首先在工程中添加json類庫
接着編寫配置文件比如我的：StudentCfg.plist
裏面的內容爲：
[
{"id":1000001, "age":33, "address":"廣西桂林紅星縣","phone":"13132719203"},
{"id":1000001, "age":34, "address":"廣西桂林紅星縣","phone":"13132719204"},
{"id":1000001, "age":35, "address":"廣西桂林紅星縣","phone":"13132719205"}
]
然後創建Student類，Student.h內容如下：
#ifndef __Cocos2dxApp__Student__
#define __Cocos2dxApp__Student__
#include <stdio.h>
#include "cocos2d.h"
class Student :publiccocos2d::Node
{
public:
CREATE_FUNC(Student);
CC_SYNTHESIZE(int,m_nID, ID);
CC_SYNTHESIZE(int,m_nAge, Age);
CC_SYNTHESIZE(std::string,m_strAddress, Address);
CC_SYNTHESIZE(std::string,m_strPhone, Phone);
};
#endif /* defined(__Cocos2dxApp__Student__) */
Student.cpp的內容如下：
#include "Student.h"
，呵呵，這實現文件沒沒什麼內容，主要是因爲Student.h中的函數聲明沒有，這個學過c++的基本都懂
接下來，在HelloWorld.h中添加m_vcStudents，用以保存Student對象，添加loadStudentCfg函數，用來加載並解釋json配置文件到
m_vcStudents中
class HelloWorld : public cocos2d::LayerColor
{
public:
// there's no 'id' in cpp, so we recommend returning the class instance pointer
static cocos2d::Scene* createScene();
// Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
virtual bool init();
// a selector callback
void menuCloseCallback(cocos2d::Ref* pSender);
bool loadStudentCfg(conststd::string& path);
// implement the "static create()" method manually
CREATE_FUNC(HelloWorld);
private:
cocos2d::Vector<Student*> m_vcStudents;
};
loadStudentCfg函數的代碼如下：
bool HelloWorld::loadStudentCfg(const std::string& path)
{
auto strData = FileUtils::getInstance()->getStringFromFile(path.c_str());
Json::Reader reader;
Json::Value root;
if (!reader.parse(strData, root)) {
return false;
}
// int size = root.size();
// for (int i = 0; i < size; ++i) {
// auto student = Student::create();
// int id = root[i]["id"].asInt();
// int age = root[i]["age"].asInt();
// std::string address = root[i]["address"].asString();
// std::string phone = root[i]["phone"].asString();
//
// student->setID(id);
// student->setAge(age);
// student->setAddress(address);
// student->setPhone(phone);
// m_vcStudents.pushBack(student);
// }
for (auto r : root) {
auto student = Student::create();
int id = r["id"].asInt();
int age = r["age"].asInt();
std::string address = r["address"].asString();
std::string phone = r["phone"].asString();
student->setID(id);
student->setAge(age);
student->setAddress(address);
student->setPhone(phone);
m_vcStudents.pushBack(student);
}
returntrue;
}
代碼中註釋的部分是常規寫法，現在我用c++11的新特性，for(:)語句
接着在HelloWorld.cpp實現文件的init函數調用
，loadStudentCfg,並將配置文件中的數據打印出來
如下：
bool HelloWorld::init()
{
// 1. super init first
if ( !LayerColor::init())
{
return false;
}
if (!loadStudentCfg("StudentCfg.plist")) {
return false;
}
auto visibleSize =Director::getInstance()->getVisibleSize();
for (auto s : m_vcStudents)
{
int id = s->getID();
int age = s->getAge();
std::string address = s->getAddress();
std::string phone = s->getPhone();
auto msg =String::createWithFormat("id = %d, age= %d, address= %s, phe = %s",id , age, address.c_str(),phone.c_str());
auto lbel =Label::create(msg->getCString(),"Arial",24);
auto size = lbel->getContentSize();
lbel->setPosition(Vec2(visibleSize.width /2 , visibleSize.height - size.height /2 - height));
height += size.height;
this->addChild(lbel);
}
return true;
}
最後打印結果如下：
這只是針對新手，呵呵，我也是新手，僅當學習筆記，希望能幫到大家的忙。
#include "json/document.h"
std::string sData =FileUtils::getInstance()->getStringFromFile("config.plist");
rapidjson::Document reader;
reader.Parse<0>(sData.c_str());
int size = root.size();
for (int i =0; i < size; ++i) {
auto student = Student::create();
int id = reader[i]["id"].asInt();
int age = reader[i]["age"].asInt();
std::string address = root[i]["address"].asString();
std::string phone = root[i]["phone"].asString();
student->setID(id);
student->setAge(age);
student->setAddress(address);
student->setPhone(phone);
m_vcStudents.pushBack(student);
}
}
推薦文章：
http://cn.cocos2d-x.org/tutorial/show?id=1528