Android: MouseArea.onClicked doesn't get called

Violet Giraffe

I have the following QML file:

import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.3
import ReaderView 1.0

ApplicationWindow {
    visible: true

    MouseArea {
        anchors.fill: parent

        onClicked: {
            console.log("onClicked!")
        }
    }

    ColumnLayout {
        spacing: 0
        anchors.fill: parent

        CReaderView {
            anchors.fill: parent
        }
    }
}

I'm tapping the screen of the Nexus 7 tablet but onClicked is never printed in the log. I also tried moving the MouseArea inside CReaderView to no avail. What's the deal? How can I detect a tap within the window (or, ideally, within the CReaderView)?

jeremy_k

I wonder if the issue is the output of console.log being filtered out through categorized logging rules. http://doc.qt.io/qt-5/qloggingcategory.html

Try setting the QT_LOGGING_RULES environment variable to "qml.debug=true".

Violet Giraffe

@jeremy_k
It's Android so I have no idea how to set an environment variable. Instead, I'll just call a C++ method that will use qDebug().
And turns out you're right! So does it mean I cannot rely on console for debug output from QML and must use my own class instead? Or can this be fixed (other than by adjusting the environment)?

jeremy_k

QLoggingCategory::setFilterRules() is the C++ equivalent of QT_LOGGING_RULES.