cocos2d 播放音乐

// 在init这个函数当中做一些初始化的事情
bool HelloWorld::init()
{
//////////////////////////////
// 先构造父级对象
if ( !CCLayer::init() )
{
return false;
}

CCSize size=CCDirector::sharedDirector()->getWinSize();
CCMenuItemFont* item=CCMenuItemFont::create("click me",this,menu_selector(HelloWorld::menuCallback));
item->setPosition(ccp(size.width/2,size.height/2));
CCMenu* menu=CCMenu::create(item,NULL);
menu->setPosition(CCPointZero);
addChild(menu);

SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic("background.mp3");
//SimpleAudioEngine::sharedEngine()->preloadEffect();

return true;
}

void HelloWorld::menuCallback(CCObject* pSender)
{
SimpleAudioEngine::sharedEngine()->playBackgroundMusic("background.mp3");
}