How to make TMXTiledMap responsive?

This is my method for supporting multiple resolutions:

My AppMacro.h

#ifndef __APPMACROS_H__
#define __APPMACROS_H__

#include "cocos2d.h"


#define DESIGN_RESOLUTION_480X320    0
#define DESIGN_RESOLUTION_480X320    1
#define DESIGN_RESOLUTION_1024X768   2
#define DESIGN_RESOLUTION_1280X800   3
#define DESIGN_RESOLUTION_2048X1536  4

/* If you want to switch design resolution, change next line */
#define TARGET_DESIGN_RESOLUTION_SIZE  DESIGN_RESOLUTION_1280X800

typedef struct tagResource
{
    cocos2d::CCSize size;
    char directory[100];
}Resource;

static Resource smallResource  =  { cocos2d::CCSizeMake(480, 320),   "iphone" };
static Resource mysmallResource  =  { cocos2d::CCSizeMake(800, 480),   "iphone" };
static Resource mediumResource =  { cocos2d::CCSizeMake(1024, 768),  "ipad"   };
static Resource myResource =  { cocos2d::CCSizeMake(1280, 800),  "ipad" };
static Resource largeResource  =  { cocos2d::CCSizeMake(2048, 1536), "ipadhd" };

#if (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_480X320)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(480, 320);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_480X320)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(800, 480);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_1024X768)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(1024, 768);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_2048X1536)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(2048, 1536);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_1280X800)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(1280, 800);
#else
#error unknown target design resolution!
#endif

// The font size 24 is designed for small resolution, so we should change it to fit for current design resolution
#define TITLE_FONT_SIZE  (cocos2d::CCEGLView::sharedOpenGLView()->getDesignResolutionSize().width / myResource.size.width * 24)

#endif /* __APPMACROS_H__ */

And my AppDelegate.cpp:

#include "AppDelegate.h"

#include "AppMacros.h"
#include "SimpleAudioEngine.h"
#include "cocos2d.h"

#include "GameLayer.h"
USING_NS_CC;


AppDelegate::AppDelegate() {

}

AppDelegate::~AppDelegate() {

}

bool AppDelegate::applicationDidFinishLaunching() {
    CCLOG("%s","applicationDidFinishLaunching ");
    // initialize director
    CCDirector* pDirector = CCDirector::sharedDirector();
    CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();

    pDirector->setOpenGLView(pEGLView);

    // Set the design resolution
    pEGLView->setDesignResolutionSize(designResolutionSize.width,
            designResolutionSize.height, kResolutionFixedWidth);

    //CCSize frameSize = pEGLView->getFrameSize();
    CCSize frameSize = pDirector->getVisibleSize();

    // if the frame's height is larger than the height of medium resource size, select large resource.
    if (frameSize.width > myResource.size.width) {

        pDirector->setContentScaleFactor(
                largeResource.size.width / designResolutionSize.width);
        

    }
    // if the frame's height is larger than the height of small resource size, select medium resource.
    else if (frameSize.width > mediumResource.size.width) {

        pDirector->setContentScaleFactor(
                myResource.size.width / designResolutionSize.width);
        

    } else if (frameSize.width > mysmallResource.size.width) {

        pDirector->setContentScaleFactor(
                designResolutionSize.width / mediumResource.size.width);
        

    } else if (frameSize.width > smallResource.size.width) {

        pDirector->setContentScaleFactor(
                designResolutionSize.width / mediumResource.size.width);
        

    }
    // if the frame's height is smaller than the height of medium resource size, select small resource.
    else {

        pDirector->setContentScaleFactor(
                designResolutionSize.width / smallResource.size.width);
        

    }

    // turn on display FPS
    pDirector->setDisplayStats(false);

    // set FPS. the default value is 1.0/60 if you don't call this
    pDirector->setAnimationInterval(1.0 / 60);

    // create a scene. it's an autorelease object
    CCScene *pScene = GameLayer::scene();

    // run
    pDirector->runWithScene(pScene);
    
    return true;
}

// This function will be called when the app is inactive. When comes a phone call,it's be invoked too
void AppDelegate::applicationDidEnterBackground() {
    CCDirector::sharedDirector()->stopAnimation();

    // if you use SimpleAudioEngine, it must be pause
    CocosDenshion::SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();



}

// this function will be called when the app is active again
void AppDelegate::applicationWillEnterForeground() {
    CCDirector::sharedDirector()->startAnimation();

    // if you use SimpleAudioEngine, it must resume here
    CocosDenshion::SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();


}