Cocos2d-x ListView 的添加，删除，点击和滑动到头和尾监听

void selectedItemEvent(Ref* pSender, cocos2d::ui::ListView::EventType type);//头文件中声明两个函数

void selectedItemEventScrollView(Ref* pSender, cocos2d::ui::ScrollView::EventType type);

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ize winSize = CCDirector::getInstance()->getVisibleSize();

Layout* root = Layout::create();

root->setContentSize(Size(500,400));

root->setBackGroundColorType(LAYOUT_COLOR_SOLID);

root->setAnchorPoint(Point(0.5f,0.5f));

root->setPosition(Point(winSize.width/2,winSize.height/2));

this->addChild(root);

std::vector<std::string> _array;

for (int i = 0; i < 20; i++)

{

std::string ccstr = StringUtils::format("ListView_Item_%d",i);

_array.push_back(ccstr);

}

ListView* listView = ListView::create();

listView->setDirection(ui::ScrollView::Direction::HORIZONTAL);//设置水平还是 垂直

listView->setBackGroundImage("green_edit.png");

listView->setBackGroundImageScale9Enabled(true);

listView->setAnchorPoint(Point(0.5f,0.5f));

listView->setContentSize(Size(490,390));

listView->setPosition(Vec2(winSize.width / 2, winSize.height / 2));

listView->addEventListener((ui::ListView::ccListViewCallback)CC_CALLBACK_2(HelloWorld::selectedItemEvent, this));、//添加监听函数

listView->addEventListener((ui::ListView::ccScrollViewCallback)CC_CALLBACK_2(HelloWorld::selectedItemEventScrollView, this));

this->addChild(listView);

//root->addChild(listView);

Sprite* testSprite = Sprite::create("backtotoppressed.png");

testSprite->setPosition(Vec2(200,200));

listView->addChild(testSprite);

// add custom item

ssize_t count = _array.size();

for (int i = 0; i < count / 4; ++i)

{

Button* custom_button = Button::create("button.png", "buttonHighlighted.png");

custom_button->setName("Title Button");

custom_button->setScale9Enabled(true);

custom_button->setContentSize(Size(300,50));

Layout *custom_item = Layout::create();//要通过Layout添加到ListView中

custom_item->setContentSize(custom_button->getContentSize());

custom_button->setPosition(Vec2(custom_item->getContentSize().width / 2.0f, custom_item->getContentSize().height / 2.0f));

custom_item->addChild(custom_button);

listView->addChild(custom_item);

}

//Vector<Widget*>& items = listView->getItems();

//int item_count = items.size();

//CCLOG("liubin---------->%d",item_count);

// insert custom item //插入item

Vector<Widget*>& items = listView->getItems();

ssize_t items_count = items.size();

CCLOG("liubin------111---->%d", items_count);

for (int i = 0; i < count / 4; ++i)

{

Button* custom_button = Button::create("button.png", "buttonHighlighted.png");

custom_button->setName("Title Button");

custom_button->setScale9Enabled(true);

//custom_button->setTitleText(_array[i]);

custom_button->setContentSize(Size(300, 50));

Layout *custom_item = Layout::create();

custom_item->setContentSize(custom_button->getContentSize());

custom_button->setPosition(Vec2(custom_item->getContentSize().width / 2.0f, custom_item->getContentSize().height / 2.0f));

custom_item->addChild(custom_button);

custom_item->setTag(1);

listView->insertCustomItem(custom_item, items_count);

}

//Vector<Widget*>& itemss = listView->getItems();

//int iiii = itemss.size();

//CCLOG("liubin------222---->%d",iiii);

int itemSize = listView->getItems().size();

for (size_t i = 0; i < itemSize; i++)

{

Widget* item = listView->getItem(i);//获取其中的某个项，然后转换成Button 进行设置操作

Button* button = static_cast<Button*>(item->getChildByName("Title Button"));

ssize_t index = listView->getIndex(item);

button->setTitleText(_array[i]);

}

listView->removeChildByTag(1);//删除最后一个

listView->removeItem(2);//删除指定项

listView->setGravity(ListView::Gravity::CENTER_VERTICAL);

listView->setItemsMargin(15.0f);//设置listView间距

void HelloWorld::selectedItemEvent(Ref* pSender, cocos2d::ui::ListView::EventType type)

{

switch (type)

{

case cocos2d::ui::ListView::EventType::ON_SELECTED_ITEM_START:

{

ListView* listView = static_cast<ListView*>(pSender);

CC_UNUSED_PARAM(listView);

CCLOG("select child start index = %ld", listView->getCurSelectedIndex());

break;

}

case cocos2d::ui::ListView::EventType::ON_SELECTED_ITEM_END:

{

ListView* listView = static_cast<ListView*>(pSender);

CC_UNUSED_PARAM(listView);

CCLOG("select child end index = %ld", listView->getCurSelectedIndex());

break;

}

default:

break;

}

}

void HelloWorld::selectedItemEventScrollView(Ref* pSender, ui::ScrollView::EventType type)

{

switch (type) {

case ui::ScrollView::EventType::SCROLL_TO_BOTTOM://滑动到底部

CCLOG("SCROLL_TO_BOTTOM");

break;

case ui::ScrollView::EventType::SCROLL_TO_TOP://滑动到头部

CCLOG("SCROLL_TO_TOP");

break;

default:

break;

}

}