bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }

    Size visibleSize = Director::getInstance()->getVisibleSize();
    Vec2 origin = Director::getInstance()->getVisibleOrigin();

    auto mySprite = Sprite::create("First.png");
    mySprite->setPosition(Point((visibleSize.width / 2) + origin.x, (visibleSize.height / 2) + origin.y));
    this->addChild(mySprite);

    auto listener = EventListenerTouchOneByOne::create();
    listener->setSwallowTouches(true);

    listener->onTouchBegan = CC_CALLBACK_2(HelloWorld::onTouchBegan, this);

    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    return true;
}
bool HelloWorld::onTouchBegan(cocos2d::Touch* touch, cocos2d::Event* event)
{
    CCLOG("onTouchBegan x = %f, y = %f", touch->getLocation().x, touch->getLocation().y);
    return true;
}