Cannot call element in qml

Hello world.

This is my code

.h

signals:
void complete(const QVariant &info);

"a.m."

QmlDocument *qml = QmlDocument::create("asset:///backup.qml").parent(this);
    // Create root object for the UI
    AbstractPane *root = qml->createRootObject();

    //connect to qml's function
    connect(this, SIGNAL(complete(QVariant)), root, SLOT(showStaffID(QVariant)));

. QML

import bb.cascades 1.0

Page {
    Container {
        objectName: "rootContainer"
        id: rootContainer
        layout: DockLayout {

        }
        ...................
        Container {

            layout: StackLayout {

            }
            Container {
                preferredWidth: maxWidth
                layout: DockLayout {
                }

                ...............
            }
            Container {
                leftPadding: 5
                rightPadding: 5
                topMargin: 50
                horizontalAlignment: HorizontalAlignment.Center
                layout: StackLayout {
                    orientation: LayoutOrientation.TopToBottom
                }
                Label {
                    id: introductionLabel
                    objectName: "introductionLabel"
                    textStyle {
                        base: SystemDefaults.TextStyles.TitleText
                        color: Color.Red
                        fontWeight: FontWeight.Bold
                    }
                    horizontalAlignment: HorizontalAlignment.Center
                    text: qsTr("sdfsdfsds")

                    verticalAlignment: VerticalAlignment.Center
                    multiline: true
                }

            }
        }

    }

    function showStaffID(info) {
        console.log(info);

        introductionLabel.text = "update"

    }
}

My problem is:

In

function showStaffID(info)

I can see the log of

console.log(info);

But I can't change the text of

introductionLabel

What is the problem with me?

Thank you

Thus, he created and pushed to navigationPane in QML:

var backup = backupPage.createObject();

In C++ there created again (but not used):

QmlDocument *qml = QmlDocument::create("asset:///backup.qml").parent(this);
    // Create root object for the UI
    AbstractPane *root = qml->createRootObject();

You will need to find and use an existing page instead. For example, using findChild:

Page *page = Application::instance()->scene()->findChild("objectNameOfPage");

I'm also confused on howStaffID slot is called, because you are backup.qml instantiated, but this slot machine seems to be set in the other file (home.qml).

Tags: BlackBerry Developers

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