MyLayer MyScene

//MyLayer.h
#include "cocos2d.h"
USING_NS_CC;

class MyLayer : public CCLayer
{
public:
static MyLayer* create();
bool init();
};

//MyLayer.cpp
#include "MyLayer.h"

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

bool MyLayer::init()
{
if (!CCLayer::init())
{
return false;
}

CCSize winSize = CCDirector::sharedDirector()->getWinSize();
CCSprite* spr = CCSprite::create("1.png");
spr->setPosition(ccp(winSize.width / 2, winSize.height / 2));
addChild(spr);

return true;
}

//MyScene.h
#include "cocos2d.h"
USING_NS_CC;

class MyScene : public CCScene
{
public:
static MyScene* create();
bool init();
};

//myScene.cpp

#include "MyScene.h"
#include "MyLayer.h"

MyScene* MyScene::create()
{
MyScene *pRet = new MyScene();
if (pRet && pRet->init())
{
pRet->autorelease();
}
else
{
delete pRet;
pRet = NULL;
}

return pRet;
}

bool MyScene::init()
{
MyLayer* layer = MyLayer::create();
this->addChild(layer);

return true;
}
appDelegate: