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
vote
1answer
15 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 ...
0
votes
1answer
15 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 ...
2
votes
1answer
29 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 ...
0
votes
0answers
41 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
21 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
1answer
48 views

How to keep record of every action and command executed? [on hold]

I there a way to see the terminal code for every action taken? Something like a listener to know what goes on behind the scenes for every action I take. Example: "selected this element, clicked on ...
0
votes
0answers
14 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. ...
21
votes
2answers
47k 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
33 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
96 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
38 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
71 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
43 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 - ...
22
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
26 views

Juju support for Google Compute Engine GCE

Is Juju supported for Google Compute Engine on the roadmap? If yes, how?
2
votes
2answers
39 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 ...
1
vote
1answer
35 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, ...
3
votes
1answer
905 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
15 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
10 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
46 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
47 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
496 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. ...
5
votes
1answer
764 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
207 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
471 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: ...
7
votes
1answer
6k 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
12k 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
30 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
336 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
19 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
6answers
1k 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
29 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
77 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
44 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
27 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
15 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
15 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
201 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?
-1
votes
1answer
156 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 ...
0
votes
0answers
17 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 ...
5
votes
3answers
87 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
795 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
23 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
9 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
151 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
11 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 ...
0
votes
1answer
64 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 ...