Qt unable to access object data from my function - c++

Question

My code compiles error free but the output to a little lcd panel I have should read 22. It reads the number 44 which is the initial value set in the constuctor. It is failing to update to a new value.
It appears MainWindow::finishedSlot(QNetworkReply* reply) is not being accessed and ui->lcdNumber->display(22) does not update the object as expected.
I can confirm that the connection does establish, I have wireshark running and I can see the software try and reach google, but nothing about that LCD I can get working because I cannot access the constructor object.
The purpose of the LCD is to reflect connection information, but right now I am just trying to reach the constructor.
//mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QNetworkAccessManager>
#include <QUrl>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QImageReader>
#include <QLCDNumber>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
nam = new QNetworkAccessManager();
ui->lcdNumber->display(44);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::connect()
{
qDebug() << "connect";
QObject::connect(nam, SIGNAL(finished(QNetworkReply*)),
this, SLOT(finishedSlot(QNetworkReply*)));
QObject::connect(nam, SIGNAL(finished(QNetworkReply*)),
this, SLOT(on_pushButton_clicked()));
}
void MainWindow::requestPage(){
QUrl url("http://www.google.com");
QNetworkReply* reply = nam->get(QNetworkRequest(url));
}
void MainWindow::finishedSlot(QNetworkReply* reply){
qDebug() << "finishedSlot";
QVariant statusCodeV = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
QVariant redirectionTargetUrl = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
QByteArray bytes = reply->readAll(); // bytes
QString string(bytes); // string
ui->lcdNumber->display(22);
// if (reply->error() == QNetworkReply::NoError)
// {
// QImageReader imageReader(reply);
// QImage pic = imageReader.read();
// QByteArray bytes = reply->readAll(); // bytes
// QString string(bytes); // string
// ui->lcdNumber->display(22);
//qDebug()<<string;
// }
// else
// {
// }
}
void MainWindow::on_pushButton_clicked()
{
requestPage();
}
//mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QObject>
#include <QNetworkAccessManager>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
Ui::MainWindow *ui;
public slots:
void connect();
void requestPage();
void finishedSlot(QNetworkReply* reply);
void on_pushButton_clicked();
private slots:
private:
QNetworkAccessManager* nam;
};
#endif // MAINWINDOW_H
//main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow mConnect;
mConnect.show();
return a.exec();
}

Answer 1

Maybe it's me, but it seems that there's no connection between button clicked signal and on_pushButton_clicked slot.

Answer 2

Final working solution
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QNetworkAccessManager>
#include <QUrl>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QImageReader>
#include <QLCDNumber>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
nam = new QNetworkAccessManager();
//connect2();
//on_pushButton_clicked();
QObject::connect(ui->pushButton, SIGNAL(clicked()), this, SLOT(on_pushButton_clicked()));
QObject::connect(nam, SIGNAL(finished(QNetworkReply*)), this, SLOT(finishedSlot(QNetworkReply*)));
QObject::connect(nam, SIGNAL(finished(QNetworkReply*)), this, SLOT(finishedSlot(QNetworkReply*)));
ui->lcdNumber->display(66);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::connect2()
{
qDebug() << "connect";
//QObject::connect(nam, SIGNAL(finished(QNetworkReply*)),
//this, SLOT(finishedSlot(QNetworkReply*)));
//QObject::connect(nam, SIGNAL(clicked()), this, SLOT(finishedSlot(QNetworkReply* reply)));
//;
}
void MainWindow::requestPage(){
QUrl url("http://www.google.com");
QNetworkReply* reply = nam->get(QNetworkRequest(url));
}
void MainWindow::finishedSlot(QNetworkReply* reply){
qDebug() << "finishedSlot";
QVariant statusCodeV = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
QVariant redirectionTargetUrl = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
QByteArray bytes = reply->readAll(); // bytes
QString string(bytes); // string
ui->lcdNumber->display(11);
qDebug()<<string;
// if (reply->error() == QNetworkReply::NoError)
// {
// QImageReader imageReader(reply);
// QImage pic = imageReader.read();
// QByteArray bytes = reply->readAll(); // bytes
// QString string(bytes); // string
// ui->lcdNumber->display(22);
//qDebug()<<string;
// }
// else
// {
// }
}
void MainWindow::on_pushButton_clicked()
{
requestPage();
//connect();
}