cocos2d-x-2.0 ListView使用
发表于2016-02-27
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
#include
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 *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;
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::iterator it = m_pDataList->begin();
for (int i=0; inRow; ++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);
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