Documentation code example does nothing on desktop

[Stuart Langridge]

The documentation example on http://developer.ubuntu.com/api/qml/sdk-1.0/Ubuntu.Content.ContentHub/ for importing content via the content hub (once fixed to be a working app as per Bug #1249264) does not actually import any content.

Code tweaked to look like this:

import QtQuick 2.0
import Ubuntu.Components 0.1
import Ubuntu.Content 0.1
Rectangle {
    id: root
    width: units.gu(60)
    height: units.gu(60)
    Column {
        Button {
            text: "Import from default"
            onClicked: {
            var peer = ContentHub.defaultSourceForType(ContentType.Pictures);
            activeTransfer = ContentHub.importContent(ContentType.Pictures, peer);
            }
        }
        Button {
            text: "Import from a selectable list"
            onClicked: {
                activeTransfer = ContentHub.importContent(ContentType.Pictures);
                activeTransfer.selectionType =ContentTransfer.Multiple;
                activeTransfer.start();
            }
        }
    }
    ContentImportHint {
        id: importHint
        anchors.fill: parent
        activeTransfer: root.activeTransfer
    }

    property list<ContentItem> importItems
    property var activeTransfer

    Connections {
        target: root.activeTransfer
        onStateChanged: {
            if (root.activeTransfer.state === ContentTransfer.Charged)
            importItems = root.activeTransfer.items;
        }
    }
}

On startup, this error is thrown in the console:
file:///home/aquarius/Scratch/contenthub.qml:35: Unable to assign [undefined] to QObject*
line 35 is " target: root.activeTransfer".

Pressing the "import from default" button does nothing, visually, and dumps this to the console:
QObject* qml_content_hub(QQmlEngine*, QJSEngine*)
QmlImportExportHandler::QmlImportExportHandler(QObject*)
virtual void com::ubuntu::content::Hub::register_import_export_handler(com::ubuntu::content::ImportExportHandler*)
APP_ID isn't set, the handler can not be registered
ContentPeer* ContentHub::defaultSourceForType(int)
static const com::ubuntu::content::Type& ContentType::contentType2HubType(int) 2
ContentPeer::ContentPeer(QObject*)
ContentTransfer* ContentHub::importContent(int, ContentPeer*) 2 ContentPeer(0x1927890)
static const com::ubuntu::content::Type& ContentType::contentType2HubType(int) 2
ContentTransfer::ContentTransfer(QObject*)
void ContentTransfer::setTransfer(com::ubuntu::content::Transfer*, ContentTransfer::Direction)
void ContentTransfer::updateSelectionType()
void ContentTransfer::updateStore()
void ContentTransfer::updateState()
ContentTransfer::State ContentTransfer::state() const
ContentTransfer::State ContentTransfer::state() const
void ContentTransfer::updateStore()

It is possible that "APP_ID isn't set, the handler can not be registered" is a relevant error message here, but nothing says anywhere what an "APP_ID" is, and the example does not include one.

Pressing the "Import from a selectable list" fills the window with a mostly-opaque black background and an orange spinner, and nothing else. The following is written to the console:

QObject* qml_content_hub(QQmlEngine*, QJSEngine*)
QmlImportExportHandler::QmlImportExportHandler(QObject*)
virtual void com::ubuntu::content::Hub::register_import_export_handler(com::ubuntu::content::ImportExportHandler*)
APP_ID isn't set, the handler can not be registered
ContentTransfer* ContentHub::importContent(int) 2
static const com::ubuntu::content::Type& ContentType::contentType2HubType(int) 2
ContentTransfer::ContentTransfer(QObject*)
void ContentTransfer::setTransfer(com::ubuntu::content::Transfer*, ContentTransfer::Direction)
void ContentTransfer::updateSelectionType()
void ContentTransfer::updateStore()
void ContentTransfer::updateState()
ContentTransfer::State ContentTransfer::state() const
ContentTransfer::State ContentTransfer::state() const
void ContentTransfer::setSelectionType(ContentTransfer::SelectionType) 1
bool ContentTransfer::start()
void ContentTransfer::updateStore()
void ContentTransfer::updateSelectionType()
void ContentTransfer::updateState()
ContentTransfer::State ContentTransfer::state() const
ContentTransfer::State ContentTransfer::state() const
ContentTransfer::State ContentTransfer::state() const
file:///usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/Popups/Dialog.qml:175:9: QML Column: Binding loop detected for property "height"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/Popups/Dialog.qml:175:9: QML Column: Cannot specify top, bottom, verticalCenter, fill or centerIn anchors for items inside Column. Column will not function.
file:///usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/Popups/Dialog.qml:175:9: QML Column: Cannot specify top, bottom, verticalCenter, fill or centerIn anchors for items inside Column. Column will not function.

Since I do not create any Dialogs, I assume this is a bug in the contenthub's creation of a Dialog?

[Ken VanDine (ken-vandine)]

This example requires the default photo application be installed, in this case installing gallery-app fixed this problem for Stuart.