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.

learn more… | top users | synonyms

4
votes
0answers
105 views

Documentation / guides for offline ubuntu phone scopes

I've been working on an Ubuntu phone scope that is NOT connecting to the internet, it is retrieving local results. I am having difficulty, which is mostly due to not having a guide for how to write a ...
3
votes
0answers
231 views

(QML) Flickable not working as supposed

So, while building an Ubuntu app I needed to use Flickable for scrolling, so now I have code of the form Page{ ... Flickable { anchors.fill: parent content.height: element1.height + ...
3
votes
0answers
139 views

FreshBooks Online Account

I'm developing an application that connects to FreshBook's API. I can either integrate the account authentication process within my application, or I can develop an Online Account that could be used ...
3
votes
0answers
770 views

TypeError: Cannot call method 'hasOwnProperty' of null, while creating a QMLscene window

I am trying to make a simple Ubuntu Touch web application with Qt Creator. I have set up a new project according to the tutorial and committed the files to Bazaar. I have set a url instead of the ...
3
votes
0answers
362 views

QML app icon not effective when called from app.setWindowIcon()

I've a Qt5/QML hybrid app built with Ubuntu Touch SDK. I'm trying to set the app icon for it, but without success. Code looks like this: int main(int argc, char *argv[]) { QApplication app(argc, ...
3
votes
0answers
75 views

How to support converged device layout changes?

I'm interested in developing some applications for Ubuntu, using the SDK, for converged devices, including phones, tablets, and PCs. How can I detect which device the application is running on, and ...
3
votes
0answers
408 views

Kinect + Webcam - Bandwidth issue

I am making an application on Ubuntu 12.04 and ROS Fuerte (Robot Operating System) using the Microsoft Kinect sensor and a logitech webcam. Both work perfectly fine independently. For information I ...
3
votes
0answers
502 views

How do I get high resolution icons in Unity for my application without a .desktop file?

I am trying to fix a problem I found with a Java application. It has a too low res icon. After reading the source of it I modified it to have a bigger icon. SWT uses the gtk_window_set_icon() function ...
3
votes
0answers
226 views

Python Access Pidgin Data Structure by Dbus

I recentely started to program in Python and making a script/plugin for Pidgin,i need to access PurpleConversationUiOps and use the has_focus field,based in some examples in documentation of Pidgin i ...
3
votes
0answers
112 views

How to get Yelp to open the docs?

quickly tutorial Result: An empty Yelp window with the XML file opened in gedit. yelp /usr/share/quickly/templates/ubuntu-application/help/tutorial.xml --> Exactly the same problem. Worked fine a ...
2
votes
0answers
13 views

How to create local repository for Ubuntu Snappy

How to create local repository for Ubuntu Snappy? For example I use reprepro to create Ubuntu repository for deb packages.
2
votes
0answers
24 views

Application rejected on myapps.developer.ubuntu.com. What can I do?

I submitted a desktop application on myapps.developer.ubuntu.com long time ago. But it was rejected today with the following reason: This package submission process is now deprecated. To provide my ...
2
votes
0answers
41 views

Can't start ubuntu-filemanager-app in emulator

I downloaded ubuntu-filemanager-app opened the project in UbuntuSDK and want to run it in Emulator , but I get this error: 23:49:37: Running steps for project ubuntu-filemanager-app... 23:49:37: ...
2
votes
0answers
82 views

Ubuntu Touch HTML5 How to create a fixed header?

How can one create a fixed header when creating a Ubuntu Touch Application with the HTML5 SDK? The api documentation does not offer any help and I could not find any HTML5 examples that were using a ...
2
votes
0answers
57 views

Unity 8 scopes: changing the card color has no effect

The example scope that comes with the ubuntu-sdk implements a client for the OpenWeatherMap API. If I specify "card-background" in the category renderer template (because I want to have background ...
2
votes
0answers
44 views

Ubuntu SDK, QML: how do I create a vertical slider?

I am trying to create a vertical slider: http://developer.ubuntu.com/api/qml/current/Ubuntu.Components.Slider/ How can I do that? Just rotating it doesn't seem like a good idea, it messes up anchors ...
2
votes
0answers
94 views

Cannot launch app in Ubuntu Device

I have just installed the Ubuntu SDK on an Ubuntu 14.10 system (a virtual 32-bit install). I have also installed Ubuntu Touch on a 2013 Nexus 7. The device is seen by the host and the device is ...
2
votes
0answers
129 views

How can I detect screen rotation with QML

I've been trying to create a Ubuntu QML application, but when I rotate my screen while it is running on my tablet, the header is semitransparent and the content below is exceeding the screen's height ...
2
votes
0answers
31 views

Is there a Bool or Flag you can use in QML to determine whether a phone is running the application?

For example: Text { text: isPhone ? "this application is running on a phone" : "this application is not running on a phone" }
2
votes
0answers
35 views

How do I delete files that my app owns from QML?

My app imports files from ContentHub and saves them into ~/.local/share/applications/${myappid}/Pictures/ and I would like to be able to delete them when the user no longer wants them.
2
votes
0answers
183 views

How does one run QML tests on a Ubuntu Touch Phone?

My application has QML tests using QtTests that I run locally on the desktop via qmltestrunner. I am interested in running these tests on the device to simulate real conditions like the on-screen ...
2
votes
0answers
137 views

Targetting Boost 32-bit While on 64-bit ubuntu?

Well i have libboost-all-dev installed, but i am trying to compile for 32-bit. I can't install libboost-all-dev:i386 either. g++ -lboost_filesystem main.cpp g++ -m32 -lboost_filesystem main.cpp The ...
2
votes
0answers
411 views

module verification failed signature and/or required key missing

I am working on a kernel module, which is working fine. However, looking through dmesg, I see a message regarding my module that module verification has failed (module verification failed signature ...
2
votes
0answers
25 views

Deleting a application draft

I accidentally started submitting a click application when I meant to submit a desktop application is there a good way to delete it in the draft state? I searched around the "Manage" menu and I tried ...
2
votes
0answers
338 views

Multitouch in Qt

I've got a fresh install of Kubuntu 14.04 and Qt Creator/5.2.1, and I'm trying to get multi-touch working for the example applications like photosurface. My input device is an Acer T272HL 10 point ...
2
votes
0answers
41 views

Ubuntu keyboard shortcut guidelines?

Is there an authoritative specification of keyboard shortcut guidelines for Ubuntu? I am looking for something like the OS X guidelines that result in unified application behaviour for common things ...
2
votes
0answers
60 views

Unity Scope to read XMP metadata from local files

I have seen various tutorials on writing Unity Scopes, including the one on developer.ubuntu.com However, they all appear to concentrate on scopes that download data from various web services. I am ...
2
votes
0answers
25 views

Touch SDK Expansion

In the Ubuntu Touch SDK description http://design.ubuntu.com/apps/building-blocks/expansion there is an UI element which is mentioned, namely the Expansion. From the description I don't really ...
2
votes
0answers
41 views

Guidelines for packaging web app

For a while now, I'm trying to build an Ubuntu package for PPA upload, and facing all sort of issues understanding bzr dh-make and such. The package is web application (php-based). Most packaging ...
2
votes
0answers
218 views

My postinst script launches a service successfully but apt-get apparently shuts it down. Why?

I have this package with a postinst script that launches a service as its last step. Something like: #!/bin/sh set -e . /usr/share/debconf/confmodule [...] case "$1" in configure) [...] ...
2
votes
0answers
102 views

Terminal won't print “Refresh” in terminal

I have a slight problem today with my Ubuntu app. I've been following a Youtube tutorial. I've provided the link below with the rest of the links provided to help you find out the cause of the ...
2
votes
0answers
31 views

How does the Ubuntu SDK handle accessibility?

How do I design an application in the Ubuntu SDK so that it integrates with assistive technology such as screen readers?
2
votes
0answers
25 views

Will Ubuntu Touch apps work in Linux / Windows / Mac?

I mean, it looks like they're made with cross-platform technologies, but realistically how much effort would be involved in (say) making a Windows installer for one?
2
votes
0answers
619 views

How can I set up a build target in Qt Creator to compile for 32 bit on 64 bit Ubuntu?

I am running 64 bit (x86) Ubuntu and would like to be able to build Qt projects for a target architecture of 32 bit (x86). Qt Creator allows the configuration of multiple 'build kits' for compilation ...
2
votes
0answers
156 views

Ubuntu Phone App Development Clarification

I attempting to follow the Ubuntu Phone App development tutorial to make a Currency Converter, and I am simply unable to complete the tutorial. I have installed all of the latest QT/Phone related ...
2
votes
0answers
39 views

Are USC applications allowed to install .desktop files?

Ubuntu's official site for developers says: Technical requirements: In order for your application to be distributed in the Software Centre it must: Be in one, self-contained directory when ...
2
votes
0answers
468 views

What's the architecture of Ubuntu Phone?

Will Ubuntu Phone be more an Android or more a "normal" Linux? Or in other Words: will it be possible to have e.g. wxWidgets/wxWidgets-applications on it?
2
votes
0answers
77 views

How to make Gtk spinbutton symbolic in 12.04 in only a specific application?

I am currently developing an application for Ubuntu 12.04 and Ubuntu 12.10 systems. My application is completely monochromatic except for the spinbuttons as seen in the screenshot below. This issue ...
2
votes
0answers
139 views

unable to install the Ubuntu Toolkit

I wanted to install the Ubuntu tool kit to get started programming, but when the install was nearly on its end it threw up the following error: The following packages have unmet dependencies: ...
2
votes
0answers
41 views

How to specify target architecture in quickly apps?

I'm building a quickly-app, Do I have to specify somewhere the architecture (amd64,i386,etc) in which my app can run? Thanks in advance. Regards.
2
votes
0answers
101 views

compiling a shared library

I'm doing a 64-bit rewrite of some code I wrote that implements a novel approach to genetic algorithms that I want to turn into a shared library exclusive to Ubuntu using code::blocks/gcc. I have ...
1
vote
0answers
12 views

What is the correct way of using Qt 5.4 in my .deb package?

I want to create a .deb package for an application that I am working on, which depends on Qt >= 5.4 For some supported versions of Ubuntu this version is not available except via packages from a ppa. ...
1
vote
0answers
129 views

Python app crash after sending command “GPIO.setup( 7, GPIO.OUT)”?

Python app crash after sending command "GPIO.setup( 7, GPIO.OUT)" !!! Action step: pi@rp:~$ python3 Python 3.4.3 (default, Mar 26 2015, 23:09:09) [GCC 4.9.2] on linux Type "help", "copyright", ...
1
vote
0answers
34 views

How to add items to a listview from the user perspective

I wanted to know how could I make it for a user to add items to my listview, so that his events could stay there, and later move to a database. beneath it the code I've for my listview now i want know ...
1
vote
0answers
54 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 ...
1
vote
0answers
43 views

How to autostart an application on Touch device?

What if you want to distribute some daemons in ubuntu-click packages? What is the preferred way to start them on boot?
1
vote
0answers
38 views

Can ubuntu touch scopes access the dbus at any time?

I was thinking of writing a scope for downloading music and video content from its sources, and since there is not yet a UI for the ubuntu download manager daemon, it seems like there is "no" ...
1
vote
0answers
48 views

Ubuntu touch HTML 5 how to create complex headers?

I am trying to build a small html5 app for Ubuntu touch. In general it is rather difficult to handle the html5 code. The design guide gives a lot of suggestions how to build an app, but neither the ...
1
vote
0answers
64 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 ...
1
vote
0answers
88 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?