Sheet does not work in a Menu system

I am using a sheet in the drop down menu to my application. I mean here the menu items, you can use when you pull down from the top - usually you will find information and settings in there.

But when I add a piece to this menu, it works once, next time I pull down the menu button appears and does nothing, then after that, pulling down the top did anything.

To re-create it, all you have to do is to create a standard project of Cascades with a Navigation pane. Then update the QML for the initial screen (main.qml) to the one below. The idea is that the dropdown displays a 'help page' information about the application. All the user can do on this page is close. If the only changes are the addition of MenuItem and the attached object "leaf".

I don't see what I did wrong, but then I'm pretty new to all this. So, any help would be appreciated.

Thank you.

// Navigation pane project template
import bb.cascades 1.0

NavigationPane {
    id: navigationPane
    //! Add pull down menu item to push info screen
    Menu.definition: MenuDefinition {
        helpAction: HelpActionItem {
            onTriggered : {
                console.log("NavigationPane - info.open()");
                infoSheet.open();
            }
        }
    }
    Page {
        // page with a picture thumbnail
        Container {
            background: Color.Black
            layout: DockLayout {
            }
            Button {
                horizontalAlignment: HorizontalAlignment.Center
                verticalAlignment: VerticalAlignment.Center
                text: qsTr("Show detail")
                imageSource: "asset:///images/picture1thumb.png"
                onClicked: {
                    // show detail page when the button is clicked
                    var page = getSecondPage();
                    console.debug("pushing detail " + page)
                    navigationPane.push(page);
                }
                property Page secondPage
                function getSecondPage() {
                    if (! secondPage) {
                        secondPage = secondPageDefinition.createObject();
                    }
                    return secondPage;
                }
                attachedObjects: [
                    ComponentDefinition {
                        id: secondPageDefinition
                        source: "DetailsPage.qml"
                    }
                ]
            }
        }
    }
    //! Add Info sheet as attached item
    attachedObjects: [
        Sheet {
            id: infoSheet
            Page {
                titleBar: TitleBar {
                    title: "Info"
                    visibility: ChromeVisibility.Visible
                    dismissAction: ActionItem {
                        title: "Back"
                        onTriggered: {
                            // Hide the Sheet.
                            console.log("infoSheet - infoSheet.close()");
                            infoSheet.close();
                        }
                    }
                }
                Container {
                    layout: DockLayout {
                    }
                    Container {
                        TextArea {
                            text: "Information on Application"
                        }
                    }// Text Area Container
                }// Edit pane Container
            }// Page
        }// Sheet
    ]
    onCreationCompleted: {
        // this slot is called when declarative scene is created
        // write post creation initialization here
        console.log("NavigationPane - onCreationCompleted()");

        // enable layout to adapt to the device rotation
        // don't forget to enable screen rotation in bar-bescriptor.xml (Application->Orientation->Auto-orient)
        OrientationSupport.supportedDisplayOrientation = SupportedDisplayOrientation.All;
    }
}

I could have found a workaround for this problem. Try to put your paper in a ComponentDefinition and then dynamically create the sheet whenever you want to display. Something like:

/ * sets the sheet * /.

attachedObjects:]

{ComponentDefinition}

ID: mySheetDefinition

{Sheet

your content here

}

]

/ * display the worksheet * /.

var mySheet = mySheetDefinition.createObject ();

mySheet.open ();

I'm still testing other issues, but it seems to work OK and my application menu remains functional in this way

Tags: BlackBerry Developers

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