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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1
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1answer
600 views

Quickly ubuntu-application + indicator template don't work

I've started to work with quickly and python (because I wanted to have some GTk3 integration and create and appindicator), and so I create the projecto like this : quickly create ubuntu-application ...
8
votes
1answer
323 views

Would a Unity lens written for Unity 3D also work in Unity 2D?

I am thinking of writing a few lens features to link Unity into some business web applications, do I have to target both Unity variants separately or can I do one and assume the other will just work?
7
votes
2answers
248 views

Ubuntu SDK: How can I see error logs for my ubuntu touch app?

I've built an ubuntu touch app, it works well on desktop, but when I install it on the device and try to launch, it crashes. Where can I find error logs or any other output that the app can give me to ...
5
votes
1answer
240 views

How does the PPA fit into the scenario of publishing an application to the Ubuntu Software Center?

I've been going through docs for the past couple of hours but I haven't understood what the PPA is? I have a cross-platform Java application that I'd like to publish to the Ubuntu Software Center. My ...
5
votes
1answer
165 views

Can I use old code by myself to build on for my entry in the Ubuntu App Showdown contest?

Or does it have to be started completely from scratch at 18th of June?
4
votes
1answer
700 views

Is GTK+ supported on Ubuntu for phones

I wondered if GTK UI library would be supported on Ubuntu phone and tablet ? I know the SDK for mobile encourage QML/QT but will it be still possible to develop apps for phones, and especially ...
3
votes
2answers
518 views

Error while running Quickly

Getting an error while running quickly app: Creating project directory sata Creating bzr repository and committing Launching your newly created project! (sata:2701): GLib-GIO-ERROR **: Settings ...
2
votes
2answers
103 views

How to define multiline long_description in quickly's setup.py?

When I try using triple quotes python-mkdebian crashes loudly with apport appearing after quickly package [--extras] and when I just make multiline string in single quotes the latter stops silently.
2
votes
2answers
310 views

start development in Ubuntu [duplicate]

Possible Duplicate: How do I develop .NET apps on Ubuntu? What is the best way to develop apps for Ubuntu? I used to develop desktop applications for Windows, I know how to develop using ...
1
vote
1answer
526 views

Why am I getting the error “Cannot assign to non-existent property ”head"?

I'm actually on Trusty, and I want to try new "head" property which comes with API 14.10 of Ubuntu SDK. When I launch qmlscene to test my applicaton, I get this error : Cannot assign to ...
1
vote
3answers
5k views

Why does Launchpad fail to find 'glib-compile-schemas' while building for PPA?

So, I'm trying to publish my app in my PPA, but I'm having problems related with building my app. Here you have the output: /bin/sh: 1: glib-compile-schemas: not found make[1]: *** ...
1
vote
1answer
97 views

How do I write and submit applications for Ubuntu?

I've been a Linux user for a while, and C++ programmer for a while longer. Is there a way to write applications for Ubuntu, and how to submit them?
0
votes
1answer
191 views

Ubuntu Phone - How can I program app running, when device screen is turned off?

How can I program my mobile application to be still running in the background, after the user turned off the screen? I'm developing the application in QML.
0
votes
2answers
403 views

Developing NodeJS for Ubuntu Touch:

I'm new here and interested in developing apps for Ubuntu Touch. Already got the developer version running on a tablet model P3110. What I'd like to know is if it's compatible with NodeJS or if it's ...
0
votes
1answer
362 views

Cant download qt-components-ubuntu on my machine [duplicate]

Possible Duplicate: How do I install the QML toolkit on 12.04? I was trying to get some hands on ubuntu mobile app development and followed the instructions of downloading the qt5-beta. But ...
0
votes
1answer
102 views

App Submission for Showdown

If I submit my app to the ARB today, can I make any changes before Monday?. Or will the ARB consider my app based on the version that was submitted on the submission day? ie If I make changes will I ...
53
votes
1answer
36k views

Should I use PyQt or PySide for a new Qt project?

Recently I've been involved in conversations about creating a Quickly template for a Qt and QtQuick Ubuntu app. The idea is to make it as easy to develop Qt apps from concept to package as it is right ...
46
votes
4answers
35k views

Gradle in Ubuntu for Launchpad

It appears that Ubuntu doesn't have new versions of Gradle in their repositories for some reason. I need it for a project that will be build by Launchpad. What should I do about this?
13
votes
4answers
5k views

Writing indicators with Python, GIR and GTK3

I'm writing an application that needs to use an indicator. I've done this in the past using PyGTK and GTK2, using as reference this document: ...
37
votes
3answers
16k views

Why no library files installed for google test?

The libgtest-dev package seems only install header files to the system, but not the static and dynamic libraries which should be installed under /usr/lib. Is it a bug?
31
votes
2answers
8k views

Connect WebKit WebView form to a Python callback?

I am writing a small Python and WebKit app; I am using WebKit as the UI for my app. What I want to do is to create an interactive element in WebKit (namely a combo box or a set of clickable regions) ...
8
votes
3answers
6k views

Is there way to compile Qt5 programs, written with c++, to Ubuntu Touch?

I'm creating a program with Qt5 and C++, and I would like to compile my program for Ubuntu Touch Preview or Ubuntu desktop arm. I'm running those systems on Nexus 7. I have found the right C++ ...
16
votes
3answers
2k views

How can I use the voice recognition used by Android on Ubuntu?

If I'm developing an Android app that uses TTS and Voice recognition, which libraries are used for the same voice recognition and speech on Ubuntu? I'm assuming espeak for text to speech, but I'm ...
15
votes
2answers
1k views

How do you package HTML applications for Ubuntu Touch?

Gomobile talks about HTML5 applications but doesn't explain how to package or install them on Ubuntu Phone/Touch. Is the "Unity Webapps" stuff webapps the same for Ubuntu Touch? (API documentation ...
19
votes
2answers
271 views

How to comply with this guideline for submitting an application to the Software Center?

I was reading through the Ubuntu Developer Programme Agreement for submitting applications to the Software Center and stubled across the following clause: 3.1 You must first test Apps you submit ...
22
votes
2answers
753 views

How does Application Review Board work?

According to https://wiki.ubuntu.com/AppReviews the Application Review Process is good both for upstream software developers and Ubuntu packagers. The point seems to be that the upstream developers ...
13
votes
6answers
473 views

Multiple versions of the same app on Ubuntu Software Centre?

I already published my proprietary app on Ubuntu Software Centre (https://myapps.developer.ubuntu.com), and now I want to update it with the new version. This time I wanted to upload multiple builds ...
8
votes
2answers
2k views

How do I create a working indicator with Qt/C++?

I am using Qt IDE in order to build my application so as to participate to the Ubuntu Showdown contest. In my application, I've done the following: void show_app(MainWindow *data) { //this works ...
6
votes
1answer
619 views

How to create a PPA for C++ program?

My questions are: c++/gtkmm project created with NetBeans. How to make package to PPA from this? I have created target files structure (*.desktop, iconfile, ui glade files). Binary goes to ...
13
votes
1answer
2k views

What is the preferred way to store application settings?

From a developer's perspective. Should I use a text-based config in /etc or in $HOME? Or something else?
11
votes
3answers
1k views

Are there Human Interface Design Guidelines for Unity Development?

I was surfing developer.ubuntu.com, searching for Unity-Human-Interface-Design-Guidelines or a Unity-HIG, but I didn't find anything. I've seen design.ubuntu.com, but that's not what I'm talking ...
9
votes
2answers
1k views

Why do the GNOME symbolic icons appear darker in a running application?

I'm creating an application that uses symbolic icons from the default theme. However, there are a few icons that I need that cannot be represented by those from the default theme, so I'm creating my ...
7
votes
1answer
684 views

How to embed a GtkAboutDialog's content in a GtkNotebook widget

I'm writing a Python app that is tab-based, and I don't want it to have any additional pop-up dialogs. I'd like to use the Gtk.AboutDialog functionality, but I don't want it to appear as a separate ...
6
votes
3answers
2k views

Getting Quickly to use Gvim instead of Gedit

How do I get Quickly to use Gvim (or just vim in a terminal) as its default text editor instead of Gedit? If this can be done, I must be doing it wrong... Ubuntu 10.10 AMD64.
5
votes
1answer
1k views

Where is the documentation for programming OpenGL ES for Ubuntu Touch?

How can I program an OpenGL ES program for Ubuntu Touch? I have installed QtCreator and the Ubuntu SDK, but I can't seem to find any documentation about this topic.
5
votes
4answers
6k views

Can't build gcc anymore since upgrade to 11.10

On Monday I've upgraded to from Ubuntu 11.04 (my initial installation) to 11.10 and now I can't build gcc from source anymore. Since I forgot to uninstall the gcc package before the upgrade, Ubuntu ...
1
vote
1answer
184 views

How to import Qt app into Quickly on 10.04?

How to import my Qt app into Quickly? The goal of this is to package my Qt app using Quickly.
15
votes
1answer
2k views

What is http://extras.ubuntu.com/ repository for?

What will this repository hold? What is policy for it?
12
votes
3answers
5k views

Where do applications typically store data?

I was wondering if there was a standard location for storing user level application data. What I mean by that is stuff like Firefox bookmarks, Skype message history/password, etc. I'm asking because I ...
10
votes
1answer
910 views

How do I make the launcher progress bar work with my application?

Background Research I am attempting to update the progress bar within the Unity launcher for a simple python/Gtk application created using Quickly called test; however, following the instructions in ...
9
votes
2answers
903 views

Make sniqt recognize all tray abilities (or create a working indicator in Qt)

There is this old thread of mine: How do I create a working indicator with Qt/C++? where I was suggested to use the QSystemTray library for making a tray icon in Ubuntu for my application. Sniqt is a ...
9
votes
2answers
8k views

Why can't I import “pygtk” with Python 3.2 from PyDev?

I have installed Eclipse + PyDev + Python 3.2. Now I have two Python interpreters in PyDev: Python 2.7 and Python 3.2. If I try to execute command import pygtk with 2.7 interpreter it works fine, but ...
8
votes
1answer
811 views

What is the equivalent to Android Intent and BroadcastReceiver?

I've played with and written code for Android and I learned the concept of Intents and BroadcastReceivers in Android. They are used to call Apps for specific purposes like making a call or playing ...
6
votes
1answer
9k views

Why can python3 not import gi.repository?

Python2 does not suffer the same problem. greg@greg-precise:~$ python3 Python 3.2.3 (default, May 3 2012, 15:51:42) [GCC 4.6.3] on linux2 Type "help", "copyright", "credits" or "license" for more ...
5
votes
1answer
957 views

Where do I submit applications written for Ubuntu Touch?

I've written an application for Ubuntu Touch using the Ubuntu SDK and have packaged it as a click package. Where do I go to submit it to the App Store to make it available for installation in Ubuntu ...
5
votes
1answer
863 views

Qt5 Qtcreator using a c++function in main.qml to create a file /tmp/

I want to write an app for Ubuntu Touch based on the QtQuick2ApplicationViewer template and the app needs to write to a file (e.g. '/tmp/test.log'). I tested with using a function/macro Q_INVOKABLE: ...
5
votes
2answers
516 views

How can I programatically show/hide my app window with global shortcut key?

I'm writing a Notational Velocity clone for Gnome/Ubuntu using Quickly (PyGI) and I want to allow users to set a global shortcut key that will toggle the visibility of the app window when the app is ...
5
votes
1answer
571 views

Python/GTK3 app crashing on importing “indicate” (python-indicate)

I'm trying to integrate my Python/GTK3 app with Ubuntu's messaging menu and every time I try to import "indicate" (python-indicate) my app crashes, with the following traceback: ...
4
votes
2answers
534 views

How To Use i18n.tr in Ubuntu Touch Projects

I have been using i18n.tr for a while in my Ubuntu-Touch projects. I know what this function is about but I don't know how to add a translation to my project. Where do I have to place my translation ...
4
votes
1answer
3k views

How do I install an app on a device running ubuntu touch?

I've built the sample app for ubuntu touch and I've got a device running the preview. So how do I put the app on the device?