cocos2d-x-2.0 ListView使用

最新推荐文章于 2024-04-17 04:54:44 发布

转载最新推荐文章于 2024-04-17 04:54:44 发布 · 1.1k 阅读

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本文详细介绍了如何在Cocos2d-x中使用ListView组件，包括创建、配置和处理事件的方法。通过实例展示了如何展示数据列表，并在列表项上实现点击事件。文章附带了完整的代码实现，适合开发者学习和参考。

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转载自Cocos2D开发网--Cocos2Dev.com

原文地址: http://www.cocos2dev.com/?p=256

我在上一篇文章中介绍了CCControlSlider、CCControlSwitch、CCControlColourPicker的用法，现在把listView也讲解一下。由于cocos2d-x没有给出例子，所以代码有点长。我都写了注释，应该很容易理解。

ListViewTestLayer.h头文件

//

//  ListViewTestLayer.h

//  2dxDemo

//

//  Created by Yanghui Liu on 12-6-26.

//  Copyright (c) 2012年 BoyoJoy. All rights reserved.

//

 

#ifndef _dxDemo_ListViewTestLayer_h

#define _dxDemo_ListViewTestLayer_h

 

#include "cocos2d.h"

#include "CCListView.h"

#include <list.h>

#include <string.h>

 

USING_NS_CC;

using namespace cocos2d::extension;

 

class ListViewTestLayer : public CCLayer , public CCListViewDelegate {

public:

ListViewTestLayer();

~ListViewTestLayer();

virtual bool init();

LAYER_NODE_FUNC(ListViewTestLayer);

virtual void visit();

public:

// 继承自CCListViewDelegate所需要实现的方法

virtual void CCListView_numberOfCells(CCListView *listView, CCListViewProtrolData *data);

virtual void CCListView_cellForRow(CCListView *listView, CCListViewProtrolData *data);

virtual void CCListView_didClickCellAtRow(CCListView *listView, CCListViewProtrolData *data);

virtual void CCListView_didScrollToRow(CCListView *listView, CCListViewProtrolData *data);

 

private:

//显示list的状态的一个lable

CCLabelTTF *m_InfoLabel;

private:

// 存放的List数据

std::list<std::string> *m_pDataList;

CCListView *m_pListView;

//是否刷新，即reload

bool m_bFresh;

void initData();

};

#endif

cpp的实现：

//

//  ListViewTestLayer.cpp

//  2dxDemo

//

//  Created by Yanghui Liu on 12-6-26.

//  Copyright (c) 2012年 BoyoJoy. All rights reserved.

//

 

#include "ListViewTestLayer.h"

#include "CCListViewCell.h"

 

ListViewTestLayer::ListViewTestLayer(){

}

 

ListViewTestLayer::~ListViewTestLayer(){

}

 

void ListViewTestLayer::initData(){

m_bFresh = true;

CCSize winSize = CCDirector::sharedDirector()->getWinSize();

m_pDataList = new std::list<std::string>;

for (int i=0; i<15; i++) {

char info[20];

sprintf(info, "My Cell %d", i);

m_pDataList->push_back(info);

}

// 初始化控件ListView

CCListView *listView = CCListView::viewWithMode(CCListViewModeVertical);

listView->setContentSize( CCSizeMake(winSize.width * .5, winSize.height));

listView->setDelegate(this);

listView->setPosition(CCPointZero);

this->addChild(listView);

m_pListView = listView;

// 初始化控件Label，显示ListView信息

m_InfoLabel = CCLabelTTF::labelWithString("Info", "", 32);

m_InfoLabel->setPosition(ccp(winSize.width * .8, winSize.height *.1));

this->addChild(m_InfoLabel);

}

 

//visit方法会在每一帧的时候调用，也可以自己注册schedule

void ListViewTestLayer::visit(){

CCLayer::visit();

if (m_bFresh) {

m_pListView->reload();

m_bFresh = false;

}

}

 

//返回行数

void ListViewTestLayer::CCListView_numberOfCells(cocos2d::extension::CCListView *listView, cocos2d::extension::CCListViewProtrolData *data){

data->nNumberOfRows = m_pDataList->size();

}

 

//构造每一个cell

void ListViewTestLayer::CCListView_cellForRow(cocos2d::extension::CCListView *listView, cocos2d::extension::CCListViewProtrolData *data){

CCSize listSize = m_pListView->getContentSize();

CCSize cellSize = CCSizeMake(listSize.width, listSize.height / 5);

CCListViewCell *cell = CCListViewCell::node();

cell->setOpacity(0);

cell->setContentSize(cellSize);

//cell选中颜色

cell->setSelectionColor(ccc4(0, 255, 0, 255));

data->cell = cell;

std::list<std::string>::iterator it = m_pDataList->begin();

for (int i=0; i<data->nRow; ++i) {

++it;

}

CCLabelTTF *cellLabel = CCLabelTTF::labelWithString(((std::string) *it).c_str(), "Arial", 32);

cellLabel->setPosition(ccp(cellSize.width / 2, cellSize.height / 2));

cell->addChild(cellLabel);

}

 

//cell被选中

void ListViewTestLayer::CCListView_didClickCellAtRow(cocos2d::extension::CCListView *listView, cocos2d::extension::CCListViewProtrolData *data){

char info[100];

sprintf(info, "No. %d Row", data->nRow);

m_InfoLabel->setString(info);

}

 

//listView在滑动中

void ListViewTestLayer::CCListView_didScrollToRow(cocos2d::extension::CCListView *listView, cocos2d::extension::CCListViewProtrolData *data){

m_InfoLabel->setString("Scrolling...");

}

 

bool ListViewTestLayer::init(){

if (!CCLayer::init()) {

return false;

}

initData();

return true;

}

调用方法：

//list view

ListViewTestLayer *listViewDemoLayer = ListViewTestLayer::node();

addChild(listViewDemoLayer);