QML ActivityIndicator

import QtQuick 2.0

Image {
    fillMode: Image.PreserveAspectFit
    source: "qrc:/img/activity_indicator_bg"
    smooth: true

    Image {
        anchors.fill: parent
        fillMode: Image.PreserveAspectFit
        source: "qrc:/img/activity_indicator"
        smooth: true

        NumberAnimation on rotation {
            from: 0; to: 360
            loops: Animation.Infinite
            running: parent.visible === true
            duration: 1000
        }
    }

}