Writing applications for Ubuntu (including Ubuntu Touch) and questions about the application submission process to the Ubuntu Software Center. This covers both open source and commercial applications.

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6
votes
1answer
768 views

What are the design guidelines for appindicator icons?

I am creating a Unity AppIndicator using Python + PyGObject, but I wish for it's icon to be in standard Ubuntu style. Where can I find appropriate guidelines for using colours (or is it just white/...
5
votes
1answer
983 views

How to use Arguments in QML without getting qmlscene arguments

I'm trying to write a QML application to be launched by qmlscene. I want this to accept arguments, so I'm using the Arguments object. However, this gets the arguments passed to qmlscene as well as ...
4
votes
1answer
59 views

How to package a browser plugin and a gui app in a snap package

My app is a gui app (qt) and a browser plugin. The plugin is used only for firefox. When the user clicks a button I want to open my gui-app. I would like to use a snap package to do this, but I can ...
4
votes
1answer
64 views

Ubuntu Apps Developer Team

I'm writing on behalf of getting answers for a few questions. I have a team and we have to develop apps for Ubuntu Software Centre. I am the team leader and I have two members and we are growing fast,...
4
votes
1answer
785 views

How to get QML syntax highlighting in gedit?

QML files opened with gedit don't have syntax highlighting. Is there a package providing a gtksourceview lang.spec file for QML? If not, has anyone written a lang.spec than can be installed locally?
3
votes
1answer
43 views

Ubuntu Touch HTML5 app Orientation lock

Can somebody tell me how can I fix my HTML 5 app into portrait mode only?
3
votes
1answer
251 views

Internationalization of QML application using i18n

Does someone know all the steps needed to have the apps translated in multiple languages? I am using in my QML files i18n.tr() , and such words I need to translate I performed below steps ( ~/...
3
votes
1answer
368 views

Qt creator does not work correctly after installing ubuntu sdk

I installed qt-sdk before installing ubuntu-sdk on ubuntu 12.04. When the Develop, Examples, or Tutorials link on the welcome page is clicked it creates inactive windows and cannot close it normally. ...
3
votes
1answer
256 views

How to create and submit package for Qt application

I have an application that I developed in Qt and Ubuntu. Its primary target is Windows but I prefer working in Ubuntu for all sorts of obvious reasons, so I rebuild it using Qt under XP and create an ...
2
votes
1answer
248 views

AppArmor denial when trying to open file using content hub

When trying to open a file using content hub using C++ I get these errors: Opening with peer com.ubuntu.music_music_2.1.857 Sdk-Launcher> Application was resumed Sdk-Launcher> There has been a ...
2
votes
1answer
334 views

Python app crash after sending command “GPIO.setup( 7, GPIO.OUT)”?

Python app crash after sending command "GPIO.setup( 7, GPIO.OUT)" !!! Action step: pi@rp:~$ python3 Python 3.4.3 (default, Mar 26 2015, 23:09:09) [GCC 4.9.2] on linux Type "help", "copyright", "...
2
votes
1answer
250 views

Ubuntu Touch App with Simple UI (QMake) - how to connect C++ to QML

I've noticed that the Ubuntu SDK now has a template for an 'App with Simple UI (QMake)'. This creates a C++ Ubuntu application project with a sample UI containing a Label and a Button (Needs a 15.04 ...
2
votes
1answer
453 views

Where is the qt-mt (qt multithreaded) library on ubuntu 14.04?

I'm trying to install some software for a Mightex camera and the first step is to run a ./configure file, after getting a lot of messages where it checks for libraries it fails with the following: ...
2
votes
1answer
167 views

Ubuntu SDK, Ubuntu touch app: “Error: Error opening shm.”

I am building an app for Ubuntu Touch. It works well on desktop, but when I try to open it on nexus it starts opening a splash screen but immediately crashes. Here's the logs: t_shm() at lttng-ust-...
2
votes
1answer
27 views

Deleting a application draft

I accidentally started submitting a click application when I meant to submit a desktop application is there a good way to delete it in the draft state? I searched around the "Manage" menu and I tried ...
2
votes
1answer
504 views

Ubuntu, gtk 3.10.8, not able to visualize a menubar made by Glade

My problem is that I've drawn a UI with Glade, but the menubar doesn't want to be drawn. Here is the xml, just a sample: please try to check out the properties. It is a very simple menubar but I can'...
2
votes
1answer
264 views

Is it possible to develop Ubuntu Application using java

I am a Java Developer & want to develop application for Ubuntu. I also visited developer.ubuntu.com site and successfully installed Ubuntu SDK and Editor but it is on Unity code and HTML views. I ...
2
votes
1answer
71 views

What does desktop_validates mean?

In a review for my click package, I saw a message containing: desktop_validates What does it mean and how do I fix it?
2
votes
1answer
137 views

In-app paymnt methods

I'm interested in developing for Ubuntu (mostly phones) and I can't seem to find the guidelines on app publishing, will apps only work through the ubuntu software center, or can users download and ...
2
votes
1answer
53 views

Possible to download packaged deb file before final publishing on myapps portal?

first of all sorry if this is a stupid question (or the wrong place to ask said stupid question!), but I've looked all over for an answer and couldn't find one. I've recently submitted my game ...
2
votes
1answer
54 views

Issue With App In The Software Center

Hey I got my app published in the software center, (Yay!) but now I have a different. problem. When you go to download my app it says its free but but the button says buy where it normally says ...
2
votes
1answer
286 views

Get sensor values Ubuntu Touch

I'm new to Ubuntu applications and I'm trying to make an application for Ubuntu Touch that reads the values from the sensors (Accelerometer, Gyroscope,...) but I don't know where to begin. Which ...
2
votes
1answer
223 views

How to update my Ubuntu Software Center App

Ok so I programmed an app (GibberEng) and submitted it to the app store and it got published and all that. How do I make an update to that app. So that all the 80 people who have downloaded it receive ...
2
votes
1answer
32 views

How to use Ubuntu App Developer's Key system?

Okay so I made a package and submitted it to Ubuntu App Developer. It does not install any files directly, but does depend on Qt framework. The License Key system Ubuntu provides says it will look for ...
2
votes
1answer
974 views

Convertion of tiff image in Python script - OCR using tesseract

I want to convert a tiff image file to text document. My code perfectly as I expected to convert tiff images with usual font but its not working for french script font . My tiff image file contains ...
2
votes
1answer
70 views

Will Ubuntu get an asset set to allow Qt applications using GTK style buttons?

Given the recent movement towards Qt as a primary development platform for Ubuntu and the underlying Gnome standard application set: Are there plans to have GTK style buttons available in a simple ...
2
votes
1answer
768 views

(QML) Scroll multiple listviews

Is possible to scroll multiple Listviews together in qml?? this was my attempt: Flickable { id: scoreflick anchors.top: namesrow.bottom anchors.left: ...
2
votes
1answer
889 views

Ubuntu 12.10 - set alternating row colors in gtk3 TreeView

Ubuntu used to have alternating row colors for gtk TreeView widgets. Some applications still do, like Banshee. Alternating row colors would really help my application (written in python 2.7, and using ...
2
votes
1answer
426 views

Problem with libqt4-dev. Messed up dependencies

I'm running Ubuntu 12.04 and tried to update ubuntu-sdk but today it wasn't possible without adding phablet-team/tools PPA as described here https://wiki.ubuntu.com/Touch/Install#Step_1_-...
2
votes
1answer
143 views

Access native functions in ubuntu phone

I'm looking at app development for ubuntu phone and it really looks great! But is it possible to access the native functionality of the phone like make a phone call or save a file? The API ...
2
votes
1answer
75 views

Packaging commercial application

I'm developing a project tracking application that I intend to release not far in the future as a commercial (for purchase) app in the software center. I'm just trying to figure out how to best ...
2
votes
1answer
184 views

How to add in-app advertising?

I'd like to code something cool for the ubuntu software center. I'll release my app for free, but I'd like to add some in-app advertising. Is it possible ? how can I do that ? is it hard ? Thanks to ...
2
votes
1answer
200 views

Make Web Pages act like Unity Apps

Is thee a way to make web pages act like apps? What I want to do is to split many Chromium pinned tabs into apps. So, for example, I have 2 gmail accounts, 2 tabs in Chromium, and I want separate ...
2
votes
1answer
186 views

Custom widgets/controls in application indicators

I want to develop an app for ubuntu, that integrates inside the calendar indicator/menu. It should allow to enter info right from it, and have several controls like input boxes, drop downs, spinners ...
1
vote
1answer
62 views

No video shown in Ubuntu Touch QML app video player

I'm trying to play a video in an Ubuntu Touch QML app. The audio plays, but no video is shown. A minimalistic version: import QtQuick 2.4 import Ubuntu.Components 1.2 import QtMultimedia 5.5 ...
1
vote
1answer
31 views

Automated UI tests for Ubuntu

I wrote automated tests for user interface on Windows using Visual Studio. Is there an equivalent solution for Ubuntu?
1
vote
1answer
10 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 ...
1
vote
1answer
17 views

investigation of librsvg-dev

While testing the node-librsvg, which provides a node interface to convert svg to png images using librsvg-dev, I realized that it works really well on Ubuntu 12 , but some images can not be converted ...
1
vote
1answer
172 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 ...
1
vote
1answer
37 views

How to pass phone number to phone application from scope

I'd like to be able to pass a phone number to the phone application from within a preview of a scope. Is that possible? Is it done with action widgets? Is there an example of this somewhere in ...
1
vote
1answer
122 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 ...
1
vote
1answer
29 views

What does security_policy_version_matches_framework mean?

When uploading my click app to the store, I get an error in the automated review feedback: 1.2 != 1.3 (ubuntu-sdk-15.04) security_policy_version_matches_framework What does this mean, and how do I ...
1
vote
1answer
105 views

ubuntu14.04: opengl for qt development

since a half day i try to get qt-creator to compile ... but i get errors. This is the output i get, when i start to compile a standard graphical project of the qt-creator (just created this empty ...
0
votes
0answers
81 views

Error when running ubuntu phone emulator

I can launch the emulator in the devices tab, without any error. But when i try to run any html5 program/example, in the application output shows Warning: Permanently added '[127.0.0.1]:10000' (RSA) ...
0
votes
0answers
164 views

How to compile C/C++ applications for the Ubuntu BQ E4.5?

I run on my BQ E4.5 below the HOME of phablet in a jail a Linux based on vivid for ARMHF which is build as: $ mkdir myRoot $ cd myRoot $ sudo tar xzf ../vivid-preinstalled-touch-armhf.tar.gz $ sudo ...
0
votes
0answers
25 views

Use Ubuntu Lap(desk)top+UMTS-HSPA datamodem as SMARTPHONE

I have been advised to ask my question in Lanuchpad here too. I find that Ubuntu is focussing particularly into Smartphones / Calling Tablets. Very well. But I want to use our existing Lap(Desk)...
0
votes
0answers
217 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 ...
0
votes
0answers
32 views

Develop on Ubuntu Phone

Is it possible, and if so, how can I develop/run qml-apps using only my Ubuntu phone? As example I refer to the Terminal-IDE apps on android... I have tried the Terrarium app but that's only to ...
-1
votes
0answers
12 views

how to install IlluminationSoftwareCreator in 16.04

I read here: Unable to install Quickly on Ubuntu 16.04 that quickly is not available on 16.04 (correct me if i'm wrong). I went to: https://github.com/jsebean/IlluminationSoftwareCreator but i dont ...
-1
votes
0answers
27 views

Simple instructions to starting android app development on ubuntu 15.10

I have a 32-bit OS running ubuntu 15.10. For the past few nights, I have been trying to get started with android app development. I tried the old method of using eclipse with the ADT plugin but kept ...