connectivityhelper.cpp Example File
flickrdemo/connectivityhelper.cpp

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    #include "connectivityhelper.h"

    #include <QMessageBox>
    #include <QWidget>
    #include <QTimer>

    ConnectivityHelper::ConnectivityHelper(QNetworkSession *session, QWidget *parent) : QObject(parent),
            m_session(session)
    {
        connect(m_session,
                SIGNAL(error(QNetworkSession::SessionError)),
                this,
                SLOT(error(QNetworkSession::SessionError)));
    }

    void ConnectivityHelper::error(QtMobility::QNetworkSession::SessionError error)
    {
        if (error == QNetworkSession::UnknownSessionError) {
            if (m_session->state() == QNetworkSession::Connecting) {
                QMessageBox msgBox(qobject_cast<QWidget *>(parent()));
                msgBox.setText("This application requires network access to function.");
                msgBox.setInformativeText("Press Cancel to quit the application.");
                msgBox.setIcon(QMessageBox::Information);
                msgBox.setStandardButtons(QMessageBox::Retry | QMessageBox::Cancel);
                msgBox.setDefaultButton(QMessageBox::Retry);
                int ret = msgBox.exec();
                if (ret == QMessageBox::Retry) {
                    QTimer::singleShot(0, m_session, SLOT(open()));
                } else if (ret == QMessageBox::Cancel) {
                    emit networkingCancelled();
                }
            }
        } else if (error == QNetworkSession::SessionAbortedError) {
            QMessageBox msgBox(qobject_cast<QWidget *>(parent()));
            msgBox.setText("Out of range of network.");
            msgBox.setInformativeText("Move back into range and press Retry, or press Cancel to quit the application.");
            msgBox.setIcon(QMessageBox::Warning);
            msgBox.setStandardButtons(QMessageBox::Retry | QMessageBox::Cancel);
            msgBox.setDefaultButton(QMessageBox::Retry);
            int ret = msgBox.exec();
            if (ret == QMessageBox::Retry) {
                QTimer::singleShot(0, m_session, SLOT(open()));
            } else if (ret == QMessageBox::Cancel) {
                emit networkingCancelled();
            }
        }
    }