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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2
votes
2answers
197 views

How to detect whether an app is running on a mobile device or on the desktop

I'm using the Ubuntu SDK to develop a QML app that runs both on the desktop and on mobile devices. Depending on where it's running on the desktop or on a device, certain behaviours should be ...
4
votes
2answers
558 views

How to create a dialog and set title and text dynamically

Looking at the Dialog component example in the Ubuntu SDK documentation, it looks as if dialogs are intended to be defined as static components with fixed title and text. Or at least I cannot figure ...
0
votes
1answer
38 views

is there any way to run the application on internet? [closed]

can you provide any links or guideline steps to execute the application (for example to run currency converter program) on internet directly without installation of any software. Like using online ...
5
votes
2answers
612 views

Are Ubuntu Phone apps compatible across different devices? And if yes, how?

I know that Android apps are developed in Java because running all applications in a virtual machine grants less compatibility issues. IOS instead uses objective-C because it is developed to run just ...
0
votes
1answer
35 views

Ubuntu provides Certificates?

I want to know if Ubuntu provides certificates to commercial applications? Example: "Appname Certified by Ubuntu"
0
votes
0answers
20 views

Whats a good way to learn how to make apps? [duplicate]

im fairly new to the Ubuntu distro, i was just wondering how to make apps. I would really like to expand my knowledge in this area. Any info will help, thank you!
12
votes
1answer
325 views

How to take ownership over an existing Ubuntu Software Center app?

My name is Michael Tunnell and I am one of the project members of the download manager, uGet. uGet has been out of date in Ubuntu for over a YEAR and we are trying to fix that. (You can verify my ...
3
votes
1answer
152 views

Why the $2.99 minimum price for apps

According to http://developer.ubuntu.com/publish/ Apps can only be published at a $2.99 minimum price, which seems to include the ubuntu touch apps. 99% of the apps I have purchased on android are ...
4
votes
1answer
449 views

Does Ubuntu Phone APIs include Qt Mobility?

I'm currently developping an application for Meego/Harmattan. This app uses Qt Mobility API, and can easily be ported to SailfishOS. I would like to know if this API is also supported in Ubuntu Phone ...
1
vote
1answer
224 views

Will Ubuntu QML apps be cross-platform?

I am creating a voice-chat app for Ubuntu using the Ubuntu SDK; will it work on windows and mac in the future? If not, I will be switching from using the SDK to plain Qt or GTK.
7
votes
2answers
2k views

How to pass the image preview from the QML Camera component to a C++ plugin

I'm writing an Ubuntu Touch QML app that captures and processes images from a camera device. The processing is done by a C++ plugin to which I'm passing the URL of the image. I can successfully save ...
0
votes
1answer
388 views

Can I use the Ubuntu SDK Preview in Linux Mint?

Can I use Linux Mint to develop applications for Ubuntu Touch with the Ubuntu SDK preview?
2
votes
1answer
155 views

Get sensor values Ubuntu Touch

I'm new to Ubuntu applications and I'm trying to make an application for Ubuntu Touch that reads the values from the sensors (Accelerometer, Gyroscope,...) but I don't know where to begin. Which ...
3
votes
1answer
121 views

How can I center an ActivityIndicator within the screen?

How can I center an ActivityIndicator within the screen? My current code is: Column { Row { ActivityIndicator { anchors.leftMargin: units.gu(10) running: true ...
3
votes
1answer
2k views

How to emit onDropped in QML drag n drop example?

In the qml documentation there is a drag'n'drop example: import QtQuick 2.0 Item { width: 200; height: 200 DropArea { x: 75; y: 75 width: 50; height: 50 onDropped: ...
0
votes
1answer
218 views

How to add Password encryption

I have an encryption app that just encrypts a string and then can decrypt also.. But how can I make it so the user sets a password and the other person has to put in that password to decrypt the ...
2
votes
1answer
201 views

How to update my Ubuntu Software Center App

Ok so I programmed an app (GibberEng) and submitted it to the app store and it got published and all that. How do I make an update to that app. So that all the 80 people who have downloaded it receive ...
0
votes
1answer
127 views

Ubuntu on Tablets: Installing Software without the Store?

When Ubuntu is run on a tablet, will it be possible to install software directly, i.e. without going through your store or will installation of third party be locked down to the store like with Apples ...
7
votes
1answer
151 views

Are the “Ubuntu Core Apps” also intended for the desktop?

I have been reading a lot about the Ubuntu Touch Core Apps initiative lately. Given Ubuntu's device factor convergence plans and the cross-platform Qt/QML foundation of the Ubuntu SDK, is it the ...
3
votes
2answers
1k views

How do I give root privileges to an app?

I tried to submit an app to the Ubuntu Software Centre but it was rejected because you needed to put in the admin password to use it. I need to grant root privileges to the app for it to function so I ...
0
votes
1answer
182 views

Problem with Quickly text input field

The Problem I am using Quickly to try the mybrowser demo from the Ubuntu Website. Everything goes well until I add a simple text field (for URL entry) in Glade, then, no warnings are issued but the ...
2
votes
1answer
28 views

How to use Ubuntu App Developer's Key system?

Okay so I made a package and submitted it to Ubuntu App Developer. It does not install any files directly, but does depend on Qt framework. The License Key system Ubuntu provides says it will look for ...
6
votes
1answer
686 views

Where on the filesytem could a user find the Unity scope files?

I am wanting to find the Unity scope folder so that I can study how the scopes are set up and programmed. Where on the filesytem could I find the Unity scope files?
2
votes
1answer
734 views

Convertion of tiff image in Python script - OCR using tesseract

I want to convert a tiff image file to text document. My code perfectly as I expected to convert tiff images with usual font but its not working for french script font . My tiff image file contains ...
1
vote
1answer
388 views

How to launch application not from console in Ubuntu Touch

I'm developing application with Ubuntu Touch. I use QML and C++ plugin. I can launch the application from console using "qmlscene -I ./imports myApp.qml", but when I add new desktop file, wherein I ...
3
votes
1answer
119 views

Unity .desktop Actions internationalization and localization?

How can we translate Desktop Action Names? Is it supported by quickly, launchpad?
0
votes
1answer
142 views

Changes to the KDE library prevent compiz 0.9.7.12 from compiling

I have been been following a tutorial on modifying existing compiz plugins, but run into the following error when compiling compiz-0.9.7.12: In file included from ...
0
votes
1answer
319 views

Can I create an app for the Ubuntu Touch platform using PyQt?

Will I be able to create an app for the Ubuntu Touch platform targeted at phones and tablets using PyQt? What are the options for writing apps for Ubuntu Touch using Python? Thanks.
2
votes
1answer
4k views

Easiest way to add a GUI to a Python code?

I'm planning out a Raspberry Pi project, and I want to make it very easy to use. My dad will be using it, and I'd like for it to be usable without having to interact with the terminal. I just want a ...
2
votes
1answer
336 views

Open ports for development purposes

I'm doing some Java ME Development in my brand-new Ubuntu laptop, coming from a now replaced Windows Vista one. What I'm trying to do is run a Mobile Simulator that acts as an HTTP Server -receives ...
2
votes
1answer
251 views

How to set quickly to use python3 when creating new applications in Ubuntu 12.04

I'm just starting to learn python and use the standard set of tools in ubuntu 12.04 (quickly, glade, gedit). When I do quickly create ubuntu-application foo the application uses python 2.7 by ...
1
vote
2answers
923 views

Gtk.SelectionMode.MULTIPLE allows selection of only one row in Gtk.TreeView

I'm developing an application using Quickly. I have a Gtk.TreeView with a Gtk.ListStore as its model. The selection mode of the Gtk.SelectionMode is set to Gtk.SelectionMode.MULTIPLE. The problem is ...
1
vote
1answer
99 views

Common SDK for Ubuntu Touch an “Classic”?

I started to develop Apps for Ubuntu using "quickly". Nice toolset and I love python as Programming language. I have a question regarding development for Mobile Devices and the "Classic" x86 Systems: ...
0
votes
1answer
518 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. ...
0
votes
1answer
51 views

How can I add a pip based dependency to a Quickly project?

There is a great topic here about dependencies from ubuntu repositories. But my app depends on python package, which has to be install with sudo pip install package. Can I add this kind of dependency ...
3
votes
1answer
198 views

Re-use toolbar code for each tab

I'm creating a music app using QML and it uses around five tabs, each using a toolbar. The toolbar should look the same, so instead of having the exact same code for each tab, I wanted to re-use the ...
0
votes
1answer
251 views

Ubuntu Touch SDK problems

I have installed the Ubuntu touch SDK the way it is advised on the Ubuntu dev website (with sudo apt-get install ubuntu). I'm using Ubuntu 13.04. The problems/symptoms are the following : When I ...
0
votes
1answer
111 views

Glade GUI in Python 2.7 crashes

I created a simple program using a glade .xml file and it, whenever I run the program, it crashes! Here's the Python code: #!/usr/bin/env python import pygtk pygtk.require("2.0") import gtk class ...
0
votes
2answers
331 views

Get $HOME and/or username without using C++

I'm working on the Music app and I need to know how to get the user name and/or home dir of the users. I've googled around for a while but can only find the variables for C++ or BASH. How do I get ...
0
votes
1answer
53 views

Maintaining kernel modules submitted in the Software Center over kernel updates

This question is specifically for submitting a package in the Software Center. If I wish to submit a package that contains a kernel module (*.ko) which will install in /lib/modules/ and there is a ...
3
votes
1answer
73 views

What license is the Ubuntu colour pallete?

I am developing some Chrome app and started using Ubuntu colours for it. The ones I found in the Ubuntu Colour Palette. I assume it's there and public so that app developers could create a consistent ...
2
votes
1answer
81 views

When the full SDK will be available?

I would be very interested to know when the full Ubuntu SDK is going to be released. Is there any preliminary schedule planned that could be published or is it still way too early stage? Or is there ...
1
vote
0answers
65 views

How do I find out how popular an application is?

For me there are two use cases when I am interested in the popularity of a given application or an application version on Ubuntu: There is a choice of several similar applications. Before I install ...
0
votes
1answer
276 views

Unable to show Popups Dialog in tab with webview

My app uses tabs, and one of them shows a web page using WebView. Now, I have a toolbar with one action button that I want to show a Dialog - but it's no go. Instead I get this error message when ...
0
votes
1answer
123 views

Quickly can't package, but raises no errors

I am trying to make a .deb package for my project in quickly. This is what I get: ilya@ilya-laptop:~/Projects/online-translator$ quickly package ...........Ubuntu packaging created in debian/ ...
0
votes
1answer
160 views

How to make an ubuntu SDK dialog not stretch over the full mainview?

When I create a dialog with the Ubuntu SDK, like in the example below, the dialog covers the full mainview: import QtQuick 2.0 import Ubuntu.Components 0.1 import Ubuntu.Components.Popups 0.1 ...
0
votes
1answer
99 views

Theme ListView text pulled from XML?

I've been working on my msm touch app and got to a point were I get the needed info from an XML file, but it is unthemed, and not as good looking as other "direct" text is. Its black and further to ...
11
votes
2answers
2k views

Are there any standard icons for qml-app-development?

I am developing a qml-app and I want to put icons on the buttons. I would like to use ubuntu standard icons to get the real ubuntu look for my app. How can I do this?
6
votes
1answer
582 views

What are the design guidelines for appindicator icons?

I am creating a Unity AppIndicator using Python + PyGObject, but I wish for it's icon to be in standard Ubuntu style. Where can I find appropriate guidelines for using colours (or is it just ...
1
vote
1answer
115 views

How to get Ubuntu AppIndicator icon coordinates

I'm working on Ubuntu Linux 12.04 and create software built on top of GTK+ 3 using pygobject. I've got a task of showing popup windows just below the app indicator icon of my application and I can't ...