本文原创，如转载请注明原文地址。

http://www.jb51.cc/article/p-rioxugjx-zz.html

最近下了最新版本的cocos2dx 3.2做项目，发现一个坑爹的问题。ScrollView 的子控件上有Menu的时候，ScrollView滑动无法响应。

百度了很多资料，要么说不清楚，要么版本很旧的不适合。

于是自己跑去看了下源码。

发现Menu里面有一句

touchListener->setSwallowTouches(true);

所以花了几分钟自己写了个继承Menu的类，

修改下方法，然后要使用Menu的地方替换为自己的DBMenu就完美解决问题了。

下面是源码头h文件：

#pragma  once
#include "cocos2d.h"
USING_NS_CC;
class DBMenu:public Menu
{
public:
	bool init();

	/** initializes a Menu with a NSArray of MenuItem objects */
	bool initWithArray(const Vector<MenuItem*>& arrayOfItems);
	static DBMenu* createWithArray(const Vector<MenuItem*>& arrayOfItems);
	static DBMenu* createWithItem(MenuItem* item);

	/** creates a Menu with MenuItem objects */
	static DBMenu* createWithItems(MenuItem *firstItem,va_list args);
	static DBMenu* create(MenuItem* item,...) CC_REQUIRES_NULL_TERMINATION;
private:

};
下面是源码cpp文件：
<pre name="code" class="cpp">#include "DBMenu.h"
bool DBMenu::init()
{
	return initWithArray(Vector<MenuItem*>());
}

bool DBMenu::initWithArray( const Vector<MenuItem*>& arrayOfItems )
{
	if (Layer::init())
	{
		_enabled = true;
		// menu in the center of the screen
		Size s = Director::getInstance()->getWinSize();

		this->ignoreAnchorPointForPosition(true);
		setAnchorPoint(Vec2(0.5f,0.5f));
		this->setContentSize(s);

		setPosition(Vec2(s.width/2,s.height/2));

		int z=0;

		for (auto& item : arrayOfItems)
		{
			this->addChild(item,z);
			z++;
		}

		_selectedItem = nullptr;
		_state = Menu::State::WAITING;

		// enable cascade color and opacity on menus
		setCascadeColorEnabled(true);
		setCascadeOpacityEnabled(true);


		auto touchListener = EventListenerTouchOneByOne::create();
		touchListener->setSwallowTouches(false);

		touchListener->onTouchBegan = CC_CALLBACK_2(DBMenu::onTouchBegan,this);
		touchListener->onTouchMoved = CC_CALLBACK_2(DBMenu::onTouchMoved,this);
		touchListener->onTouchEnded = CC_CALLBACK_2(DBMenu::onTouchEnded,this);
		touchListener->onTouchCancelled = CC_CALLBACK_2(DBMenu::onTouchCancelled,this);

		_eventDispatcher->addEventListenerWithSceneGraPHPriority(touchListener,this);

		return true;
	}
	return false;
}

DBMenu* DBMenu::createWithArray( const Vector<MenuItem*>& arrayOfItems )
{
	auto ret = new DBMenu();
	if (ret && ret->initWithArray(arrayOfItems))
	{
		ret->autorelease();
	}
	else
	{
		CC_SAFE_DELETE(ret);
	}

	return ret;
}

DBMenu* DBMenu::createWithItem( MenuItem* item )
{
	return DBMenu::create(item,nullptr);
}

DBMenu* DBMenu::createWithItems( MenuItem *item,va_list args )
{
	Vector<MenuItem*> items;
	if( item )
	{
		items.pushBack(item);
		MenuItem *i = va_arg(args,MenuItem*);
		while(i)
		{
			items.pushBack(i);
			i = va_arg(args,MenuItem*);
		}
	}

	return DBMenu::createWithArray(items);
}

DBMenu* DBMenu::create( MenuItem* item,... ) CC_REQUIRES_NULL_TERMINATION
{
	va_list args;
	va_start(args,item);

	DBMenu *ret = DBMenu::createWithItems(item,args);

	va_end(args);

	return ret;
}

本文原创，如转载请注明原文地址。

http://blog.csdn.net/q229827701/article/details/38901213

COCOS2DX 3.X 解决TABLEVIEW 、SCROLLVIEW上的MENU问题

汉果James发布于 5个月前，共有2条评论

//luohanguo
voidMenu::setTouchlimit(cocos2d::Node*node)
{
m_szTouchLimitNode=node;
m_bTouchLimit=true;
}
boolMenu::isInTouchLimit(Touch*touch)
{
if(m_bTouchLimit)
{
Vec2touchLocation=touch->getLocation();

Vec2local=m_szTouchLimitNode->convertToNodeSpace(touchLocation);
Rectr=m_szTouchLimitNode->getBoundingBox();
r.origin=Vec2::ZERO;

if(!r.containsPoint(local))
{
returntrue;
}
}
returnfalse;
}
//luohanguo

boolMenu::onTouchBegan(Touch*touch,Event*event)
{
if(_state!=Menu::State::WAITING||!_visible||!_enabled)
{
returnfalse;
}

for(Node*c=this->_parent;c!=nullptr;c=c->getParent())
{
if(c->isVisible()==false)
{
returnfalse;
}
}
//luohanguo
if(isInTouchLimit(touch))
{
returnfalse;
}
//luohanguo
_selectedItem=this->getItemForTouch(touch);
if(_selectedItem)
{
_state=Menu::State::TRACKING_TOUCH;
_selectedItem->selected();

returntrue;
}

returnfalse;
}