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Questions tagged [application-development]

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.

110
votes
6answers
16k views

How to get my software into Ubuntu?

As a developer of free software, I want to get my application into Ubuntu. Should I provide a source tarball and ask for packaging? Or should I create a package myself? Should I target Ubuntu ...
191
votes
6answers
125k views

When installing user applications, where do “best practices” suggest they be located?

Occasionally I install applications manually, rather than using apt or another package manager. What location (/usr/, /usr/local/, /opt/, /home/, etc.) is suggested by "best practices" for the ...
76
votes
7answers
64k views

What is the best way to develop apps for Ubuntu? [closed]

I want to write applications for Ubuntu. I do not know much about programming but I want develop for Ubuntu. I am trying to learn Python right now. What do you think is the best way to develop apps ...
40
votes
18answers
54k views

Is there a Visual Studio style tool/IDE? [duplicate]

I have been developing in the windows space with Visual Studio for a while now with work, but I have also been using Ubuntu for a while and am keen to get into some software development for linux. I ...
20
votes
2answers
9k views

How can I get started with developing apps for Ubuntu Touch? [closed]

I am interested in trying the new Ubuntu for phones OS development. (I am not an Ubuntu developer, I am new to Ubuntu. Impressed by the Ubuntu Touch preview, I got interested in learning how to ...
23
votes
3answers
6k views

Is it possible to use Python with the Ubuntu SDK?

David Planella wrote in his answer to a question I posted that: ...the recommended way to develop apps for Ubuntu is the Ubuntu SDK. So I installed it, but looks like the supported programming ...
19
votes
0answers
2k views

How do I start developing a lens for Unity? [duplicate]

I would like to know how to create one of those lenses for unity. I know how to program. but I don't know where to start. Are there certain libraries I should use or docs that I should read? Are there ...
31
votes
4answers
18k views

How to start an app with “Always On Top” set?

There are a couple of applications that I find myself marking as "Always on Top" every time I use them, so I wonder if there is a way to automatically set them as so, whatever way I start them (menu, ...
36
votes
2answers
15k views

When to use gconf vs dconf?

Both gconf and dconf editors are available. Given the change to dconf should we still be using gconf at all? Do changes in gconf actually do anything when running 11.10?
33
votes
4answers
20k views

How do I get started creating an Ubuntu Desktop App?

I want to create an Ubuntu desktop app, specifically to replace Gwibber. I can code in Java, Python and a few other technologies. Adobe Flex would have been an option until Adobe decided to suck some ...
10
votes
2answers
8k views

How do I start developing applications for Ubuntu on mobile devices?

I've come away a little confused on how to develop mobile apps for Ubuntu. First of all, do developers need the Ubuntu operating system to develop for Ubuntu? Is it possible to develop Ubuntu apps ...
8
votes
1answer
397 views

Create a quickly app with build dependencies

I am creating a Quickly app in Ubuntu that depends on Python Twisted, which is available in the package python-twisted. How should I add python twisted as a dependency so that it will be installed ...
16
votes
4answers
10k views

Run system commands from QML App

I want to run a system command from inside my application. It's suppose to run a command on a remote server using SSH. But that's not really the point. The point is that I don't know how to run any ...
10
votes
1answer
2k views

How to create a new Quickly application template?

Cannot find the answer elsewhere, I'm asking for a documentation of the process to create a new template for quickly. I'm interested in writing a pyside (python + qt4) template like the pygtk one. ...
29
votes
1answer
10k views

What are Click packages?

I noticed that Ubuntu SDK recently had some updates and it installed a program named "Click". I would like to know what they are and how to use them. Also, would they make Debian packaging easier?
7
votes
1answer
281 views

How to troubleshoot Quickly packaging failures

I have created a Quickly app and I'm trying to create a package for distributing it through the Software Center. However, whenever I try one of the Quickly packaging commands (package, share, release ...
15
votes
0answers
663 views

How do I put a package into the Ubuntu repositories? [duplicate]

Possible Duplicate: How to get my software into Ubuntu? I've created a Python application for Ubuntu. How do I package it and submit it for possible inclusion in the universe repository?
29
votes
3answers
30k views

How can I get a java apps to use the GTK+ theme?

Is there a way to get java apps to use my gtk theme?
8
votes
4answers
3k views

How to create a scope?

I'd like to create a custom scope that searches and returns results from an online source for personal use. Is this possible? And if so, how?
27
votes
4answers
1k views

How can I publish my project code online so someone can help me with it?

My local project has some code that is not working, and I'd like to show it to someone to have a look at and possibly give me a hand with it. This isn't a short snippet or a single file; there are ...
14
votes
1answer
651 views

How do I add a slider to an AppIndicator?

I'm trying to add a slider to an AppIndicator similar to what the Sound Menu has. I've looked trough the code of the Sound Menu and found that I should be using libido-0.1 for that. Here's what I have ...
7
votes
3answers
7k views

Can't install qt-components-ubuntu because I'm using full release of QT 5.0.0

It appears that since I didn't install the beta1 version of QT5 from the ppa, I'm unable to use the Ubuntu components package. I have the released version QT5 already and not interested in installing ...
3
votes
2answers
672 views

How do I simply run an ubuntu touch app from the terminal?

I've got a qml file and I just want to ssh to the phone and do qmlscene myfile.qml Is it possible without doing all that stuff with SDK and packages? Just vim and some simple commands that can fit ...
25
votes
3answers
10k views

How to create Unity indicators?

I'm interested in Unity indicators and wonder if there is any tutorial on how to program them. I can use the sources of the existing ones as last resort, but I'd prefer a more friendly approach ...
19
votes
2answers
13k views

How to read dbus-monitor output?

I'm playing around with dbus-monitor to try and understand how dbus is working in Ubuntu environment. I have several questions in this regard: Could you please let me know how to read the following ...
18
votes
4answers
4k views

Developer resources for desktop apps?

On developer.ubuntu.com most resources seems to be targeted to Ubuntu touch. If I wanted to write an Ubuntu desktop application, where can I start? Is the Ubuntu SDK for the desktop too? I read that ...
15
votes
2answers
15k views

How do I view or install Ubuntu Touch apps?

Lots of people have started developing Ubuntu Touch apps for the Ubuntu App Showdown and just in general, and have published them in the Click App Store. What is the Click App Store, and how do I ...
12
votes
1answer
944 views

Is there any web API for Software Center available?

I wonder if there is an API available for using contents from the Ubuntu Software Center on my webpage. I know The Ubuntu Apps Directory website contains an almost complete database of applications ...
13
votes
2answers
320 views

How can a free, proprietary application be submitted to the Software Center?

I'd like to suggest to the developers of simfy that their desktop application be submitted to the Software Center. How should they go about doing this?
34
votes
7answers
7k views

How do I develop an Ubuntu application in HTML and JS?

I am developing an app and I think HTML and JavaScript are better for the future, but I cannot find any tutorials (I need the app to use the system theme). Are there bindings for Unity, message menu ...
36
votes
8answers
20k views

How do I develop .NET apps on Ubuntu?

at college we use Microsoft .NET for developing applications. I recently switched to Ubuntu and would like to know similar tools for making apps on/for ubuntu.
24
votes
3answers
4k views

How to add support for the global menu to a python non-gtk, non-qt app?

I'm looking for good documentation (an example, tutorial, or guide) on how to add global menu support to a non-gtk, non-qt application. (In gtk it works 'magically' for the main menu...). The ...
16
votes
7answers
28k views

What 2D/3D engines and game SDKs are available? [closed]

What 2D/3D engines and game development SDKs are available that run natively on Ubuntu? Please limit one engine/sdk per answer - and include why you enjoy the engine/sdk.
23
votes
4answers
5k views

How to program a status icon that will display in Ubuntu as well as in other distributions?

The application in question does some action (here connecting audio to network streams) and runs minimized if these actions were successful. Therefore a status icon is needed to display the state of ...
28
votes
3answers
37k views

Installing gtk development environment

Not new to Ubuntu or programming but I am new to programming in C and gtk. Have been using Quickly for the odd program. I want to play around with C and gtk. What gtk packages do I need to install to ...
22
votes
2answers
3k views

What is the black header widget in some programs?

In some of the ubuntu programs (ubuntu control panel, system settings), but not e.g. in banshee, the top part of the window contains elements in dark tone (with the Ambience theme). But I cant find a ...
6
votes
1answer
1k views

How do I submit .jar file to the ubuntu software center

I am writing an app using JAVA Swing for all platforms. After that I want to add this app to Ubuntu Software Center for free Is it possible? My app is just one *.jar file, its helping to play card ...
11
votes
2answers
2k views

Is PyGTK still relevant?

I'm new to Linux but not to app development. I come from a RealBasic on a Mac background. I've accepted that I need to learn a new language to develop for Linux (since RB won't run on 64 bit distros ...
11
votes
2answers
2k views

Quickly template for PyQt?

Because I like Qt and Python, is there a Quickly template for PyQt similar to the PyGTK one?
4
votes
2answers
3k views

Saving user settings in QML/JS

I'm working on a small game and i'd like to know how can i write/read a user settings file in ubuntu touch?
15
votes
4answers
9k views

How can I theme my Qt app to resemble one written in Gtk?

Mark Shuttleworth recently blogged about the decision to include the Qt libraries in the 11.10 release, with a followup from Jono Bacon. The thing that puts me off Qt apps is that they don't blend in ...
4
votes
3answers
9k views

C# on Ubuntu 12.04

Is C# a good choice for Ubuntu programming? For example, Unity, or applications that will run on Ubuntu? Am I doing good wanting to learn C# when I'm determined to stick with Ubuntu and develop on it ...
14
votes
1answer
518 views

How do I apply the fixes suggested from the App Review Board to my app?

I submitted my app to the Ubuntu Software Centre, and it just got reviewed by the Ubuntu App Review Board (ARB). I got an e-mail suggesting some fixes, and I'm not sure about the next steps I should ...
7
votes
2answers
2k views

What GTK widget is this?

Lately, I've seen the widget below appear in GTK applications. I can't find it in Glade. What is it?
6
votes
1answer
717 views

How to insert Video element in my Ubuntu application?

I saw on some sites that you can insert videos with the Video element by importing Qt 4.7 and QtMultimediaKit 1.1 . But I have an error by compiling the project (it's a tabbed touch UI project): (...
5
votes
1answer
480 views

Where does Quickly get the PPA name from?

I am trying to publish an app with Quickly: $ quickly share Get Launchpad Settings Launchpad connection is ok ppa:umpirsky:ppa does not exist. Please create it on launchpad if you want to push a ...
3
votes
2answers
388 views

Quickly packaging errors

I'm having some trouble packaging my Quickly (Python/GTK) app. Creating and packaging a new app (created using quickly create test and cd test; quickly package) works just fine, but the actual app ...
5
votes
3answers
4k views

Changing Python default in 12.04 LTS

I have downloaded and installed python 3.2.3 for Ubuntu/Debian. Also IDLE IDE for 3.2.3. If I execute IDLE for 3.2.3 explicitely, 3.2.3 runs under IDLE and all is well. But if I go to a terminal ...
2
votes
1answer
234 views

Installing a program on a ubuntu touch phone

I searched on the website but didn't found an answer. I heard a lot that developing an application with C, C++ or anything else. Is it really possible ? What I mean : Imagine I develop a program in ...
59
votes
1answer
41k 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 ...