Hi
fast sample.
it need error handling to be useful in real code ! ( dont skip that if for a real program)
#include <QApplication>
#include <QDebug>
#include <QJsonDocument>
#include <QJsonObject>
#include <QNetworkReply>
#include <QNetworkAccessManager>
int main(int argc, char* argv[]) {
QApplication a(argc, argv);
MainWindow w;
w.show();
// if in mainwindow. make sure m_manager lives in .h as member. else it wont work. ( death by scope)
QNetworkAccessManager m_manager;
// make request
QNetworkRequest request = QNetworkRequest(QUrl("https://api.bitmart.com/ticker/BMX_ETH"));
QNetworkReply* reply = m_manager.get(request);
// connect to signal when its done using lambda)
QObject::connect(reply, &QNetworkReply::finished, [reply]() {
// read data
QString ReplyText = reply->readAll();
// qDebug() << ReplyText;
// ask doc to parse it
QJsonDocument doc = QJsonDocument::fromJson(ReplyText.toUtf8());
// we know first element in file is object, to try to ask for such
QJsonObject obj = doc.object();
// ask object for value
QJsonValue value = obj.value(QString("bid_1"));
qDebug() << "Bid value is" << value.toString();;
reply->deleteLater(); // make sure to clean up
});
return a.exec();
}
and it outputs
Bid value is "0.000290"
