Triggering Qt custom context menu in android

[Parsa Mousavi]

Hello everybody.I'm trying to get started with android development using Qt and now I want to create a custom context menu for android in C++.

What I've done so far is as follows:

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ui->lcdNumber->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(ui->lcdNumber , SIGNAL(customContextMenuRequested(const QPoint &)) \
            , this , SLOT(showContextMenu(const QPoint &)));
}

void MainWindow::showContextMenu(const QPoint& point)
{
    Q_UNUSED(point);

    //To open up the menu in the cursor position instead of the widget's top-left point
    QPoint mousePos = QCursor::pos();              

    QMenu *cMenu = new QMenu(tr("Sample Context Menu"));

    QAction closeAction("Close" , this);
    QAction yetAnotherAction("Yet another action" , this);
    QObject::connect(&closeAction , SIGNAL(triggered()) , this , SLOT(close()));

    cMenu->addAction(&yetAnotherAction);
    cMenu->addAction(&closeAction);
    cMenu->exec(mousePos);
}

This is just a demo. It works well in desktop when I right-click the widget lcdNumber but in android I'm not able to open up the menu by long-clicking(i.e touching and holding) it.

Also the example mentioned here using QtQuick doesn't work for me and results in this error:

LOGCAT: W libmenuDemo-qtquick_armeabi-v7a.so: QMetaObject::invokeMethod: No such method QQuickRootItem::inputMethodQuery(Qt::InputMethodQuery,QVariant)

How can I achieve that?