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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6
votes
1answer
4k 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
1answer
2k views

Visual Studio alternative for Ubuntu? [duplicate]

I write programs in Windows casually (apps like notepad, web-browser etc.). But I don't see a good alternative available. I have used Mono but it is not one bit like Visual Studio. I am having a tough ...
2
votes
2answers
101 views

File access outside application directory

I want to know is it possible to access files outside the application directory? e.g. /home/phablet, /media, etc. Okay, so precisely I want to use QDir and QFile to read the folders and the files ...
1
vote
1answer
45 views

Installing development libraries on 14.04

I am trying to build some application for both amd64 and i386 architectures. Host architecture is amd64. So i compile and link with -m32. Compilation is done ok but linker cannot find libraries. ...
2
votes
2answers
270 views

How can I create a debian package for MediaWiki 1.25.1?

I would like to create an easily installable debian package (.deb file) for MediaWiki 1.25.1 as I know from personal experience that for web programming noobs like myself, installing MediaWiki can ...
0
votes
1answer
80 views

'ReferenceError: contents is not defined' with U1db

I'm trying to read information from a database of U1db. I encountered this error 'ReferenceError: contents is not defined' Here's my code: import U1db 1.0 as U1db U1db.Database { ...
0
votes
1answer
179 views

Qt Multimedia doesn't seem to work on Touch

Using Qt package 'Multimedia' to get cameras on the bq phone: QList<QCameraInfo> cameras = QCameraInfo::availableCameras(); cameras.size() always returns zero. Host 14.04, target 14.10, Qt ...
0
votes
1answer
82 views

Invoicing Visual Basic software replacement or web application?

I have a pc that is still fairly powerful but with Windows XP (Pentium 4 3Ghz 4 Gb Ram). It is used by someone who is not computer expert (I would say a really basic user) only for browsing and ...
0
votes
1answer
30 views

Migrating from Microsoft VB6 and SQLite to Linux [duplicate]

I am doing business programming and wish to migrate to Umbuntu. What would be a similar development environment in Umbuntu?
0
votes
0answers
78 views

Ubuntu-sdk webview HTTP handler error

I try to open Instagram site in a webview but I just get a blank screen with some errors. here's the code: import QtQuick 2.0 import Ubuntu.Components 1.1 import Ubuntu.Web 0.2 Page{ WebView { ...
0
votes
0answers
107 views

How to delete the android studio in ubuntu 14.04?

I have installed Android studio in my lappy but I want to delete all the files and Android studio itself from my lappy.Please help me !!! gracious,have a good day!
2
votes
3answers
524 views

How can open-source programs make money? [closed]

I am new to Ubuntu and I am really interested in making software that can work on it and I would like to make profit from these software. How can I make money from making software for Ubuntu if the ...
0
votes
0answers
41 views

How to get the DPI of an ubuntu touch device

I would like to know the DPI of an ubuntu device so for example I could make a ruler app.
0
votes
0answers
124 views

How to make Ubuntu touch qml app fullscreen

I am making an Ubuntu touch app and I am wondering how you can make things such as games fullscreen like PathWind. Which means removing the notification bar. If I have a qml object as my main object, ...
3
votes
1answer
78 views

Where should libraries be located for the development process?

With the SDL libraries for example, one would have to point to the headers at the beginning of their code, like so: #include <SDL/SDL.h> And, when compiling with GCC for example the library ...
0
votes
0answers
127 views

qTox VoIP on the Ubuntu phone?

Has someone assessed how much effort is needed to make qTox VoIP client work on the Ubuntu Touch? Additional dependencies are OpenCV, OpenAL, opus, vpx. Disgusting pre-build scripts. Qt build ...
1
vote
1answer
247 views

Can't run QML app with C++ plugin (cmake) in emulator

I am using Ubuntu 15.04. I created a project QML app with C++ plugin (cmake), and then I want to start it. In desktop it's running fine. When I tried to start it in emulator I got: Framework ...
6
votes
3answers
4k views

How to add vte terminal widget in GTK3?

I'm trying to add vte widget in my application and the examples I've found use .fork_command() to execute a command in that widget. But according to ...
27
votes
1answer
7k 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?
33
votes
5answers
13k views

Is there any API Document Browser like Dash on Ubuntu?

I've seen my friend enjoy using Dash, in which you could look up all kinds of language document, Java, c#, Android, Javascript, JQuery, etc. That makes life much much more easier!! Does Anyone knows ...
1
vote
1answer
371 views

QML Blinking animation

I need a blinking animation for an icon, I did this so far: Icon{ id: bigLike name: "like" color: "white" opacity: 0 ...
0
votes
0answers
25 views

App published only for old Ubuntu versions

I have a (commercial) app in the software center (Robotux). Previously, whenever a new Ubuntu version was released, Canonical made the package available for it. However, this doesn't seem to be the ...
3
votes
2answers
458 views

How to make an application use local shared library instead of the system one

I have qtcreator installed using the qt online installer. It ships which its own version of qt library. The qt library are also installed in the system directories, but those are older. I have ...
5
votes
1answer
763 views
2
votes
2answers
169 views

What's the best approach in migrating currently C# and VB.net (Windows) developed applications?

I would like to start to "translate" my Windows applications to Ubuntu users. These are mainly CRMs or CRM related programs written in VB.net and C#. What would be the best language and IDE for these ...
26
votes
6answers
11k 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.
0
votes
1answer
92 views

Unity8 Development install troubleshooting

First attempt at getting into development with Unity and in a Linux box. I was able to pull down the trunk and (I think) build its dependancies, but it doesn't feel like I've done this right and I ...
0
votes
0answers
27 views

When Ubuntu Software Center review my commercial applications [duplicate]

15 days ago I posted My application on the Ubuntu Software Center and am still waiting for review. Does anyone know when they will be following the approval of the application? My application is ...
31
votes
18answers
30k views

Is there a Visual Studio style tool/IDE?

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 ...
0
votes
1answer
51 views

Is PPA still the only way to publish free open source app for Ubuntu Desktop?

There is a lot of contradicting information about publishing for Desktop. Some sources say that from 14.10 onwards Click packages also for Desktop can be submitted to USC. Other sources say that Click ...
0
votes
0answers
43 views

Workstation Setup on an Active Directory

Excuse my ignorance in matters of System administration. I am a developer trying to integrate development workstations with an Active Directory based network. We have hundreds of Machines running ...
0
votes
1answer
40 views

How to make a custom button provide haptic feedback

I've got a custom round button that is derived from Ubuntu.Components.AbstractButton. Looking at the documentation, it states that: All components deriving from this class support haptic feedback ...
2
votes
4answers
531 views

Tab View HTML 5 App

I am trying to understand the basics of the Ubuntu HTML5 UI. I have used the following sample Code from developer.ubuntu.com <body> <div data-role="mainview"> <header ...
2
votes
1answer
150 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 ...
1
vote
2answers
1k views

How do I include basic image editing in my python application?

I am making an application for the Ubuntu App Showdown and I want to include basic image editing like adding black and white, grey effects etc to the image. But I don't know how to do that. I have ...
1
vote
0answers
88 views

Custom “widgets” in html5 app for Ubuntu Phone

I've reviewed the documentation here and that helps to get started, but leaves me with a question of how to make a reusable custom html widget. For example, if I have a list item which contains a ...
3
votes
1answer
211 views

Remove non-listed click target

I want to write an app for Ubuntu Touch and test it on my Aquaris BQ 4.5 Ubuntu Edition. I failed big time setting it up though and now ended up having no according click target: When I go to the ...
0
votes
1answer
89 views

Will it be possible to develop ubuntu phone apps on ubuntu phones?

I was hoping that the ubuntu phone would bring true convergence of desktop and mobile operating systems and allow me to ditch all my other devices. I'm a developer and I want to create native ...
0
votes
0answers
15 views

OpenID failed Disabled account when loging into myapps.developer.ubuntu.com/

Why is that when i login https://myapps.developer.ubuntu.com/ I have the following message "OpenID failed Disabled account"
2
votes
1answer
244 views

Howto prevent screen idle/dimming in an Ubuntu Phone html5 app

I am developing an Ubuntu Phone html 5 application and I want to prevent the screen from dimming and locking the phone if there are no user interaction in the screen. (The application is showing an ...
2
votes
4answers
2k views

GtkFileChooserButton 'Select Folder' mode returns no path

I have added a GtkFileChooserButton to my app via Glade. It is set to folder selection mode. When the widget is clicked it shows a dropdown list of Nautilus bookmarks with an 'other' option in the ...
1
vote
1answer
93 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 ...
0
votes
1answer
63 views

publish gambas3 programs

I have been using Gambas3 to write some User interfaces, and Ive really enjoyed the simplicity, and speed at which I can write GUIs with. Now i am ready to publish some software. I tried walking ...
1
vote
3answers
147 views

Photo selector API for Ubuntu Touch

I searched all over the web, but I can't find anything that could help me. I am looking for an API to implement a photo selector in my Ubuntu Touch application. I need something like a File Chooser ...
12
votes
3answers
2k views

Where to store user settings for an app?

If I want my application to store a few settings, that persist when an application closes, then where should I store them? I'm not talking anything complicated: two booleans and a string (although in ...
1
vote
1answer
199 views

How to use Apache Cordova API in Ubuntu SDK

I created an HTML5 app in Ubuntu-SDK. Therefore I went to New Project->Ubuntu->HTML5 App. The app is already working but now I wanted to use vibration to give the user a feedback to a certain ...
1
vote
1answer
236 views

QML app with C++ plugin (cmake) subdirectory

I am developing an Ubuntu Phone application "QML app with C++ plugin (cmake)" but I have so many qml files so I want to separate them by functionality ApplicationName CMakeListes.txt .. app ...
15
votes
1answer
298 views

High-level library for Unity Dash?

I've wanted to write a GTK+ version of Unity Dash for some time. I think it could be useful for Xfce, Gnome Flashback, elementaryOS, etc. Before I start doing anything about it, I'd like to know if ...
3
votes
3answers
1k views

Can I develop a 2D game with just QML?

I have a bit of interest in developing for Ubuntu Touch (I have little to no real coding experience also), but my main interest is trying to develop a 2D game. From my understanding, I would either ...
1
vote
2answers
129 views

is there any app for backup/ restore installed apps in ubuntu?

For some reasons, you will need to do an ubuntu fresh install on the same PC/laptop by re-size partitions, or in other PCs/ laptops. Installation is OK, but it spends a lot of time for installing apps ...