屏蔽方法:

進入新的CCLayer時:

[[CCDirector sharedDirector].touchDispatcher addTargetedDelegate:self priority:kCCMenuHandlerPriority swallowsTouches:YES];

離開此CCLayer時調用

[[CCDirector sharedDirector].touchDispatcher removeDelegate:self];

重寫方法

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event;

解釋:

由于CCMenu 按鈕接受按鍵的優先級為-128(值越小優先級越高)，所有不論處在那一層都會接收到點擊 

[[CCDirector sharedDirector].touchDispatcher addTargetedDelegate:self priority:kCCMenuHandlerPriority swallowsTouches:YES];

priority: 優先級 kCCMenuHandlerPriority(-128)

swallowsToucher: 是否吃掉按鈕不叫其他層再接收了  如果為NO其他層還是一樣會接收到Touch數據

注意離開此CCLayer時一定要調用

[[CCDirector sharedDirector].touchDispatcher removeDelegate:self];

否則下面層將不再接收按鍵