设置android返回键，保存和取得最高分

1.在.h中声明一些方法

virtual void keyBackClicked();           //Android返回键

bool isHaveSaveFile();

void getHighestHistoryScore();

在.cpp中实现这个几个方法

void WelcomeLayer::keyBackClicked()
{
CCDirector::sharedDirector()->end();
}


bool WelcomeLayer::isHaveSaveFile()
{
if(!CCUserDefault::sharedUserDefault()->getBoolForKey("isHaveSaveFileXml"))
{
CCUserDefault::sharedUserDefault()->setBoolForKey("isHaveSaveFileXml", true);
CCUserDefault::sharedUserDefault()->setIntegerForKey("HighestScore",0);
CCUserDefault::sharedUserDefault()->flush();
return false;
}
else
{
return true;
}
}


void WelcomeLayer::getHighestHistorySorce()
{
if (isHaveSaveFile())
{
GameOverLayer::highestHistoryScore=CCUserDefault::sharedUserDefault()->getIntegerForKey("HighestScore",0);
}
}

2.写一个单例，单例区分工厂例。

public:
static PlaneLayer*sharePlane;

      static PlaneLayer*create();

PlaneLayer*PlaneLayer::sharePlane=NULL;

PlaneLayer*PlaneLayer::create(){
PlaneLayer*pRet=new PlaneLayer();
if(pRet&&pRet->init()){
pRet->autorelease();
sharePlane=pRet;
return pRet;
}
else{
CC_SAFE_DELETE(pRet);
pRet=NULL;
return pRet;
}
}

3.一组搭配的屏幕触摸操作

bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);


void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);


void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);


void registerWithTouchDispatcher();                  //单点触控