geocode_data_manager.cpp

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#include <iostream>
#include "geocode_data_manager.h"

#include <qjson/parser.h>
#include <QDebug>

const QString apiKey = "AIzaSyCad4XfoHa-7R5qwSjq6zv4_9FmvHO96RY";

GeocodeDataManager::GeocodeDataManager(QObject *parent) :
    QObject(parent)
{
  m_pNetworkAccessManager = new QNetworkAccessManager(this);
connect(m_pNetworkAccessManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));

}

void GeocodeDataManager::getCoordinates(const QString& address)
{
std::cout << 'url=' << std::endl;
QString url = QString("http://maps.google.com/maps/geo?q=%1&key=%2&output=json&oe=utf8&sensor=false").arg(address).arg(
    apiKey);
qWarning() << "url=" << url;
m_pNetworkAccessManager->get(QNetworkRequest(QUrl(url)));
}

void GeocodeDataManager::replyFinished(QNetworkReply* reply)
{
QString json = reply->readAll();
qDebug() << "Reply = " << json;
qDebug() << "URL = " << reply->url();
QString strUrl = reply->url().toString();

QJson::Parser parser;

bool ok;

// json is a QString containing the data to convert
QVariant result = parser.parse(json.toLatin1(), &ok);
if (!ok)
{
  emit errorOccured(QString("Cannot convert to QJson object: %1").arg(json));
  return;
}

int code = result.toMap()["Status"].toMap()["code"].toInt();
if (code != 200)
{
  emit errorOccured(QString("Code of request is: %1").arg(code));
  return;
}

QVariantList placeMarks = result.toMap()["Placemark"].toList();
if (placeMarks.count() == 0)
{
  emit errorOccured(QString("Cannot find any locations"));
  return;
}

double east = placeMarks[0].toMap()["Point"].toMap()["coordinates"].toList()[0].toDouble();
double north = placeMarks[0].toMap()["Point"].toMap()["coordinates"].toList()[1].toDouble();

emit coordinatesReady(east, north);

}