How to do it…

Animating QML objects is really easy if you perform the following steps:

1. Create a Rectangle object and add a scale animator to it:

Rectangle {
    id: myBox;
    width: 50;
    height: 50;
    anchors.horizontalCenter: parent.horizontalCenter;
    anchors.verticalCenter: parent.verticalCenter;
    color: "blue";
    ScaleAnimator {
        target: myBox;
        from: 5;
        to: 1;
        duration: 2000;
        running: true;
    }
}

2. Add a rotation animator and set the running value in the parallel animation group, but not in any of the individual animators:

ParallelAnimation {
    ScaleAnimator {
        target: myBox;
        from: 5;
        to: 1;
        duration: 2000;
    }
    RotationAnimator {
        target: myBox;
        from: 0;
        to: 360;
        duration: 1000;
    }
    running: true;
}

3. Add an easing curve to the scale animator:

ScaleAnimator {
    target: myBox;
    from: 5;
    to: 1;
    duration: 2000;
    easing.type: Easing.InOutElastic;
    easing.amplitude: 2.0;
    easing.period: 1.5;
    running: true;
}