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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How to setup GTK environment in Eclipse

I am working on a proect which include some GUI using Glade and GTK. I am using eclipse as my IDE. I am new to GTK and Glade. Can anyone please tell me how to setup the gtk working environment in ...
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2answers
52 views

How does one get the ambient light conditions in Ubuntu Touch?

I am planning to make an app which would switch between Light and Dark theme based on the ambient light conditions. So if it was a dark room, then the app would switch to a dark theme to reduce the ...
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Can't start application in the Emulator

I created in UBUNTU SDK new project ( QML App with C++ plugin ). I can run it as desktop application, but when I want to start it in the emulator I got following error : ...
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9 views

How to install ubuntu 14.04 lts alongside windows 7 on Lenovo ideadpad S510P?

I am trying to install Ubuntu 14.04lts on Lenovo ideapad S510P having windows7. But at the time of ubuntu installation it is not finding existing o.s(windows7) on drive. It is showing empty disk. On ...
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1answer
99 views

Qt Installation requirements: unmet dependencies [duplicate]

im a linux beginner and used google & Co. by installing the requirements ( http://doc.qt.io/qt-5/linux.html ) for Qt: sudo apt-get install build-essential libgl1-mesa-dev i get the following ...
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7 views

How to Record Screen with Webcam? [duplicate]

I was wondering how to record my screen using my webcam what program should I use. If you can tell me the command to install it to. Thanks :)
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1answer
33 views

How to play music when app is not the active app?

I'm working on a music app for Ubuntu Touch I don't know how to keep playing music when my app is in the background or the screen is turned off. Apparently, media-hub is a platform service introduced ...
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25 views

Is it possible to specify default images for scopes?

Is it possible to set a default image for scopes? I've created a couple of scopes for Ubuntu Touch that are basically RSS scopes. But the sites they're reading from don't seem to always provide a ...
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1answer
14 views

How do I animate using javascript and qml?

I've searched the internet and I can't find a simple guide how to animate ui objects in Ubuntu SDK. Can someone please explain the different parts needed and how they work together? Best Regards / ...
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1answer
48 views

Software center crashes on Ubuntu 14.04

After I run the software center in terminal it says: bizara@BlackHole2:~$ software-center 2015-02-24 19:27:53,480 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2015-02-24 19:27:54,828 ...
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Coby Kyros Mid 9742 is compatible with ubuntu for android? [duplicate]

hello im intresting in installing Ubuntu on my Tablet i want to really be part of the Ubuntu family i was wondering if it possible to install Ubuntu for mobiles and Tablet into this Tablet Coby Kyros ...
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15 views

Error while installing QML app on ubuntu device using QT creator

I am getting following errors when try to install an application on my Nexus 4 having Latest Ubuntu Touch OS. :-1: error: lint_maintainer_domain: (EMAIL NEEDS HUMAN REVIEW) email domain too long ...
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1answer
20 views

Missing localization of Ubuntu touch for Slovak language

I would like to translate the Ubuntu touch system into Slovak. How to do this ? Where to start ?
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6 views

Possible to change architecture for published application in myapps afterwards

is it possible to change/add architecture for published applications in https://myapps.developer.ubuntu.com afterwards? Actually: Supported architectures:32-bit x86 But I want to support armhf click ...
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1answer
34 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 ...
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1answer
29 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 ...
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0answers
12 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 ...
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26 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 ...
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1answer
53 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 ...
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0answers
17 views

Xcat extenstion for Ubuntu Juju Charms applications development

Would it be possible to develop a Xcat extension for Ubuntu Juju Charms applications? Here is the link for more info: http://en.wikipedia.org/wiki/XCAT This would make it more easy and fast to ...
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2answers
76 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?
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2answers
159 views

What exactly is an “Ubuntu App”, as made with the Ubuntu SDK?

The Ubuntu SDK appears to be only for creating Ubuntu Apps. What exactly is an "Ubuntu App"? The website is very detailed, but I can't see any description of what is meant by an Ubuntu App. I ...
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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 ...
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1answer
29 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 ...
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1answer
48 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 ...
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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 ...
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423 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... ...
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50 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 ...
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1answer
169 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 ...
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2answers
49 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 ...
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2answers
35 views

Juju support for Google Compute Engine GCE

Is Juju supported for Google Compute Engine on the roadmap? If yes, how?
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0answers
50 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?
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2answers
43 views

Ubuntu.Components for 14.04

I read somewhere that to develop apps using Ubuntu.Components, 14.10 is needed. Is there no workaround to make it work on 14.04? Or is there any older version of Ubuntu.Components for 14.04? If so, ...
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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 ...
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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?
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2answers
86 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 } ...
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21 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. ...
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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 ...
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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 ...
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1answer
78 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: ...
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19 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 ...
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1answer
16 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?
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2answers
313 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 ...
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32 views

Use the design function of Qt Creator when developing Ubuntu apps

I would like to start developing Ubuntu apps with Qt Creator and I have a few queries when making a simple qml qt app. Firstly, is it normal qml and javascript? Can I use all normal qml and ...
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25 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 ...
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1answer
48 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 ...
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1answer
27 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?
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1answer
58 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 ...
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12 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 ...
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1answer
101 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 ...