The program has unexpectedly finished - app crashed - qt

Question

I have a problem with Qt Charts in QML modeling. I have a simple application that implements a very simple ChartView. As I run the application, it crashed and I get the error in Application Output The program has unexpectedly finished.
I added in my src.pro
QT += qml quickcontrols2 charts
and my applications is this
import QtCharts 2.2
ApplicationWindow {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
ChartView {
anchors.fill: parent
theme: ChartView.ChartThemeBrownSand
antialiasing: true
PieSeries {
id: pieSeries
PieSlice { label: "eaten"; value: 94.9 }
PieSlice { label: "not yet eaten"; value: 5.1 }
}
}
}
How do I have this problem?

Answer 1

Check if you are using QGuiApplication instead of QApplication in your main.cpp.
The following example works properly, but it crashes if we use QGuiApplication in main():
Note: Since Qt Creator 3.0 the project created with Qt Quick Application wizard based on Qt Quick 2 template uses QGuiApplication by default. As Qt Charts utilizes Qt Graphics View Framework for drawing, QApplication must be used. The project created with the wizard is usable with Qt Charts after the QGuiApplication is replaced with QApplication.
More info here.
main.cpp
#include <QApplication>
#include <QQuickView>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QQuickView *view = new QQuickView;
view->setSource(QUrl(QLatin1String("qrc:/main.qml")));
view->show();
return app.exec();
}
main.qml
import QtQuick.Controls 2.0
import QtQml 2.2
import QtCharts 2.0
ApplicationWindow {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
ChartView {
anchors.fill: parent
theme: ChartView.ChartThemeBrownSand
antialiasing: true
PieSeries {
id: pieSeries
PieSlice { label: "eaten"; value: 94.9 }
PieSlice { label: "not yet eaten"; value: 5.1 }
}
}
}