    EAGLView *glView = [EAGLView viewWithFrame:[window bounds] 
                                   pixelFormat:kEAGLColorFormatRGB565 
                                   depthFormat:0];    
    
    
    // attach the openglView to the director
    [director setOpenGLView:glView];    
    [self setView:glView];
    
    
#if GAME_AUTOROTATION == kGameAutorotationUIViewController
    [director setDeviceOrientation:kCCDeviceOrientationPortrait];
#else
    [director setDeviceOrientation:kCCDeviceOrientationLandscapeLeft];
#endif
    
    [director setAnimationInterval:1.0/60];
    
    // Run the intro Scene
    CCScene *scene = [HelloWorldLayer scene];   
    [[CCDirector sharedDirector] runWithScene:scene];
}

- (void) receiveTestNotification:(NSNotification *) notification

{

    if ([[notification name] isEqualToString:@"TestNotification"])

        NSLog (@"Successfully received the test notification!");

}

　以上码的第一句是：[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(receiveTestNotification:) 
                                                 name:@"TestNotification"
                                               object:nil];

其作用是用于接收来自CCLayer子类HollerWorld中发回来的事件。相应的响应方法为以上代码中的

- (void) receiveTestNotification:(NSNotification *) notification。

那么在HollerWorld中就要有类似以下的事件发送方法

- (void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *) event{
    NSLog(@"CCLayer touches has began");

    [[NSNotificationCenter defaultCenter] postNotificationName:@"TestNotification" object:self];
}