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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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
78 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
46 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
30 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
5k 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
150 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
63 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
134 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
133 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
69 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
4k 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
29 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
117 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
1k 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
38 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. ...
26
votes
2answers
59k 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
64 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
327 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
83 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
168 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
55 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 - ...
2
votes
2answers
73 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 ...
0
votes
0answers
16 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
71 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
78 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
522 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
900 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 ...
0
votes
1answer
627 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: ...
10
votes
1answer
9k 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
14k 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 ...
10
votes
1answer
452 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
31 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 ...
12
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
66 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
97 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
180 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
83 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 ...
0
votes
1answer
27 views

How do I add a Device Kit to an existing project

I am writing a QML Ubuntu Application and unfortunately forgot to check the boxes for the different Device Kits when I created the Project. How do I get those Device Kits to show up at the run menu?
0
votes
0answers
42 views

Ubuntu QML App UI problems

I need some help... I am currently building a new QML Ubuntu App and I am struggeling with the UI.. The App sends a request to an external server, gets some JSON back and appends that to a ...
1
vote
1answer
378 views

Read lines from a text file in QML Qt/Quick

I need open a text file and read it's contents line by line and store each lines in a string list in qt quick 2.2. Can every one help me?
5
votes
3answers
212 views

How to add some padding between a ListView and its footer?

Consider the following QML snippet: ListView { //... footer: Text { text: "Sample Text" } } This will display the text "Sample Text" directly at the bottom of the ListView. ...
14
votes
2answers
917 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 ...
0
votes
0answers
28 views

How to create a source tarball for a java application built by ant?

I've written an application in Java and would like to package it for Ubuntu and upload it to my PPA. I've already read through the documentation and set up my environment, but I don't completely ...
0
votes
1answer
86 views

What does policy_version_is_highest mean?

My app was just reviewed and the feedback comments mentioned "policy_version_is_highest". What does this mean?
8
votes
1answer
196 views

How to deploy an Ubuntu touch application for other GNU/Linux distributions?

My situation: I have created an Ubuntu touch application using Ubuntu SDK, in QML & C++. The application uses Ubuntu UI Toolkit (Ubuntu.Components 0.1) I want the application to run in other ...
0
votes
0answers
16 views

“Search your computer” widget get overlay by other views?

There are times that every view/window that is opened is overlaying the search widget that you open with "Super" key. No matter what window you open or set true/false for "Always on top". This is very ...
1
vote
1answer
229 views

Ubuntu.Components version 1.1 is not installed

Anyone knows why I'm getting this error? I do have Ubuntu Components in /usr/lib/x86_64-linux-gnu/qt5/qml I'm on Ubuntu 14.04. Installed the SDK through the PPA. Last time I installed SDK from the ...