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
87 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 ...
7
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0answers
153 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 ...
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0answers
29 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
495 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 ...
2
votes
1answer
74 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
votes
1answer
16 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
53 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
50 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 ...
5
votes
2answers
1k views

When should .mo files be generated?

I am creating a python GTK3 program. I'll like to add translation support. I know how to create a .pot and .po file. However in order to make the application available in multiple languages, I need to ...
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
431 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 ...
21
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4answers
7k views

Can I develop ubuntu for phones apps in Python? [duplicate]

Does anyone know if we can develop apps for ubuntu for phones in Python ? PyQT / PySide would seem to support also QML. But can we use them on the phones ?
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0answers
33 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 ...
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, ...
1
vote
0answers
118 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 ...
1
vote
0answers
47 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 ...
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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
votes
1answer
35 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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1answer
25 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: ...
5
votes
1answer
2k views

QML: What is the difference between a Component, Element, Property, Attribute, and Object?

The reason why I ask, is that often languages define the same terms differently, and QML is fairly unique in some regards. A brief explanation or analogy is preferred, where as more extensive and ...
1
vote
1answer
36 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 ...
0
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0answers
13 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 ...
0
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0answers
155 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 ...
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0answers
6 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
16 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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0answers
22 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
22 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 : ...
1
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1answer
67 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 ...
1
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1answer
95 views

How to create and build snappy apps ?

I am very new to Ubuntu application development. I have to develop an application for snappy Ubuntu. Now I am confused about how to do it? So here are my few questions. Which language should I use ...
0
votes
1answer
94 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
11 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: ...
0
votes
1answer
102 views

How to test a javascript scope on a real phone?

I'm developing my first scope, hoping to enter the scopes showdown contest. I've decided to make a javascript scope. I'm having fun with the SDK and following along the javascript scopes tutorial at ...
5
votes
1answer
114 views

How to develop for Ubuntu?

I read on the Ubuntu site about development, and I'm downloading the Ubuntu SDK currently, but I just had some questions that the site didn't answer for me when I was looking around. Is the Ubuntu ...
0
votes
2answers
92 views

JavaScript scope online accounts - OnlineAccountClient error

I'm trying to run a Unity JavaScript scope which uses online accounts on Ubuntu 15.10 on the Unity Scopes Tool, but I get an error when using the OnlineAccountClient class. I followed the Online ...
0
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1answer
34 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? ...
6
votes
1answer
300 views

How do I upload an updated package to my PPA without having Quickly mess it up?

As part of Ubuntu App Showdown I received comments on deb packaging (as maybe all other participants). Those can be easy fixed and I spotted them before, but debian packaging files are managed by ...
0
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1answer
54 views

How to get the name of connected ios phone in Linux using command

How to get the name of connected ios device name in Linux, or c++ programming. basically, I use the Qt in Linux. and I want to get the name of the connected device name. after a searching in google we ...
1
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1answer
83 views

Ubuntu SDK error running scope example

I'm learning to create a Scope for Ubuntu Touch with the Ubuntu SDK (installed from PPA) in Ubuntu 16.04. I created a C++ Scope from template. When I'm trying to run I'm getting this error: ...
2
votes
1answer
97 views

How to solve Bazaar error bzr: ERROR: unknown command “*****”?

I am following this guide to configure bazaar, but I have encountered a small problem, it says to type in the command: bzr launchpad-login subgenius And to replace launchpad-login with your ...
1
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0answers
114 views

QtBluetooth support for Ubuntu Touch

I like to build a qml-based app with bluetooth support. My code works well for the Desktop Kit in the Ubuntu SDK but fails on the BQ Aquaris 4.5 with the error message 'module "QtBluetooth" is not ...
1
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0answers
25 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: ...
0
votes
0answers
6 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 ...
6
votes
1answer
625 views

How to create a PPA for C++ program?

My questions are: c++/gtkmm project created with NetBeans. How to make package to PPA from this? I have created target files structure (*.desktop, iconfile, ui glade files). Binary goes to ...
0
votes
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 ...
1
vote
1answer
359 views

Android Studio - empty project after importing from Github

I have a big problem with android studio. Now I'm working on a project and I have to pair the repository from github to android studio. The connection and the clone of the folder went well. I can't ...
0
votes
1answer
30 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
23 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 ...
8
votes
1answer
543 views

How to submit commercial apps to the Ubuntu Software Center? [duplicate]

Possible Duplicate: What is the process for getting paid apps into the Ubuntu Software Center? Why isn't there a clear description for developers on selling an app on the Ubuntu Software ...
31
votes
3answers
81k 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 ...
1
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3answers
324 views

How to run an action when clicking on an appindicator

I'm looking at writing a simple app indicator and I need it to update it's information whenever it's clicked on to open the menu. Is there any kind of on_click action thing? Let me rephrase it then: ...