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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How can i create and run visual basic projects and still run in windows

How can i create and run visual basic projects in ubuntu. After creating them in ubuntu would it be able to run in windows (visual studio). If there is a way then plz suggest me and software for it.
5
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1answer
849 views

How to raise user notifications in Ubuntu using java code?

How to raise user notifications in Ubuntu using Java code?
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1answer
90 views

Ubuntu packaging : why separate for 32-bit and 64-bit [duplicate]

Why we have to do separate packaging to applications for 32-bit and 64-bit Ubuntu Operating systems.I mean why some applications are making 32-bit and 64-bit separately and why some applications are ...
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1answer
346 views

publishing an app for ubuntu software center

I have a game I wish to publish for Ubuntu software center for free. Can I just zip all my files for submission, or do I need to create a .deb package first before submitting?
2
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1answer
106 views

How to make ubuntu realize application type?

I made a text editor for Ubuntu in Java, and now I want to upload it on the Ubuntu Software Center but I have ran into a problem, how will Ubuntu recognize that my application is an editor once people ...
2
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0answers
255 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) [...] ...
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1answer
161 views

Making an app for Ubuntu Software Centre [duplicate]

I would love to make apps and publish them on the Ubuntu Software Centre. After following the instructions on the developer centre, I built an app and published it. Now I have realised I have built an ...
14
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2answers
13k views

How do I view or install Ubuntu Touch apps?

Lots of people have started developing Ubuntu Touch apps for the Ubuntu App Showdown and just in general, and have published them in the Click App Store. What is the Click App Store, and how do I ...
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1answer
389 views

WebSQL and other databases not working with HTML5 apps

I am trying to develop an app for Ubuntu Touch using HTML5 and I need to create a database to store, well, everything in it. But QtWebKit supports neither WebSQL nor IndexedDB. Is there any workaround ...
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1answer
1k views

Why is my Ubuntu Touch app not visible in the Ubuntu Software Center?

I submitted a Ubuntu Touch app packaged as a Click package to the Click App Store and it was published a few days ago. It is not in my Ubuntu Software Center, or in the online version. I tried a lot ...
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1answer
527 views

How to access geolocation information on Ubuntu Touch?

It's strangely hard to find any documentation on accessing geolocation information for Ubuntu Touch specifically and even Qt5 more generally. The Qt Mobility APIs provided this in Qt4, and they seem ...
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1answer
1k views

Where do I submit applications written for Ubuntu Touch?

I've written an application for Ubuntu Touch using the Ubuntu SDK and have packaged it as a click package. Where do I go to submit it to the App Store to make it available for installation in Ubuntu ...
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1answer
359 views

What is the naming convention for click packages?

I have made a Ubuntu Touch app and intend to upload it to the Click app store. What is the naming convention that I should use for naming my click package?
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1answer
176 views

When will my application be reviewed?

I submitted an app to the Ubuntu Software Centre through my apps on developer.ubuntu.com yesterday. Will my app ever be reviewed or is my apps no longer used? My app is free and I packaged it myself ...
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2answers
2k views

QT code for U Touch returns `qmlscene: cannot find qt installation of ''`

I'm trying to start developing for Ubuntu and Ubuntu phone, but I get an error: qmlscene: cannot find qt installation of '' when I attempt to run my application in Ubuntu from the command line. I'm ...
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vote
1answer
1k views

Listmodel in QML: How to retain Listmodel values on page switch in page stack

I have an XML file to show list of items(listview), on click of each item i am switching to page which reads the XMLListmodel for each category using pagestack.push. After pressing back and again ...
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0answers
30 views

How to develop Ubuntu apps (2013 edition) [duplicate]

I know this question has come up before, but the answers can quickly go out of date. No pun intended. ;) Previously, it was the "quickly" tool to build apps. Now, developer.ubuntu.com points you to ...
2
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1answer
437 views

Is it possible to develop an app for Ubuntu with C (not C++)?

I just want to know if i can write GUI apps for Ubuntu using C--again, not C++. It's just that I hate having to learn a new language entirely (I know that they are similar in some ways but still). ...
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1answer
394 views

Can I make profitable app for Ubuntu Touch?

I would like to ask you guys, if there would be some sort of app policy regarding the Ubuntu touch. Just as in Android, and iOS, the developers could earn a reasonable amount of money, by making their ...
2
votes
1answer
46 views

How to show the numpad automatically when the textfield is loaded?

I'm making an app with the Ubuntu SDK where a user has to enter a number as fast as possible. I have a textfield in a page, where he has to enter the number: TextField { id: inputQuestion ...
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2answers
10k views

Can I sell my PyQt4-app without having a PyQt license?

I would like to sell a Python application that uses PyQt4. The commercial licenses for Qt PyQt cost thousands of Euros together. Do I need to buy a commercial license? Consider this from a "packaged"...
2
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0answers
107 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 problem....
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2answers
5k views

I get a error “IndentationError: unindent does not match any outer indentation level”

I get this error: Traceback (most recent call last): File "bin/mybrowser", line 32, in <module> import mybrowser File "/home/shaunyo/mybrowser/mybrowser/__init__.py", line 14, in <...
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2answers
589 views

How can HTML5 Ubuntu Touch apps access camera and microphone?

I am creating an app for Ubuntu Touch using HTML5. I am opening my HTML page using QtWebKit's WebView and I really need to let the app take pictures and record audio, however, I can't access the ...
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3answers
537 views

When I create a new project I can only choose “Other Projects”, “Non-Qt Project” and “Import Project”

I have a problem with ubuntu-sdk I installed it following the guide here Get-Started But then when I start ubuntu-sdk and try tro create a new project I can only choose "Other Projects", "Non-Qt ...
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1answer
7k views

What are Click packages?

I noticed that Ubuntu SDK recently had some updates and it installed a program named "Click". I would like to know what they are and how to use them. Also, would they make Debian packaging easier?
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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?
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1answer
39 views

How can I anchor a component to the top of the toolbar?

Using the Ubuntu SDK, how can I get an anchor to the top of the toolbar? I want something like this: MyItem { anchors.bottom: toolbar.top } so that I can anchor an item to an omnipresent ...
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1answer
45 views

Plugin ubuntu Desktop [closed]

I'm want to do a plugin to Ubuntu in my term paper, but i never had seen something like this to ubuntu. I want to know about the complexity to "extend" an OS, how much time will spend to do something ...
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vote
1answer
52 views

How can I pin the toolbar so that it remains revealed?

An always-revealed toolbar would be more suitable for a pointer-driven interface. How, using the Ubuntu SDK, can I set the toolbar to be (and remain) revealed?
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2answers
475 views

Fade in or out a QML Audio file?

I have a QML Audio element in my app that plays a sound. When I click a button I execute: audio.play() and when I click it again I execute: audio.stop() Ideally I would like to fade the sound in ...
4
votes
1answer
233 views

i18n vs qsTr (what is the difference)

In this tutorial http://developer.ubuntu.com/resources/tutorials/getting-started/currency-converter-phone-app/ you can see i18n.tr was used for the internationalisation of text in the Qml file. Today ...
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1answer
891 views

ubuntu 13.04 unable to locate package ubuntu after installing ubuntu sdk

Am new to ubuntu and software development but after installing the sdk via the terminal, it say "unable to locate package ubuntu" then "unable to locate package sdk"
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2answers
85 views

I want to use Ubuntu for developing my application - pl help

I am an Mfg Engg Professional with 30 years experience in CNC / CAD / CAM fields. I have stumbled upon an application for time & motion study and using VB.net SQL 2005 Express developed it into a ...
5
votes
1answer
962 views

How to use Arguments in QML without getting qmlscene arguments

I'm trying to write a QML application to be launched by qmlscene. I want this to accept arguments, so I'm using the Arguments object. However, this gets the arguments passed to qmlscene as well as ...
6
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2answers
558 views

How do I use OAuth from an Ubuntu Touch app?

I'm writing an Ubuntu Touch application in QML. I'd like to integrate with Trello. There are two ways to log into Trello in the API, one of which is OAuth, which I plan on using. What is the best way ...
0
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1answer
60 views

QT Creator - Testing Code

I am doing the tutorial 'CurrencyConverter'. But I am not able to see the output. The code compiles fine. But the mainview after opening just shows blank window. What might be the issue?
3
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1answer
1k views

Quickly application create config folder and config file under user's home folder

I want to create an app with Quickly but i have a question: Lots of applications create config files under ~/.config or ~/.application/config in home folder of current user and keep configs, user ...
5
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1answer
116 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
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1answer
158 views

Why do I get an error when trying to use U1db with the Ubuntu SDK?

I want to create an app with the Ubuntu SDK. It requires the creation of a database, so I thought it would be easy to create it with U1db. First I had many issues finding I needed to install the ...
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1answer
59 views

Are Python apps allowed in Ubuntu App Showdown?

I want to know if python apps (containing only a .py file) are allowed in the latest app showdown. If not, how can it be ported to QML?
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2answers
77 views

What are the plataforms/devices Ubuntu touch will run from? [duplicate]

Having been a first day contributor to Edge (shame it didn't get there) I appreciate phones & tablets running Ubuntu is the aim, for next year. In the meantime, can you please clarify what ...
1
vote
1answer
538 views

Receiving drag events in a WebView in a QML application

I'm working on an app using QML and the Ubuntu SDK. One of the Pages contains a WebView. While the WebView receives click events just fine, it doesn't receive drag events, as I would like it to. I ...
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1answer
394 views

How do I install QtTest for the Ubuntu SDK?

When I select "Build -> Ubuntu Touch -> Create Application Package" in the Ubuntu SDK, the build fails with the error "FAIL! : qmltestrunner::tst_hellocomponent::compile() module "QtTest" is not ...
3
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0answers
582 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, ...
16
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4answers
3k views

Developer resources for desktop apps?

On developer.ubuntu.com most resources seems to be targeted to Ubuntu touch. If I wanted to write an Ubuntu desktop application, where can I start? Is the Ubuntu SDK for the desktop too? I read that ...
4
votes
1answer
149 views

How to host a project on Launchpad?

I want to create a Python project and host it on Launchpad. I have already produced Python code. What I want to know is: How can put it on Launchpad? How can I make a PPA for it?
3
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1answer
108 views

Should all Ubuntu Touch apps use a MainView?

I know the MainView component is the recommended container for all widgets that are part of an Ubuntu Touch app. However, I'd like to understand whether it is essential to use it and what it brings to ...
3
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1answer
83 views

Making the MainView fill screen on device

I have been creating an app in the Ubuntu SDK. I want to make sure that the app fills the screen on the device (phone, tablet, etc.). I do not have a ubuntu phone or tablet to test this functionality. ...
12
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1answer
144 views

How to add dependency after submitting a proprietary app to USC?

I submitted my app "Brightness Controller" under proprietary license and it has been published. It contains an executable .py file. But the app depends on python-wxgtk2.8 I wrote it in the comments ...