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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1answer
81 views

Are paid and proprietary apps being discontinued?

Previously developers could submit paid and proprietary apps to Ubuntu Software Centre via MyApps section in developer.ubuntu.com. However, the new software centre in Ubuntu 16.04 does not support ...
2
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1answer
87 views

Can I develop code on my bq Ubuntu tablet and compile and run it on the tablet?

Is there any reason I cannot use my bq Ubuntu tablet in desktop mode to write, compile and run code for Ubuntu development?
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1answer
10 views

Non-existent property tools in Page

I have a code which used to work but after I upgraded to (K)ubuntu 16.04 and the latest Ubuntu-sdk, it doesn't work anymore. I get error Cannot assign to non-existent property "tools". This is my code ...
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0answers
46 views

Ubuntu Xenial: perf doesn't demangle C++ symbols

Linux perf-tools don't seem to work as expected on Ubuntu (16.04). C++ symbols don't get unmangled, I only see garbled stuff like "_afki34334ldfjkdasf_dfkj". Note that I have compiled the program and ...
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0answers
26 views

Which programming language should I learn to create desktop application in Ubuntu? [duplicate]

I am an Ubuntu enthusiast. So I want to create my own desktop application so which programming language should I learn and which ide to use?
3
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1answer
96 views

Where are localized interface names of launcher items defined if they are not in the .desktop file?

Naming of a launcher - In most cases... The interface -name of a launcher, in most cases, is defined in the (first) line, starting with: Name= of its corresponding .desktop file: - Localized ...
2
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0answers
32 views

Ubuntu phone - how to store data when writing HTML5 app - preferred way

I started creating a simple organizing app for myself, and hit a brick fairly quickly. Wanted to have an XML list of things that would be read and updated by a HTML form. Now I came through ...
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0answers
21 views

Execution of Python Script from C++ project in Ubuntu SDK

I have a python script by name random.py which needs to be ran from code which is written in C++ language in Ubuntu SDK. I tried various methods like using process and process functions but in vain.
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1answer
89 views

Ubuntu's best utilities for programmers [closed]

I have been working in Windows for many years, now I'm interested in using a Linux OS, so I am starting with Ubuntu. Can any experts recommend some apps that will help in programming? My programming ...
4
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1answer
59 views

How to package a browser plugin and a gui app in a snap package

My app is a gui app (qt) and a browser plugin. The plugin is used only for firefox. When the user clicks a button I want to open my gui-app. I would like to use a snap package to do this, but I can ...
3
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1answer
65 views

How can I use sqlite3 in my Ubuntu Phone app? (C++ backend)

I want to create an app, which has a C++ backend and uses sqlite3. I can connect to an Database in memory using the following code:m_db = QSqlDatabase::addDatabase("QSQLITE"); m_db.setDatabaseName(":...
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1answer
17 views

investigation of librsvg-dev

While testing the node-librsvg, which provides a node interface to convert svg to png images using librsvg-dev, I realized that it works really well on Ubuntu 12 , but some images can not be converted ...
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0answers
93 views

Developing Web App in Cordova for Windows and build .click package for Ubuntu Touch

I just realized a Web App using Cordova for Windows. Cordova permit me to build an installation package for "Windows Phone" and "Android" devices. I know that to create a .click package the ...
1
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1answer
117 views

Why is the Ubuntu-for-Windows default shell a root shell? [closed]

From day one of using Linux we are told that running as root is extremely dangerous. Here we are though on day one of introducing Linux to a wider audience by enabling it in Windows 10 we provide the ...
0
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1answer
63 views

I need Ubuntu.Components 1.3 for Ubuntu 14.04

Newbie here. Been an IAR baremetal embedded guy for years. Ubuntu transition is painful. I've installed Ubuntu 14.04. I've installed SDK and Qt Creator and I'm trying to build...anything. ...
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0answers
37 views

Ubuntu Gnome App Store

Now that Ubuntu 16.04 is using Gnome App store are we still able to submit our own apps the same way as before or do we need to submit our apps elsewhere? Many Thanks
1
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1answer
27 views

What directory should Ubuntu touch apps write to

What directory should Ubuntu touch apps write to. Is there a Qt or QML method for getting this directory?
2
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1answer
84 views

Get the sum of all values in a specific column of a ListView in QML [closed]

How have the sum of a column in a list view? By example the total cost : ListModel { id: fruitModel ListElement { ...
0
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1answer
20 views

language learning on ubuntu tablet

I have a linux computer, but i use an android tablet. On my tablet i have a series of apps for learning french and spanish. My favorites are the "fun easy learn" apps which lets you memorize words. ...
0
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3answers
86 views

New to Ubuntu + Ruby Development + selenium

I am an automation engineer, I've been using java bindings with selenium web-driver on a windows machine for development of automated tests, however, I am switching to Ruby for developing automated ...
1
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0answers
80 views

QML unit testing: running qmltestrunner

I'm on ubuntu 14.04. I installed the Ubuntu SDK IDE. Running a QML App on my Ubuntu phone via the IDE works fine. I'm following this tutorial on testing https://developer.ubuntu.com/en/apps/qml/...
5
votes
1answer
171 views

How are Launchpad teams usually formed?

Over time, I answered a number of questions here. Many times, these questions were quite (user) specific and answers were created, writing in an improvising way. In some occasions however, things were ...
1
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1answer
24 views

Simplest way to check “is app running for the first time”

I am writing an app for the Ubuntu Phone and I want to store a boolean which represents if the App is running for the first time or has it run before. Personally I don't really want to create a full ...
3
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0answers
548 views

Ubuntu Core Snappy on Raspberry Pi 3

Has anyone successfully created an image of Snappy for RPi3? Any SD cards that I've loaded with the Snappy for RPi images, that I've been able to find, don't work with the RPi3, only on my RPi2. I ...
0
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1answer
32 views

How to build an java applet?

The funny thing is, this code was applied with success on other people's computers after they made the byte code and html file. But my java IDE is running on Android and the compiler threw 17 errors, ...
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0answers
44 views

Ubuntu App CMake Build error 255

I have an app in the Ubuntu store called Body Status. You can find the source code on Github. When I open the source code in the Ubuntu SDK to update something and then build it again, I get this ...
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0answers
53 views

How to control system volume with C++/QML?

Helo, I want to develop an app. It should control the system volume by day time. I have two questions: How to change system volume in C++/QML? How can I run my app as a service that will ...
1
vote
1answer
171 views

Ubuntu SDK Error 'could not find or load the Qt platform plugin “xcb”.'

I am trying to write my first ubuntu app using the Ubuntu SDK but keep running into an error. This error turns up both with QML and HTML5 apps. I am trying this just on the template for both project ...
0
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0answers
26 views

My app is not find in ubuntu software center?

Just now I published my app in ubuntu software center and the status got changed from "Ready To Publish" to "Published" and also i recieved mail for succesfully published my app. But when I searched ...
0
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1answer
27 views

Ubuntu SDK IDE quits with Segmentation fault when running example code

I installed Ubuntu SDK from ppa:ubuntu-sdk-team/ppa on Ubuntu 14.04 LTS 64bit. Then I created device kit ubuntu-sdk-15.04 armhf. When I try to run with CTRL + R example below from: https://developer....
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0answers
14 views

Scope department not triggering refresh on click

I've added a department with subdepartments to my scope. It filters fine if I manually pull to refresh after selecting the filter, but it does not trigger by default on the selection. I wasn't sure ...
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0answers
160 views

What determines font color of “Pull to refresh” text

As (barely) seen in the my scope screenshot, the "Pull to refresh" font color needs to be adjusted. I'd assume it would be done in the data/app.ini.in file under [Appearance], but I've been ...
1
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1answer
37 views

How to pass phone number to phone application from scope

I'd like to be able to pass a phone number to the phone application from within a preview of a scope. Is that possible? Is it done with action widgets? Is there an example of this somewhere in ...
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0answers
8 views

ubuntu touch using remote debugger in chrome

I have build cordova app in ubuntu touch but as i want to debug it using chrome console. I want to that is there error in loading scripts or how i can read console.log errors etc.
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0answers
20 views

ubuntu touch screen-shot api corodva/html/qml

I want to capture screen via ubuntu touch app. Is there any api like camera or other apis which can help capture screen because usually we take screen shot by holding volume up button. It can be any ...
0
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1answer
46 views

Error During building of a trial Ubuntu App using Cordova

I am trying to develop html5 apps using cordova on my ubuntu desktop 15.10 for my phone which is running 15.04, following the configuration suggested here. However, on the build step in the above ...
0
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0answers
24 views

Cordova build for all architectures

I build an app for ubuntu touch with Cordova and I just realise it's only available for armhf arch. There are other apps on the store available for all architectures. I try to follow this guide : ...
0
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0answers
34 views

FR : Sharing textures between apps like - IOSurface

I want to switch to Linux for my professional projects with real-time vidéo, but the biggest obstacle on the way is the lack of a technology like Syphon on OSX or Spout on Windows. The benefit of ...
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0answers
12 views

rythmbox player needs a windows program installed?

samba: Depends: heimdal-hdb-api-8 but it is a virtual package Depends: samba-common (= 2:4.1.6+dfsg-1ubuntu2) but 2:4.1.6+dfsg-1ubuntu2.14.04.10 is to be installed Depends: samba-common-...
0
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1answer
38 views

ubuntu sdk ,run default app on ubuntu phone

I'm trying to run a default qml application on my phone. But it's not working :/ developer mode is enabled. the first error includes this link: error1 Where have I to enter this description? ...
1
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1answer
98 views

Problem with AngularJS and jQuery libraries in Ubuntu SDK - HTML 5 App

I'm trying to explore the "Ubuntu SDK" and just to test I made a "HTML 5 App". The app need to use angular library (such as: angular.min.js), jQuery library, and angular module for routing (angular-...
1
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0answers
27 views

Proximity sensor in QML - Ubuntu phone

I'm creating application for Ubuntu phone BQ Aquaris E4.5. I want to use proximity sensor to dimming screen, but I can't make it work. I found example how to use it here: http://doc.qt.io/qt-5/...
0
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0answers
8 views

nm.d already present while launching multiple lxc application containers. Not able to launch more than 1 container

I want to launch lxc application containers on ubuntu. Am able to launch one container with an application. As am trying to launch second container with same application its giving nm.d daemon already ...
0
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1answer
12 views

New browser not packaging

I am trying to use 'quickly package' to package a new browser that I have put together as a 'trial run' in my attempt to begin learning how to use python for programming... However, even though I have ...
0
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1answer
34 views

Issues with CurrencyConverter qml tutorial

I'm trying to follow the tutorial at https://developer.ubuntu.com/en/apps/qml/tutorials/building-your-first-qml-app/ which states, "Select the Projects > Ubuntu > App with Simple UI template and click ...
0
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0answers
26 views

How to Use Gambas?

I recently shifted to Linux and installed Gambas for creating a project , but the navigate command use to code in visual Basic is missing in visual basic it looks something like this WebView1....
0
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0answers
98 views

Need root access for some actions in ubuntu phone app

I am trying to develop an ubuntu phone app that does some things that are not allowed by app armor. If I connect to my phone by adb shell I can do this things without problems and without root. My ...
0
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1answer
101 views

Ubuntu SDK emulator starts up but the Devices tab says “The device is currently booting…”

I'm trying to setup an Ubuntu emulated device with a click package. But even after the emulator starts up the devices tab show that the device is booting. Pressing the refresh button does not help ...
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0answers
65 views

How to install a python script as an application

I have been trying to create a deb package for my python script following these steps. My myscript.py contains a simple frame. #!/usr/bin/env python import wx app = wx.App(False) frame = wx.Frame(...
3
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0answers
157 views

could not find or load the Qt platform plugin “xcb” in ubuntu-sdk

Command: $ ubuntu-html5-app-launcher --www=www Error: This application failed to start because it could not find or load the Qt platform plugin "xcb". Reinstalling the application may fix ...