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

0
votes
1answer
28 views

Button Click not recognised in Quickly

I am running quickly 12.80.1-0ubuntu2 and for some reason the apps that I generate no longer recognise button clicks. A few weeks ago I created an application using the ubuntu-application template ...
1
vote
1answer
177 views

Read lines from a text file in QML Qt/Quick

I need open a text file and read it's contents line by line and store each lines in a string list in qt quick 2.2. Can every one help me?
18
votes
3answers
1k views

How to write Appindicators in python?

I'm looking to try and develop some simple indicators, for numlock/capslock and brigthness, etc. How would I go about creating indicators in python? Are there any tutorials that walk me through ...
4
votes
2answers
2k views

What are some good developer resources for QML/Qt Quick?

I have seen the tutorial for the mobile platform on the Ubuntu developer site, but I am completely new to the Qt stack. Are there any other good resources for getting started with Qt/QML/Qt Quick?
0
votes
1answer
37 views

How to make a debian package from ubuntu SDK?

I have created an App using the Ubuntu SDK and now I can't find a way to package it. The documentation says the easiest way to do so is using the publish button located on the left bar in ubuntu SDK, ...
4
votes
2answers
138 views

What framework should I use in my manifest file

I'm writing an application for Ubuntu for Phones and need to know what framework goes in the manifest.json file. I submitted an app but got this back:- 'ubuntu-sdk-13.10' is obsolete. Please use a ...
1
vote
2answers
144 views

How to package an application icon properly?

There is an blog article on ubuntu developer blog. http://developer.ubuntu.com/2012/02/how-to-prepare-a-compiled-application-for-ubuntu-software-center/ I followed all steps exactly. But the ...
0
votes
1answer
128 views

How to create Radio player based on Gnome MPlayer?

I want to make a radio player based on Gnome MPlayer, but just for one radio station, some like a native radio application. I don't know if I have permission to modify MPlayer, but since is open ...
0
votes
0answers
36 views

Qt C++ windowMinimized no reaction on Ubuntu

Heloo all! Me and a friend are creating an app for linux, everyting works but the custom minimize button doesnt whant to work on Ubunutu 14.04, there is no reaction when presed clicked an so on. Any ...
1
vote
1answer
114 views

Qt Quick 2.0 UI Application Not Displaying on Touch Device

I'm trying to run a tiny (very tiny) Qt Quick 2.0 UI application on my Ubuntu Touch device (Galaxy Nexus Phone). Qt Creator successfully pushes to the device (copies via ADB and runs QMLScene) but I'm ...
0
votes
1answer
136 views

Ubuntu SDK: Template HTML5 app shows warning

I have created a new HTML5 app with the Ubuntu SDK, and whenever I click the Run button, I get the following output on the console: Setting import path to: ...
0
votes
1answer
65 views

Why does not app update appear in Software Center?

I have submitted an update (v 1.1.0) for Brightness Controller and it was packaged about two months ago. But it still does not appear in Software Centre. It shows 1.0.1 (the previous version) ...
4
votes
6answers
2k views

Which window has current focus?

I'd like to know (programmatically) which window has current focus. Is there a window-manager independent way of discovering that? Otherwise, how does one determine which window has focus in Compiz ...
0
votes
0answers
15 views

Porting App created using Ubuntu SDK onto an Embedded linux board

I have created an App using the Ubuntu SDK, which I want to port onto an embedded linux based device. The App uses QML and C++. How should I package the app for deployment taking into account the ...
8
votes
3answers
728 views

What are the alternatives for notify-send?

I use notify-send for desktop notifications and I get notifications with expected summary and body. However, notify-send has limitations and so I would like a few recommendations on alternatives for ...
1
vote
0answers
354 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 ...
6
votes
1answer
1k views

What is the correct way to use g_signal_connect() in C++ for dynamic unity quicklists?

I want to make my application use dynamic unity quicklists. For building my application I am using C++ and the QtCreator IDE. When a menu action is triggered I want to be able to have access to a ...
2
votes
1answer
621 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 ...
3
votes
1answer
50 views

Unable to access i18n in QML app's JS file

I'm having trouble importing the i18n library included in Ubuntu.Components 0.1 for use in a JS file. I initially ran into my question/problem while hacking on the 'Clock' Ubuntu Touch core app, but ...
0
votes
0answers
39 views

How do I add C++ Source and Header Files to UbuntuSDK Project?

I am trying to add some C++ Code to an Ubuntu SDK Project which is (GUI) based in QML. Unfortunately I can't seem to understand how I am supposed to do this. Usually QTCreator allows me to right click ...
1
vote
1answer
91 views

Ubuntu SDK: QML with C++ recommended App Design Methodology

Are there documented general guidelines for mixing QML with C++ for ubuntu apps? "QML for UI design and C++ for logic" seems to be the trend. Is this the right way forward?
2
votes
2answers
3k views

How can I create a simple debian package from binary?

I have been researching debian packaging, but I can't seem to figure out how to package a C# mono application made up of a single executable and a few resource files. Can anyone help me figure out? ...
2
votes
2answers
627 views

QML Qt 5.2 problem with mp4 video

I have qt 5.2(ubuntu sdk) installed on Ubuntu 14.04 When I try to run QML code: MediaPlayer { id: mediaPlayer source: "../path/test.mp4" autoPlay: true } VideoOutput { id: video ...
4
votes
1answer
80 views

How come many of the AppShowdown apps aren't available in Ubuntu anymore?

After upgrading to 12.10 I've noticed that I can't install some of the nice apps created for the AppShowdown, such as: Cuttlefish Blubphone (Lightread also came out quite late in 12.10) It seems ...
0
votes
1answer
62 views

HUD and menu integration for Ubuntu Touch apps

Is there a way to move the Tabs into a menu, or the toolbar options into a menu? It would be nice enough to have the toolbar options display in the menu when on the desktop.. Is there any work to add ...
2
votes
3answers
109 views

What is the best way to start developing ubuntu touch apps? [closed]

I'm a starting programmer and I can write c++ programs (nothing more or less). I want to get started with writing Ubuntu touch apps, but I have no idea were to start. Should I just jump into it, or ...
1
vote
2answers
67 views

Can the C++ API be used to develop scopes for Unity 7?

I want to develop a Unity 7 scope for Ubuntu 14.04. I've found a nice introduction here, but unity-scope-tool depends on Unity 8 which I don't won't to install. As I can see, most of the other scopes ...
0
votes
1answer
56 views

How to package a net-beans java project for Ubuntu

I'm in final year of my b.tech, for project I have created an multilingual dictionary in Java (net beans 6.7.1) in which we can search words meaning, its synonyms, antonyms and an example, or if its ...
0
votes
1answer
28 views

Ubuntu Touch App File Type

Hello I was wondering what type of app files you can upload to the ubuntu touch app store It is apk files?
17
votes
3answers
12k views

Gradle in Ubuntu

It appears that Ubuntu doesn't have new versions of Gradle in their repositories for some reason. I need it for a project that will be build by Launchpad. What should I do about this?
0
votes
0answers
31 views

How to generate final application to publish in Ubuntu Touch Apps?

I created a simple application for Ubuntu Touch, but I do not know how to generate a final package. I click "Publish" and put in the information needed (Name, Maintainer, Title, etc...), but if i ...
4
votes
1answer
124 views

What does desktop_Icon mean?

I've submitted an app to the software store but it gets sent back with this error:- desktop_Icon What does this mean and how do I fix it?
1
vote
1answer
104 views

How To install kivy for python and its dependencies to build android apps?

I have ubuntu 12.04, I read the documentations and it confuses me, I just want to know what to type in the terminal or what and how to download whatever I need. Please Help.
2
votes
0answers
24 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
1answer
70 views

Is it possible to develop Ubuntu Application using java

I am a Java Developer & want to develop application for Ubuntu. I also visited developer.ubuntu.com site and successfully installed Ubuntu SDK and Editor but it is on Unity code and HTML views. I ...
0
votes
2answers
123 views

How to change window opacity dynamically in Python and Quickly?

The app is written in HTML and is running using webkit and Quickly. The opacity can be changed using Glade. I want to add a slider functionality in HTML which will change the title of the HTML ...
1
vote
1answer
42 views

What requirements should my App meet in order to be accepted into Ubuntu App Store?

This question attempts to identify the constraints an Ubuntu (Touch) App should consider, in order to be accepted by the App Store. Should it be stable not beta? Should it not allow users to ...
1
vote
3answers
55 views

Click package validator is missing from Ubuntu SDK!

I can't see an option to validate click packages in ubuntu-sdk. Am I missing something? I'm on Ubuntu 14.04 ubuntu-sdk version : 1.126 qtcreator-plugin-ubuntu version : ...
0
votes
1answer
49 views

Where does dm crypt keeps crypt list?

If we enable encryption via cryptsetup tool on linux. Where does it keeps the crypt list/ encryption disk sector information etc ? Is it resides inside the LUKS header or device mapper kernel itself ...
1
vote
1answer
81 views

Ubuntu Touch - Multiple App Windows

I'm learning how to make Ubuntu Touch OS applications, and I looked all over the web for something, but didn't find any satisfying results. This is either because I am the first to ask this question, ...
1
vote
1answer
52 views

How to use QAudioOutput in Ubuntu Touch

When I run QAudioOutput on Ubuntu Touch in confinement, It reports permission error. Basically it is trying to create a directory in /run/user/*/pulse which is rejected by the confinement. How to ...
1
vote
0answers
266 views

How to deploy my Qt app statically on ubuntu ? It is running on ubuntu 14.04 only

I wrote a application with Qt 5.x and the compiled binary is only working on my development machine running 14.04 on other machines running 14.04 on linux mint 16 I already inserted the CONFIG ...
1
vote
2answers
205 views

Right package for JSON-GLib development headers

During configuration of one project, I got the error: checking for JSON... no no configure: error: You must have JSON-GLib >= 0.14.0 development headers installed to build. make: *** ...
0
votes
0answers
33 views

QML: How do I set my icon in the Ubuntu SDK with a CMakeLists based project?

How do I set my icon in the Ubuntu SDK with a CMakeLists based project? Do I need a specific type of image file, or can I use just a png?
0
votes
0answers
15 views

revkit installation [duplicate]

so i need to install this software called revkit on ubuntu 12.10. below are the instructions as per the manual: Requirements RevKit needs a couple of packages which can easily be installed with the ...
1
vote
1answer
48 views

develop or contribute to ubuntu community

I'm a newbie to ubuntu development. I have developed many apps for windows. My college and school uses only windows. So, I'm very familiar with developing in windows. But, when i wanted to switch over ...
4
votes
1answer
119 views

Correct handling of application URIs from Unity Dash

At some point, Unity changed the Uri type it returned when a drag-n-drop operation occurred of applications from the Unity Dash to a Gtk window in an app I wrote. In 13.04 (Unity 7.0), the data call ...
3
votes
2answers
45 views

How to go back from a PageStack's Page to the parent tab in the UI Toolkit

So in a previous question I tried to use the Ubuntu UI Toolkit to nest a PageStack within the Tabs component. It seemed to work, but it had its quirks, so I'm now trying another option, which in ...
4
votes
2answers
101 views

How to hide the header of the Tabs component

I'm writing an app using the Ubuntu SDK, and I've got a PageStack component inside aTabs component. When I load one of the pages inside the PageStack, it all works well, and in the header the name of ...
5
votes
1answer
136 views

What does .gu stand for?

What does .gu stand for? For example: ConditionalLayout { name: "row" when: layouts.width > units.gu(50) //right here Row { anchors.fill: parent etc....