QNetworkReply wait for finished

Question

I am using Qt 4.6.3 and the following not-working code

QStringList userInfo;
QNetworkRequest netRequest(QUrl(\"http://api.stackoverflow.com/1.1/users/587532\         


        

Answer 1

First I recommend you to read the relevant documentation from the Qt Documentation Reference that you can find here: http://doc.qt.nokia.com/latest/classes.html.

Looking at your code sample it seems that you already have, along side with QNetworkRequest and QNetworkReply, a QNetworkAccessManager. What you need is to connect a slot to the finished(QNetworkReply *) signal. This signal is emitted whenever a pending network reply is finished.

QNetworkAccessManager *manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(finished(QNetworkReply*)),
        this, SLOT(replyFinished(QNetworkReply*)));

manager->get(QNetworkRequest(QUrl("http://api.stackoverflow.com")));

Now, in your slot, you can read the data which was sent in response to your request. Something like:

void MyClass::MySlot(QNetworkReply *data) {
    QFile file("dataFromRequest");
    if (!file.open(QIODevice::WriteOnly))
        return;
    file.write(data->readAll());
    file.close();
}

EDIT:

To wait synchronously for a signal use QEventLoop. You have an example here

http://wiki.forum.nokia.com/index.php/How_to_wait_synchronously_for_a_Signal_in_Qt