Questions related to the development of QML applications on the Ubuntu environment. QML is a core programming language for Ubuntu & Ubuntu Touch.

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1answer
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QT Creator cannot start ubuntu apps on ubuntu 16.04

If i create a new project with QT Creator (Ubuntu 16.04) QML App with C++ plugin (cmake) Framework: ubuntu-sdk-15.04.4-qml Desktop Unix-Generator (Desktop) ( CMake works without problems ) I start ...
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0answers
4 views

Non-existent property tools in Page

I have a code which used to work but after I upgraded to (K)ubuntu 16.04 and the latest Ubuntu-sdk, it doesn't work anymore. I get error Cannot assign to non-existent property "tools". This is my code ...
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0answers
37 views

How to use PageHeader on Ubuntu Desktop

I am trying to create an application for my Ubuntu Phone, that should be run on my desktop machine (15.10), too. It runs fine on my Ubuntu Phone (OTA 10), but when I try to run it on my desktop ...
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8 views

How to show a certain div in webview (qml)?

Is it possible to show a certain div from a webpage in qml webview for Ubuntu Touch?
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1answer
25 views

I need Ubuntu.Components 1.3 for Ubuntu 14.04

Newbie here. Been an IAR baremetal embedded guy for years. Ubuntu transition is painful. I've installed Ubuntu 14.04. I've installed SDK and Qt Creator and I'm trying to build...anything. ...
2
votes
1answer
69 views

Get the sum of all values in a specific column of a ListView in QML [closed]

How have the sum of a column in a list view? By example the total cost : ListModel { id: fruitModel ListElement { ...
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0answers
36 views

QML unit testing: running qmltestrunner

I'm on ubuntu 14.04. I installed the Ubuntu SDK IDE. Running a QML App on my Ubuntu phone via the IDE works fine. I'm following this tutorial on testing ...
0
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1answer
25 views

How to download and parse a gzipped xml file with qml in Ubuntu Touch?

Currency converter tutorial is very useful in explaining how to download and parse an xml file through XmlListModel, but it seems it is not possible to parse a gizipped file in this way. How could I ...
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0answers
31 views

Segfault running PyQt5 on Ubuntu Phone

I'm struggling with running a very simple pyqt5 application on the Ubuntu Phone, loading a QML file. I have installed extra python-qt5 packages for this. This is basically as stripped down as I can ...
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0answers
32 views

Ubuntu-touch QML MediaPlayer metaData

I'm not experienced at all. I have this simple code, it works fine on PC, but when I run it on ubuntu-touch it doesn't display metadata but a series of "undefined" (one for each playMusic.metaData*). ...
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0answers
41 views

How to control system volume with C++/QML?

Helo, I want to develop an app. It should control the system volume by day time. I have two questions: How to change system volume in C++/QML? How can I run my app as a service that will ...
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0answers
67 views

Ubuntu SDK Error 'could not find or load the Qt platform plugin “xcb”.'

I am trying to write my first ubuntu app using the Ubuntu SDK but keep running into an error. This error turns up both with QML and HTML5 apps. I am trying this just on the template for both project ...
0
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1answer
31 views

Why does XMLHttpRequest used in ubuntu sdk QML application produce “Object path cannot be empty” error

When I deploy my application to my Ubuntu phone via ubuntu SDK I get the following error: QNetworkManagerInterface::QNetworkManagerInterface(QObject*) nmReply "An AppArmor policy prevents this sender ...
0
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1answer
24 views

Ubuntu SDK IDE quits with Segmentation fault when running example code

I installed Ubuntu SDK from ppa:ubuntu-sdk-team/ppa on Ubuntu 14.04 LTS 64bit. Then I created device kit ubuntu-sdk-15.04 armhf. When I try to run with CTRL + R example below from: ...
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0answers
13 views

ubuntu touch screen-shot api corodva/html/qml

I want to capture screen via ubuntu touch app. Is there any api like camera or other apis which can help capture screen because usually we take screen shot by holding volume up button. It can be any ...
0
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1answer
27 views

Issues with CurrencyConverter qml tutorial

I'm trying to follow the tutorial at https://developer.ubuntu.com/en/apps/qml/tutorials/building-your-first-qml-app/ which states, "Select the Projects > Ubuntu > App with Simple UI template and click ...
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0answers
22 views

Ubuntu SDK: QTquick not installed?

Der all, I just installed the Ubuntu SDK on Trusty Tahr (64bit). The MyHtml5 example worked quite well, but now I tried a "Simple QML App Projekt". My framework choice was ubuntu-sdk-14.04-qml ...
1
vote
1answer
76 views

ListModel display and if it contains [closed]

I want to know how to display a list if it contains a character. Example: ListModel { id: fruitModel ListElement { name: "Apple" cost: 2.45 } ListElement { ...
1
vote
1answer
72 views

How to create and build snappy apps ?

I am very new to Ubuntu application development. I have to develop an application for snappy Ubuntu. Now I am confused about how to do it? So here are my few questions. Which language should I use ...
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1answer
37 views

Ubuntu sdk autopilot3 error

When I try to run the hello world application in de ubuntu sdk, i get this error: Can someone please help me to fix this?
3
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0answers
155 views

How do I develop a Ubuntu application using the Go language?

I want to develop some application for the Ubuntu platform. But I don't know C++. I can learn QML very easily. The problem is that the logic or process behind the scene in an application seems to use ...
0
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2answers
252 views

How to add element for QML ListModel using Javascript?

I have created one nested ListModel. ListModel { id: mainModel ListElement { mainName: "Alphabet" subAlpha: [ ListElement { alphaName: "A" }, ...
0
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1answer
43 views

Does Canonical have plans to build UI Toolkit APIs for the D programming language

There are APIs for C++, JavaScript and even Go. D Programming Language makes a good candidate for building Ubuntu Next apps and less complex compared to C++ IMO. It has good C++ bindings capability + ...
3
votes
1answer
80 views

Add image files in Ubuntu QML app with C++ plugins (qrc)

I'm writing an Ubuntu QML (phone) App with C++ plugins using ubuntu-sdk. My app includes a png image and in order to include the image in the binary (so it shows on the phone) I have created a qrc ...
0
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1answer
116 views

How to display a QWidget in Ubuntu Touch using QML and C++?

How can I display text from QTextEdit (a QWidget) using a QML frontend and a C++ backend? I am currently developing a Ubuntu Phone app using the qmake project. I need advanced text editing ...
1
vote
1answer
56 views

QML dynamic scoping not working (ReferenceError)

I am trying to reproduce the example here where the TitlePage.qml component creates two TitleText instances even though the TitleText type is in a separate file (under Section: Component Instance ...
0
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1answer
35 views

ubuntu phone textfield displayed different

I am trying to build a QML application for Ubuntu phone. My form looks ok on screen (desktop), but when I put the app on the phone, the display is off. The borders around my test fields are not ...
0
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0answers
14 views

Select Audio Device from within QML

I am trying to write a small qml app for audio playback. I was wondering, whether it is possible to choose the Audio Device from within QML (so without c++). The QtMultimedia.Audio element is not ...
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0answers
39 views

QML Ubuntu Touch: How share to another app?

I would like to share from a QML file a string to another application (through the native "Share to" page). I can't find documentation about this. My doubts are: Can it be done with an URL ...
1
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0answers
114 views

How to Send SMS and MMS using Ubuntu API

Is it possible to Send SMS and MMS using Ubuntu API? I've searched in the following documentation, but I cannot find anything about that. https://developer.ubuntu.com/api/apps/qml/sdk-15.04.1/ thx, ...
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0answers
85 views

How to perform a Dial Call using Ubuntu API

I'd like to know how to perform a Dial Call using Ubuntu API. I couldn't find anything in the API doc: https://developer.ubuntu.com/api/apps/qml/sdk-15.04.1/ thx,
1
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0answers
101 views

QtBluetooth support for Ubuntu Touch

I like to build a qml-based app with bluetooth support. My code works well for the Desktop Kit in the Ubuntu SDK but fails on the BQ Aquaris 4.5 with the error message 'module "QtBluetooth" is not ...
1
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0answers
86 views

ubuntu-sdk mkspec

I followed instructions in Ubuntu SDK to install the IDE. No problem. I can write an app and run it in the desktop, but not in my Ubuntu BQ 4.5. The kit is wrong and several errors appear: "Mkspec not ...
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0answers
96 views

TreeView in QML dosen't work?

I have installed the latest Qt 5.5.0, but there seems to be only QtQuick.Controls 1.0 and 1.1. I want to use TreeView, which is contained in the 1.4 version.
2
votes
1answer
113 views

Pure Qt application (QML/QtQuick) on Ubuntu Phone?

I have a Qt application that is based on QML/QtQuick and runs, among other platforms, on Android. Is it possible to compile this application without (major) modifications for Ubuntu phone? If yes, ...
-1
votes
1answer
119 views

How to save variables for all pages in qml?

I am currently working on a game for Ubuntu touch. It is as good as finished, but one thing does not work: I have multiple pages using PageStack and want to have some variables which i can reach, ...
0
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0answers
120 views

No decoder available for type 'video/x-msmpeg, msmpegversion=(int)42,

I am using QtMultimedia class in QML: http://doc.qt.io/qt-5/qml-qtmultimedia-video.html When I run the first example program shown in the above link, I get the following error: Warning: "No decoder ...
0
votes
1answer
24 views

How do you make the background of a dragged ListItem opaque?

The new ListItem has drag-and-drop capability built-in. By default, though, dragged items have a transparent background, which looks awful. (Why would this be the default?) The ListItem has a color ...
1
vote
1answer
22 views

How do you detect the end of a live drag with the new ListItem?

The new ListItem has the ability to do live drag-and-drop reorderings. When one is in progress, how do you detect its end? The ListItem had the ViewItems.onDragUpdated signal, which should fire for ...
0
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1answer
92 views

SDK QML slider on release signal

I am using the slider component from the 15.04 Ubuntu SDK components, see here for the docs. Currently, there is no signal for releasing the slider handle, but there is one for when it is touched ...
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0answers
57 views

Can't set visibility property on QML MainView

Am I supposed to be able to write in a button's onClick method: mainView.visibility=FullScreen ? (I have set my MainView's ID to "mainView".) When I try this I get the error Error: Cannot assign ...
0
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1answer
69 views

How can I save the CurrentItem of Picker in QML?

Helo, I defined in mainView the following functions: property var db: null function openDB() { if(db !== null) return; // db = LocalStorage.openDatabaseSync(identifier, version, ...
0
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1answer
45 views

How to keep an UbuntuListView between its boundaries?

I have an UbuntuListView in a QML application for Ubuntu Touch. Above it, there's another component - a TextField. The initial position of the list looks good. Also, if the list is smaller than the ...
0
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1answer
159 views

How to install the qmlscene module version need?

I'm trying to run a QML without the Ubuntu SDK in Ubuntu 14.04. costales@desktop:~/Desktop$ qmlscene qml/Main.qml file:///home/costales/Desktop/unav_jkb/qml/Main.qml:16 module "QtQuick" version 2.4 ...
3
votes
1answer
251 views

How to handle QML application shutdown?

I need to persist the state of a QML application when it shuts down, and to read it when the application loads. I tried using Component.onCompleted and Component.onDestruction inside the MainView's ...
0
votes
1answer
66 views

How to delete from an UbuntuListView?

I'm trying to learn how to use an UbuntuListView. Items will be added at runtime, but for demo I just hardcoded them. What I need is a way of removing existing list items. Here's my code and a ...
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0answers
40 views

ListItemActions leadingActions and trailingActions not working

I am having trouble getting leadingActions and trailingActions in ubuntu-sdk ListItemActions to work. QtCreator just underlines the two properties and throws an error message about "cannot assign to ...
0
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0answers
186 views

How to keep model and view in sync for a QML List Item?

I have a list with multiple selection and a button. All list items are checked. When I click the button, I want the second item to become unchecked. I am also changing the displayed text (just for ...
1
vote
1answer
98 views

QtQuick Controls for armfh kit Ubuntu SDK (Ubuntu 15.04)

An app that I am working on compiles and runs fine on the desktop but when run from the Aquaris 4.5 Ubuntu SDK keeps throwing messages about QtQuick Controls not found. On checking the path, I found ...
1
vote
2answers
187 views

Access document files from QML

I am writing a QML-App for Nexus 4 running Ubuntu touch. I have to access some files stored in /home/phablet/Documents. As I read here: Use Pictures for an Image object in QML for Ubuntu Touch this ...