界面的滑动01(cocos3.8)

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"
#include "ui/UIScrollView.h"

class HelloWorld : public cocos2d::Layer
{
public:
static cocos2d::Scene* createScene();

virtual bool init();

// a selector callback
void menuCloseCallback(cocos2d::Ref* pSender);

protected:

//	cocos2d::ui::Text* _displayValueLabel;

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

// implement the "static create()" method manually
CREATE_FUNC(HelloWorld);
};

#endif // __HELLOWORLD_SCENE_H__

#include "HelloWorldScene.h"
#include "ui/CocosGUI.h"
#include "cocostudio/CocoStudio.h"
USING_NS_CC;

using namespace cocos2d::ui;

const char* font_UIListViewTest = "fonts/Marker Felt.ttf";

Scene* HelloWorld::createScene()
{
// 'scene' is an autorelease object
auto scene = Scene::create();

// 'layer' is an autorelease object
auto layer = HelloWorld::create();

// add layer as a child to scene
scene->addChild(layer);

// return the scene
return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !Layer::init() )
{
return false;
}

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

/////////////////////////////
// 2. add a menu item with "X" image, which is clicked to quit the program
//    you may modify it.

// add a "close" icon to exit the progress. it's an autorelease object
auto closeItem = MenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));

closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
origin.y + closeItem->getContentSize().height/2));

// create menu, it's an autorelease object
auto menu = Menu::create(closeItem, NULL);
menu->setPosition(Vec2::ZERO);
this->addChild(menu, 1);

///////////
// create list view ex data

for (int i = 0; i < 20; ++i)
{
std::string ccstr = StringUtils::format("listview_item_%d", i);
_array.push_back(ccstr);
}

Button* default_button = Button::create("cocosui/backtotoppressed.png", "cocosui/backtotopnormal.png");
default_button->setName("Title Button");
ListView* listView = ListView::create();
listView->setBounceEnabled(true);//弹性滑动
//listView->setClippingEnabled(true);
//listView->setClippingType(ui::Layout::ClippingType::SCISSOR);
listView->setBackGroundImage("cocosui/green_edit.png");
listView->setScrollBarPositionFromCorner(Vec2(7, 7));
listView->setBackGroundImageScale9Enabled(true);
listView->setContentSize(Size(480, 260));//(240, 130)
listView->setAnchorPoint(Vec2(0.50f, 0.50f));
listView->setPosition(Vec2((visibleSize.width) / 2.0f,//+// - backgroundSize.width
//(listView->getContentSize().width) / 2.0f,//backgroundSize.width -
(visibleSize.height) / 2.0f));// +// - backgroundSize.height
//(listView->getContentSize().height) / 2.0f));//backgroundSize.height -
Layout* default_item = Layout::create();
default_item->setTouchEnabled(true);
default_item->setContentSize(default_button->getContentSize());
default_button->setPosition(Vec2(default_item->getContentSize().width / 2.0f,
default_item->getContentSize().height / 2.0f));
default_item->addChild(default_button);
this->addChild(listView);
// Create the list view ex
/*ListView* listView = ListView::create();
// set list view ex direction
//listView->setDirection(ui::ScrollView::Direction::VERTICAL);
//listView->setBounceEnabled(true);//弹性滑动
listView->setBackGroundImage("cocosui/green_edit.png");
listView->setBackGroundImageScale9Enabled(true);
listView->setContentSize(Size(240, 130));
listView->setPosition(Vec2((visibleSize.width) / 2.0f +// - backgroundSize.width
(listView->getContentSize().width) / 2.0f,//backgroundSize.width -
(visibleSize.height) / 2.0f +// - backgroundSize.height
(listView->getContentSize().height) / 2.0f));//backgroundSize.height -
//listView->addEventListener((ui::ListView::ccListViewCallback)CC_CALLBACK_2(HelloWorld::selectedItemEvent, this));
//listView->addEventListener((ui::ListView::ccScrollViewCallback)CC_CALLBACK_2(HelloWorld::selectedItemEventScrollView, this));
//listView->setScrollBarPositionFromCorner(Vec2(7, 7));
this->addChild(listView);

// create model
Button* default_button = Button::create("cocosui/backtotoppressed.png", "cocosui/backtotopnormal.png");
default_button->setName("Title Button");

Layout* default_item = Layout::create();
//default_item->setTouchEnabled(true);
default_item->setContentSize(default_button->getContentSize());
default_button->setPosition(Vec2(default_item->getContentSize().width / 2.0f,
default_item->getContentSize().height / 2.0f));
default_item->addChild(default_button);

// set model
listView->setItemModel(default_item);
*/
// add default item
ssize_t count = _array.size();
for (int i = 0; i < count / 4; ++i)
{
//listView->pushBackDefaultItem();
}
// insert default item
for (int i = 0; i < count / 4; ++i)
{
//listView->insertDefaultItem(0);
}

listView->removeAllChildren();

Sprite* testSprite = Sprite::create("cocosui/backtotoppressed.png");
testSprite->setPosition(Vec2(200, 200));
listView->addChild(testSprite);

// add custom item
/*	for (int i = 0; i < count / 4; ++i)
{
Button* custom_button = Button::create("cocosui/button.png", "cocosui/buttonHighlighted.png");
custom_button->setName("Title Button");
custom_button->setScale9Enabled(true);
custom_button->setContentSize(default_button->getContentSize());

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);

listView->addChild(custom_item);
}*/
// insert custom item
Vector<Widget*>& items = listView->getItems();
ssize_t items_count = items.size();
for (int i = 0; i < count / 4; ++i)
{
Button* custom_button = Button::create("cocosui/button.png", "cocosui/buttonHighlighted.png");
custom_button->setName("Title Button");
custom_button->setScale9Enabled(true);
custom_button->setContentSize(default_button->getContentSize());

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);
}

// set item data
items_count = items.size();
for (int i = 0; i < items_count; ++i)
{
Widget* item = listView->getItem(i);
Button* button = static_cast<Button*>(item->getChildByName("Title Button"));
ssize_t index = listView->getIndex(item);
button->setTitleText(_array[index]);
}

// remove last item
//listView->removeChildByTag(1);

// remove item by index
//items_count = items.size();
//listView->removeItem(items_count - 1);

// set all items layout gravity
//listView->setGravity(ListView::Gravity::CENTER_VERTICAL);

// set items margin
listView->setItemsMargin(2.0f);

return true;
}

void HelloWorld::menuCloseCallback(Ref* pSender)
{
Director::getInstance()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
exit(0);
#endif
}