Scrolling listview with mouse wheel on Android

[LepaBrena]

I've tried so much examples: with scrollview, flicable, scrollbar, mousearea, but nothing works. Like there is not mouse wheel event at all.

This is example:


import QtQuick 2.0
import QtQuick.Controls 1.1

Item {
id: root

Rectangle {
id: scrollBar
width: 5
height: listView.visibleArea.heightRatio * (listView.height - 10)
y: 5 + listView.visibleArea.yPosition * (listView.height - 10)
x: parent.width - width - 3
z: 1000
visible: listView.visibleArea.heightRatio < 1
color: "#bbbbbb"
radius: 14
}


ListView {
id: listView
width: parent.width; height: parent.height
//clip: true
pixelAligned: true
boundsBehavior: Flickable.StopAtBounds

model: ContactModel {}
delegate: contactDelegate

MouseArea {
anchors.fill: parent
acceptedButtons: Qt.NoButton
onWheel: {
wheel.accepted = true
if (wheel.angleDelta.y !== 0) {
listView.flick(0, wheel.angleDelta.y * 5)
}
}
}
}

Component {
id: contactDelegate
Item {
width: 180; height: 50
Column {
Text {
text: '<b>Name:</b> ' + name
color: "white"
font.pixelSize: 20
}
Text {
text: '<b>Number:</b> ' + number
color: "white"
font.pixelSize: 20
}
}
}
}
}

Have any suggestions?

[anda_skoa]

Does it work on a desktop?

I.e. does it just not work on Android or not at all?

Cheers,
_

[LepaBrena]

It works on Desktop, but not on Android device.

[anda_skoa]

Hmm, and the wheel event works when the mouse area is not inside a flickable?

Cheers,
_

[LepaBrena]

I don't understand your question.

For given example, mouse wheel works in Desktop app but in Android app it does not.

[anda_skoa]

I don't understand your question.

If you have a MouseArea anywhere else than inside a list view delegate, does the wheel event work there?



For given example, mouse wheel works in Desktop app but in Android app it does not.
Yes, you already wrote that.

Cheers,
_

[LepaBrena]

I've tried this example. Same problem for Android. Squares are not resizing.


import QtQuick 2.0

Rectangle {
height: 700
width: 485
color: "#333333"

Column {
anchors.centerIn: parent
spacing: 2

Repeater {
model: ["#9ACD32", "#EEEEEE", "#FFD700", "#87CEEB"]

Rectangle {
property real scaleFactor: 1

height: 40 * scaleFactor
width: 60 * scaleFactor
color: modelData
anchors.horizontalCenter: parent.horizontalCenter

MouseArea {
anchors.fill: parent
onWheel: {
if (wheel.angleDelta.y > 0)
parent.scaleFactor += 0.2;
else if (parent.scaleFactor - 0.2 >= 0.2)
parent.scaleFactor -= 0.2;
}
}
}
}
}

Text {
anchors.bottom: parent.bottom
anchors.horizontalCenter: parent.horizontalCenter
color: "#FFD700"
text: "Rotate the mouse wheel pressing <Control> to resize the squares."
}
}

[anda_skoa]

Why again such a complicated example?
Why not try the most simple possible example just to see if wheel event in general doesn't work?

Always go for a test case that is as simple as possible!

A single MouseArea as the top level item should do:


import QtQuick 2.0

MouseArea {
// some widh/height

onWheel: console.log("wheel, delta=" + wheel.angleDelta);
}


Cheers,
_

[LepaBrena]

I've tried it first, but ok. This is result:

Windows:
qml: wheel, delta=QPoint(0, -120)
qml: wheel, delta=QPoint(0, -120)
qml: wheel, delta=QPoint(0, -120)
qml: wheel, delta=QPoint(0, -120)
qml: wheel, delta=QPoint(0, 120)
qml: wheel, delta=QPoint(0, 120)
qml: wheel, delta=QPoint(0, 120)
qml: wheel, delta=QPoint(0, 120)

Android:
Nothing

[anda_skoa]

Then it seems Wheel events are not working on Android.

Maybe check if there is a bug report for that.

Cheers,
_

[LepaBrena]

I've found this:
https://bugreports.qt.io/browse/QTBUG-43669?jql=text%20~%20%22mouse%20wheel%20android%22

How to know is this just for Qt 5.3 without installing another version of Qt? Any idea?

[anda_skoa]

This does indeed sound like the problem you are experiencing.

Which version of Qt are you using?

Cheers,
_

[LepaBrena]

Exactly Qt 5.3.2.

[LepaBrena]

After updating Qt, problem is still there.

[LepaBrena]

It was Qt problem. The problem is solved.
https://bugreports.qt.io/browse/QTBUG-43669