Cocos2dx网络读取图片

//
//  Connection.h
//  XXDemo
//
//  Created by LeeHonGee on 14-9-4.
//
//

#ifndef __XXDemo__Connection__
#define __XXDemo__Connection__

#include <iostream>

#include "cocos2d.h"
#include "network/HttpClient.h"



USING_NS_CC;
using namespace std;
using namespace cocos2d::network;

class Connection{
    
public:
    
    void doHttpRequest(const char* url,const char* requestData,const char* tag,const ccHttpRequestCallback& callback);
    
   void onHttpRequestImageCompleted(HttpClient *sender, HttpResponse *response);
    
private:
    
    //获取请求网络图片资源
    Texture2D* texture;

};

#endif /* defined(__XXDemo__Connection__) */

//
//  Connection.cpp
//  XXXDemo
//
//  Created by LeeHonGee on 14-9-4.
//
//

#include "Connection.h"


/**
 编译到Android平台之后注意添加联网权限
 **/
void Connection::doHttpRequest(const char* url,const char* requestData,const char* tag,const ccHttpRequestCallback& callback){
  
    HttpRequest* request = new HttpRequest();
    request->setUrl(url);
    request->setRequestType(HttpRequest::Type::POST);
    
    //这是回调对象和回调函数
    request->setResponseCallback(callback);
    request->setTag(tag);
    
    //请求的数据
    if(strlen(requestData)!=0){
        request->setRequestData(requestData,strlen(requestData));
    }
    HttpClient::getInstance()->send(request);
    
    //释放内存
    request->release();

   }

void Connection::onHttpRequestImageCompleted(HttpClient *sender, HttpResponse *response){
   
    if (!response)
    {
        return;
    }
    
    // You can get original request type from: response->request->reqType
    const char* tag  =  response->getHttpRequest()->getTag();
    
    if (0 != strlen(tag))
    {
        log("%s completed", response->getHttpRequest()->getTag());
    }
    
    if (!response->isSucceed())
    {
        log("error buffer: %s", response->getErrorBuffer());
        return;
    }
    
    
    std::vector<char> *buffer = response->getResponseData();
    
    //create image
    Image* image = new Image;
    image->initWithImageData((unsigned char*)buffer->data(),buffer->size());
    
    //create texture
    texture = new Texture2D();
    bool isImage = texture->initWithImage(image);
    
    if(isImage){
        log("Texture2D 初始化!");
    }
    image->release();
    
}