Cascades Development

[marcossit]

Goodnight, you create an Exit button in my app with this code but I closed QML will enter it wrong? or there will be another code that can with a navigation button closing my app.

            ActionItem {
                title: "Exit"
                imageSource: "asset:///images/icons/exit.png"
                ActionBar.placement: ActionBarPlacement.OnBar
                onTriggered: {
                    _app.exitApp();
                   }

 

[greenback · Accepted solution]

@marcossit

To implement the quit function in xml.

3 Files are automatically generated in the src folder with you create new Cascades Project 

1. main.cpp
2. [app].cpp
3. [app].hpp

Open up [app.cpp]

Under 

locate the contstructor

using namespace bb::cascades;
App::App(bb::cascades::Application *app)
: QObject(app)
{

    // create scene document from main.qml asset
    // set parent to created document to ensure it exists for the whole application lifetime
    QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);

    // create root object for the UI
    AbstractPane *root = qml->createRootObject<AbstractPane>();
    // set created root object as a scene
    app->setScene(root);
}

IMPORTANT 

(bb::cascades::Application *app)

If not already there make sure bb::cascades::Application *app is between the parenthesis.

How To Force Quit Application from QML

You will need to execute the quit() method.
Reference: https://developer.blackberry.com/cascades/reference/bb__cascades__application.html


main.qml

Application.quit();

 
And in your code specifically, this will work:

 ActionItem {
                title: "Exit"
                imageSource: "asset:///images/icons/exit.png"
                ActionBar.placement: ActionBarPlacement.OnBar
                onTriggered: {
                    Application.quit();
                   }

 
That's it. Best of luck to you in your development!

Please LIKE & ACCEPT AS SOLUTION

[shaii]

@greenback I dont have Application context when i try to use it in QML page (auto-complete also doesnt detect it) do u know why it is?

@marcossit i manage to do it by connecting the Qt.quit signal to the app quit slot in c++

just paste this code in your [project name class].cpp after qml pointer initialization

QObject

::connect(qml->documentContext()->engine(), SIGNAL(quit()), app, SLOT(quit()));

[shaii]

@greenback i think i just noticed your mistake... you forget to set the app as a context property...
qml->setContextProperty("Application", this); is missing from your code