如何下载FaceBook用户照片

How to download a FaceBook user photo

本文关键字：FaceBook 用户 照片 下载 何下载      更新时间：2023-10-16

我曾经使用CCHttpRequest（cocos2dx）从互联网上请求照片，它适用于像"https://www.baidu.com/img/bdlogo.png"这样的URL。

但是，我无法通过CCHttpRequest下载FB朋友照片。照片网址为"https://graph.facebook.com/1386570461651640/picture..."此外，我尝试了NSRequest（OC）。它适用于此 URL 并下载了照片。

因此，任何人都知道如何通过CCHttpRequest或任何其他在*.cpp文件中工作的方法下载朋友照片。

此代码 

    string _id = "" // id require to whome you want to fectch photo
        HttpRequest* request = new (std::nothrow) HttpRequest();
            string url = "https://graph.facebook.com/"+_id+"/picture?height=120
                    &width=120";
            request->setUrl(url.c_str());
            request->setRequestType(cocos2d::network::HttpRequest::Type::GET);
            request->setResponseCallback(CC_CALLBACK_2(HellowWorld::onRequestImgCompleted, this));
            request->setTag("GetImage");
            HttpClient::getInstance()->send(request);
            request->release();

void HellowWorld::onRequestImgCompleted(HttpClient *sender, HttpResponse *response)
{
    log("AppDelegate::onHttpRequestCompleted - onHttpRequestCompleted BEGIN");
    if (!response)
    {
        log("onHttpRequestCompleted - No Response");
        return;
    }
    log("onHttpRequestCompleted - Response code: %lu", response->getResponseCode());
    if (!response->isSucceed())
    {
        log("onHttpRequestCompleted - Response failed");
        log("onHttpRequestCompleted - Error buffer: %s", response->getErrorBuffer());
        return;
    }
    log("onHttpRequestCompleted - Response code: %s", response->getResponseDataString());
    std::vector<char> *buffer = response->getResponseData();
    Image * image = new  Image ();
    image-> initWithImageData ( reinterpret_cast<const unsigned char*>(&(buffer->front())), buffer->size());
    Texture2D * texture = new  Texture2D ();
    texture-> initWithImage (image);
    Sprite* sp = Sprite::createWithTexture(texture);
    add(sp);
    sp->setPosition(Vec2(100, 100));
}
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