QML Loader Or createComponent/createObject memory management

[dchinna18]

I am developing application using Qt/QML in qnx and ubuntu desktop. I have used QML Loader to load the qml file.when i load the file using loader it occupies memory but thing is when i load and unload the file in loader, every time i load file it takes few memory and memory is continuous increasing. Actually in my application around 200 qml pages need to load, each page it increases memory and when i unload the page not decreasing memory, same behaviour for createComponent/createObject also. can any one provide the solution?

[vladstelmahovsky]

its hard to say anything w/o qt version and code samples

[dchinna18]

QT 5.3.2
Following is sample code, in main qml i am loading Samplerect1.qml and Samplerect2.qml
main.qml

import QtQuick 2.3
import QtQuick.Controls 1.2

Rectangle {
id: mainAppWind
visible: true
width: 640
height: 480
// title: qsTr("Hello World")

signal closedSgnl

property QtObject obj1;
property QtObject obj2;
property var component1
property var component2
Loader{
    id: loderId1

// active: true
// asynchronous: true
}

Loader{
    id: loderId2

// active: true
// asynchronous: true
}

Rectangle{
    id: mainrect1
    height: 100
    width: 100
    anchors.centerIn: parent
    color: "green"
    MouseArea{
        anchors.fill: parent
        onClicked: {

// loderId1.setSource("Samplerect1.qml")
component1 = Qt.createComponent("Samplerect1.qml")
obj1 = component1.createObject(mainAppWind);
}
}
}
Rectangle{
id: mainrect12
height: 100
width: 100
anchors.top: mainrect1.top
anchors.left: mainrect1.right
// anchors.leftMargin: 50
color: "yellow"
MouseArea{
anchors.fill: parent
onClicked: {
// loderId2.setSource("Samplerect2.qml")
component2 = Qt.createComponent("Samplerect2.qml")
obj2 = component2.createObject(mainAppWind);
}
}
}

Text {
    text: qsTr("Hello World")
    anchors.centerIn: parent
}
Component.onCompleted: {

}

onClosedSgnl: {
    console.log("destroying objecta")

    if(obj1)
    {
        obj1.destroy()
    }
    if(obj2)
    {
        obj2.destroy()
    }


}

}

Samplerect1:

import QtQuick 2.3

Rectangle {
id: rectIdSamp
width: 300
height: 50
objectName: "Samplerect1"
Image {
id: idImage1
width: 50
height: 50
source: "images.jpeg"
}
Image {
id: idImage2
anchors.left: idImage1.right
width: 50
height: 50
source: "index.jpeg"
}
Image {
id: idImage3
anchors.left: idImage2.right
width: 50
height: 50
source: "index2.jpeg"
}
Image {
id: idImage4
anchors.left: idImage3.right
width: 50
height: 50
source: "images1.jpeg"
}
MouseArea{
id: mAId1
anchors.fill: parent
onClicked: {
// loderId1.setSource("")
clearData()
}
}
Text {
id: text1
anchors.left: idImage4.right
text: qsTr("text1 data")
height: 20
width: 30
font.pixelSize: 12
}
Text {
id: text2
anchors.left: idImage4.right
anchors.top: text1.bottom
text: qsTr("text2 data")
height: 20
width: 30
font.pixelSize: 12
}
Text {
id: text3
anchors.left: idImage4.right
anchors.top: text2.bottom
text: qsTr("text3 data")
height: 20
width: 30
font.pixelSize: 12
}
Text {
id: text4
anchors.left: idImage4.right
anchors.top: text3.bottom
text: qsTr("text4 data")
height: 20
width: 30
font.pixelSize: 12
}
Text {
id: text5
anchors.left: idImage4.right
anchors.top: text4.bottom
text: qsTr("text5 data")
height: 20
width: 30
font.pixelSize: 12
}
Component.onDestruction: {

}
function clearData()
{
    closedSgnl()
}

}

Samplerect2:

import QtQuick 2.3

Item{
id: itemId
anchors.fill: parent
Rectangle {
id: rectIdSamp
width: 300
height: 50
objectName: "Samplerect1"
anchors.left: parent.left
anchors.leftMargin: 300
Image {
id: idImage1
// anchors.left: parent.right
width: 50
height: 50
source: "images11.jpeg"
}
Image {
id: idImage2
anchors.left: idImage1.right
width: 50
height: 50
source: "index22.jpeg"
}
Image {
id: idImage3
anchors.left: idImage2.right
width: 50
height: 50
source: "index21.jpeg"
}
Image {
id: idImage4
anchors.left: idImage3.right
width: 50
height: 50
source: "images12.jpeg"
}
MouseArea{
anchors.fill: parent
onClicked: {
// loderId2.setSource("")
rectIdSamp.clearData()
}
}

    function clearData()
    {
        closedSgnl()
    }

}

}