QAbstractListModel not populating data to Listview

[DevQt]

Hi ,

I am trying to populate a Listview using QAbstractListModel. But, the Listview is not displaying anything on the screen. Can anyone help me to figure out the issue here .......

   Below are my source files : qtquick2applicationviewer.h

//###################################

#ifndef QTQUICK2APPLICATIONVIEWER_H
#define QTQUICK2APPLICATIONVIEWER_H

#include <QtQuick/QQuickView>
#include<QString>
#include <QAbstractListModel>
#include <QStringList>

class QtQuick2ApplicationViewer : public QQuickView
{
Q_OBJECT

public:
explicit QtQuick2ApplicationViewer(QWindow *parent = 0);
virtual ~QtQuick2ApplicationViewer();

void setMainQmlFile(const QString &file);
void addImportPath(const QString &path);

void showExpanded();

private:
class QtQuick2ApplicationViewerPrivate *d;
};

class Animal
{
public:
Animal(const QString &type, const QString &size);

QString type() const;
QString size() const;

private:
QString m_type;
QString m_size;
};

class AnimalModel : public QAbstractListModel
{
Q_OBJECT
//Q_PROPERTY(QList<Animal> animals READ getListData NOTIFY animalModelChanged)

public:
enum AnimalRoles {
TypeRole = Qt::UserRole + 1,
SizeRole
};

AnimalModel(QObject *parent = 0);

void addAnimal(const Animal &animal);

int rowCount(const QModelIndex & parent = QModelIndex()) const;

QVariant data(const QModelIndex & index, int role = Qt::DisplayRole) const;

//const QList<Animal> getListData() { return m_animals; }

signals:
void animalModelChanged();

protected:
QHash<int, QByteArray> roleNames() const;
private:
QList<Animal> m_animals;
};
#endif // QTQUICK2APPLICATIONVIEWER_H

//###############################

qtquick2applicationviewer.cpp

//####################################

#include "qtquick2applicationviewer.h"

#include <QtCore/QCoreApplication>
#include <QtCore/QDir>
#include <QtQml/QQmlEngine>

class QtQuick2ApplicationViewerPrivate
{
QString mainQmlFile;
friend class QtQuick2ApplicationViewer;
static QString adjustPath(const QString &path);
};

QString QtQuick2ApplicationViewerPrivate::adjustPath(const QString &path)
{
return path;
}

QtQuick2ApplicationViewer::QtQuick2ApplicationViewer(QWindow *parent)
: QQuickView(parent)
, d(new QtQuick2ApplicationViewerPrivate())
{
connect(engine(), SIGNAL(quit()), SLOT(close()));
setResizeMode(QQuickView::SizeRootObjectToView);
}

QtQuick2ApplicationViewer::~QtQuick2ApplicationViewer()
{
delete d;
}

void QtQuick2ApplicationViewer::setMainQmlFile(const QString &file)
{
d->mainQmlFile = QtQuick2ApplicationViewerPrivate::adjustPath(file);
setSource(QUrl::fromLocalFile(d->mainQmlFile));
}

void QtQuick2ApplicationViewer::addImportPath(const QString &path)
{
engine()->addImportPath(path);
}

void QtQuick2ApplicationViewer::showExpanded()
{
#if defined(Q_WS_SIMULATOR)
showFullScreen();
#else
show();
#endif
}

Animal::Animal(const QString &type, const QString &size)
: m_type(type), m_size(size)
{
}

QString Animal::type() const
{
return m_type;
}

QString Animal::size() const
{
return m_size;
}

AnimalModel::AnimalModel(QObject *parent)
: QAbstractListModel(parent)
{
}

void AnimalModel::addAnimal(const Animal &animal)
{
beginInsertRows(QModelIndex(), rowCount(), rowCount());
m_animals << animal;
endInsertRows();
}

int AnimalModel::rowCount(const QModelIndex & parent) const {
Q_UNUSED(parent);
return m_animals.count();
}

QVariant AnimalModel::data(const QModelIndex & index, int role) const {
if (index.row() < 0 || index.row() >= m_animals.count())
return QVariant();

const Animal &animal = m_animals[index.row()];
if (role == TypeRole)
	return animal.type();
else if (role == SizeRole)
	return animal.size();
return QVariant();

}

QHash<int, QByteArray> AnimalModel::roleNames() const {
QHash<int, QByteArray> roles;
roles[TypeRole] = "type";
roles[SizeRole] = "size";
return roles;
}

//###################################
main.qml

ListView {
width: 200; height: 250

model: myModel
delegate: Text { text: "Animal: " + type + ", " + size }

}

// main.cpp

// ##################
#include "qtquick2applicationviewer.h"
#include <QtGui/QGuiApplication>
#include <QQmlContext>

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

AnimalModel model;
//model = new AnimalModel();

model.addAnimal(Animal("Wolf", "Medium"));
model.addAnimal(Animal("Polar bear", "Large"));
model.addAnimal(Animal("Quoll", "Small"));

QQuickView view;
view.setResizeMode(QQuickView::SizeRootObjectToView);
QQmlContext *ctxt = view.rootContext();
ctxt->setContextProperty("myModel", &model);

//qmlRegisterType<model>("com.example", 1, 0, "myModel");

QtQuick2ApplicationViewer viewer;
viewer.setMainQmlFile(QStringLiteral("main.qml"));


viewer.showExpanded();

return app.exec();

}

//####################

[SGaist]

Hi,

Please don't post the same thread in multiple sub-forum, one is enough.

Duplicates

Closing this one.