void GameWeekRewardLayer::initData() { CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize(); CCLayerColor *backGround = CCLayerColor::create(ccc4(0, 0, 0, 150)); backGround->setContentSize(visibleSize); backGround->setZOrder(0); this -> addChild(backGround); // add your codes here... }