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 / , winSize.height / ));
    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:

CCScene *pScene = MyScene::create();

director->runWithScene(pScene);