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
votes
2answers
421 views

How to uninstall firefox developer edition in ubuntu

How do I completely uninstall Firefox developer edition, I tried by uninstalling from Ubuntu software center, it gets uninstalled but if I re install firefox then again its switching to Firefox ...
3
votes
1answer
39 views

How to cause an Ubuntu Touch device to vibrate?

I'm toying with my first Ubuntu Touch app and am trying to enable the phone's internal, umm, "vibrator." How can I go about doing this? Any pointers on how to do this in either C++, JavaScript, or ...
14
votes
7answers
2k views

Wanting to start development for Ubuntu (and most Linux distributions in general), which is suitable? Python or Vala? [closed]

I'm a computer science graduate, and learned languages like C, C++, C# and Java. Though I have more experience with Java. I want to develop for Linux and I'd prefer to develop for GNOME, I'm confused ...
6
votes
1answer
2k views

How to use accelerators in Gtk?

I need to make an application in Vala, using Gtk, that supports keyboard accelerators that can be changed by the user. First, I add an entry to the global Gtk.AccelMap and then set the accel_path ...
8
votes
2answers
8k views

How to use Sublime Text 2 as Quickly default editor?

I used this answer to change the editor used with quickly and it worked, however now,when I type quickly edit the command line stays on the open and does not allow me to enter other commands as long ...
0
votes
1answer
40 views

I Develop a project on “monodevelop” but stuck in debugging it from .exe file. What should I do?

I have developed a project using monodevelop and saved it. The monodevelop as usual created a .exe file of it for me, But problem with the project is that,"It works perfect, When I start debugging it ...
0
votes
1answer
40 views

Installation failed for API

I'm developing an app for sending OSC messages working through the outlet port 4444 and I am using a C API call Liblo. Project page: http://liblo.sourceforge.net Normal install it by running the ...
0
votes
0answers
18 views

How can a button link to an action in Glade involving a text box?

I am developing a Ubuntu program with Glade and I would like the program to interact with text input from the Text Entry widget when the button widget is pressed. How would I accomplish this? On a ...
4
votes
2answers
4k views

Can I sell my PyQt4-app without having a PyQt license?

I would like to sell a Python application that uses PyQt4. The commercial licenses for Qt PyQt cost thousands of Euros together. Do I need to buy a commercial license? Consider this from a ...
0
votes
0answers
46 views

How to deploy web-applications on Openstack cloud implemented on Ubuntu

We have implemented OpenStack Cloud on Ubuntu server edition 14.04.1. We have few virtual instances of Ubuntu Desktop 14.04 running inside the OpenStack compute component. We would like to deploy a ...
0
votes
1answer
58 views

How to extract from a specific column data and sort them as well? [closed]

Need to script some bash commands for the following: Arrange, print and save to a file after sorting countries with (highest to lowest) population for 1962. Arrange for country Angola population to ...
0
votes
0answers
117 views

How do I create a Debian source package for a JavaFx application for the Ubuntu Software Center?

I submitted a native .deb file to the Ubuntu Software Center, but I got the response below from reviewers: Your application is not in the correct archive format. Please provide us with the Debian ...
0
votes
2answers
96 views

Acrobat XI Pro like pdf reader

How do i install a pdf reader like acrobat XI pro which lets me highlight text, has text recognition and lets me combine and convert pdf from and to other formats?
1
vote
1answer
52 views

copy-mangar having auto-poweroff after completing copying/moving operations?

Many Of my friends don't have Internet connection so often i download their stuffs. so sometime the files are too large 20~25 GB's . Which takes hours to copy :) For my convenient is there any way ...
2
votes
3answers
3k views

How can I create a simple debian package from binary?

I have been researching debian packaging, but I can't seem to figure out how to package a C# mono application made up of a single executable and a few resource files. Can anyone help me figure out? ...
2
votes
1answer
21 views

How to open an item in a MainView so that it fills the whole window?

I'm writing an application consisting of several pages. One page is a bit special, because it should fill up the whole screen. However, I cannot get rid of the page header, despite the fact that this ...
1
vote
1answer
62 views

How can I set the User Agent in a webapp?

I have developed a simple web application which is in the click store and available for users to install on their phone. Some websites require a special UA string in order to render correctly and I'd ...
0
votes
0answers
646 views

Unable To Run Cordova Platform add android on Ubuntu 14.04

I tried running both cordova platform add android and sudo cordova platform add android and I get the below error: sudo cordova platform add android Creating android project... ...
0
votes
0answers
27 views

Cross platform developmemt environment

I want to develop a simple application with GUI that can interact(read/write) with a database (mySql). I would like to run the application in Ubuntu, Windows and android. I am expecting answers ...
0
votes
0answers
23 views

Ubuntu SDK - switching to QML design mode crashes application

I'm using the Ubuntu SDK version 'qtcreator-plugin-ubuntu 3.1.1+15.04.20141212.1-0ubuntu1~0utopic1'. When developing an app containing QML code (App with simple UI) I cannot switch to design mode. ...
22
votes
2answers
52k views

How can I install Qt 5.x on 12.04 LTS?

If you want to develop with QML 2.0 and Qt5, the base packages don't seem to exist in repository for 12.04. What PPA should I add? Is it a binary installer? a compile the toolkit yourself? Those ...
3
votes
2answers
100 views

What is in the future for REVU

Now that there is the Post Release Apps Process in place and there is a big push to get new software into Ubuntu, what are the future plans for REVU? Will there be an application review board for ...
1
vote
0answers
60 views

Questions regarding on-screen keyboard app development

I am volunteering some of my time to help get my favorite keyboard ported to Ubuntu, and I wanted to check with the community to see what approach to use for this kind of app. Are there any special ...
0
votes
1answer
210 views

Difference between Scopes and Apps in Ubuntu touch

In the last couple of years I made several apps for Android (Native and with Cordova) and now I want to develop apps for Ubuntu Touch. I am not yet in the possession of a Ubuntu supported phone (I ...
29
votes
7answers
4k 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 ...
1
vote
0answers
58 views

How do I bundle a python interpreter in my qml app?

How do I bundle a python interpreter in my qml app? I can not use the system's python interpreter due to the nature of Ubuntu’s new Click Packages, and App-Armour. How do I do this?
2
votes
2answers
100 views

Get unique device ID in QML

I need to get a unique ID for the device. I originally thought I'd use the device's imei, but that doesn't seem to return anything: import QtSystemInfo 5.0 DeviceInfo { id: device } ...
0
votes
1answer
50 views

Ubuntu Touch Qt3D 2.0 crashes on start

I've been trying to develop something in QML3D and while my app is running well on desktop, I can't get it working on my tablet (even thought for example Qt3D cylinder from the software center - ...
24
votes
1answer
4k 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?
3
votes
2answers
44 views

Juju support for Google Compute Engine GCE

Is Juju supported for Google Compute Engine on the roadmap? If yes, how?
2
votes
2answers
55 views

Certificate issues when using Landscape python API.

can anyone help me with some certificate issues..? I'm using Landscape, and trying to use the python API, but I get a CA mismatch, but I've downloaded the .pem, and pointed the script to the location ...
3
votes
1answer
1k views

How to create charts in QML?

I'd like to add to my application a page with not only raw figures but also eye friendly charts to display data. Is there a native component or a third-party plugin I could use to create such ...
0
votes
0answers
24 views

Can you use QProcess in a Click Packaged Application?

I am just curious whether this is something AppArmor allows or not? My application works fine on the desktop, but I can't get Standard output or error to even display in my app when I run it from the ...
0
votes
0answers
11 views

What security policy group do I need to give a Click Package to download files?

My app downloads files, ideally to the Music Folder. What security policy groups are needed by app armor to accomplish this?
1
vote
0answers
55 views

Problems with GTK, developing GUI using Glade

I started working on a project where I need to make a simple interface with C language using GTK, then I need to connect that interface with Linux system. I started working with "Glade" which is an ...
2
votes
1answer
62 views

GNU C - Signals never arrive to the handler

I'm working on a university project which needs to be written in GNU C and run on Ubuntu server. My primary OS at home is Ubuntu 14.04 on my PC. The project is about multi thread programming and I ...
0
votes
1answer
507 views

GNU Toolchain required on Ubuntu 13.04 - for offline PC

I am very new to this site. Recently I have successfully installed Ubuntu-13.04-32Bit-Desktop version on my Dell laptop and IBM PC. Earlier I was developing Qt-5.0.2 based applications on Windows 7. ...
6
votes
1answer
823 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 ...
1
vote
0answers
246 views

open text file and dispaly in GTK+2 and display

please tell how text file can be read and the data can be then manipulated in GTK+2 C language. i have tried to compile a code but the problem is that only one line is displayed from the text file ...
0
votes
1answer
528 views

how to compile a C code to call an octave function and make the GUI using GTK+2

i am trying to call a octave function from C code but the problem is that when why run this command in octave mkoctfile --mex addition_GUI.c error occurs addition_GUI.c:1:20: fatal error: gtk/gtk.h: ...
8
votes
1answer
7k views

How to create very very simple GUI application for Ubuntu?

I want to make a simple GUI Application. Can anybody give me source code of a simple GUI Application? So far, I have been competing in Programming Competitions (I have been using C++ for it) and now I ...
1
vote
1answer
13k views

Can Ubuntu provide an IDE for C, C++ programming? [duplicate]

I am a beginner in the field of programming. I have tried to learn C and C++ on a Windows 7 computer using the Turbo C++ compiler, but faced frequent failures and finally my laptop's motherboard ...
2
votes
0answers
60 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 ...
8
votes
1answer
394 views

Howto create a new C++ based Ubuntu touch project in Ubuntu SDK?

There is no option to start a C++ and QML based project in Ubuntu SDK. It only offers to create a QML project with no C++ codes. If I try to add C++ classes to the QML project, I get this error: ...
0
votes
1answer
22 views

Replace secret key placeholder at build time

I'm developing an Ubuntu touch app in QML, and would like to keep an API key reasonably secret (at least I don't want to have to commit it into the VCS). I see that you can define environment ...
11
votes
5answers
2k views

What is Bazaar and how do I use it?

I wanted to get a program, which is installed via bzr. I have successfully installed bzr, but it asks me to authenticate (despite that I`m logged in to Launchpad). Bzr help seems to be oriented ...
0
votes
1answer
47 views

complete list of wowza ModuleBase events? [closed]

does anybody knows where I can find full list of events supported by Wowza ModuleBase class !? ex. onSessionCreate, onRTPSessionCreate, onAppStart, etc.. edit: I just realised that this question ...
2
votes
1answer
84 views

U1DB problems with apparmor

I'm having problem with u1db and apparmor. The application works fine, but when it is packaged apparmor does not allow the app to save data into $HOME/.local/share/.. so I can't actually save my ...
2
votes
1answer
103 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: ...
0
votes
1answer
57 views

Why was my app rejected with “(REJECT) reserved policy group 'debug': not for production use”?

I uploaded my app to the store but received this error message: found unexpected Exec with architecture 'all': ./qtcdevicedebughelper.py (REJECT) reserved policy group 'debug': not for production ...