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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3
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0answers
158 views

could not find or load the Qt platform plugin “xcb” in ubuntu-sdk

Command: $ ubuntu-html5-app-launcher --www=www Error: This application failed to start because it could not find or load the Qt platform plugin "xcb". Reinstalling the application may fix ...
1
vote
2answers
906 views

DBus nested dictionary in python

I have dictionary like this {key: { key1: '', key2: [{ key3: '' }] }} I have tried a{sv}, but I got error: **to message with signature a{sv}: <type 'exceptions.TypeError'>...
1
vote
1answer
58 views

How to remove Ubuntu SDK click target (failed one)

I was trying to create click target for i386 architecture with 15.04 vivid API. But it always fails at the end. I have retried it few times with no success. So, ok, I'm using armhf one. But! After ...
0
votes
0answers
24 views

why ubuntu-SDK emaulator is running very very slow?

i make a webapp in Ubuntu-SDK for testing purpose i create a device and try to run my webapp in an emulator the emulator is very very slow.how can i solve this issue.My Ubuntu version is 15.10 64bit....
0
votes
1answer
238 views

Ubuntu Phone - How can I program app running, when device screen is turned off?

How can I program my mobile application to be still running in the background, after the user turned off the screen? I'm developing the application in QML.
0
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0answers
14 views

Directory Architecture for Desktop Apps

Hey guys the agency is back to submitting desktop software, we have done this before, yet the way of means has seemed to change. I was wondering if you could send me an example of the directory ...
0
votes
1answer
58 views

Which aggregator scopes exist in ubuntu scope?

I was thinking about developing an aggregator scope for ubuntu touch, but I can't find a list of some sort that shows which aggregator scopes are already available. On the ubuntu website, they give a ...
1
vote
1answer
98 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 ...
0
votes
1answer
297 views

What is the difference between libprotobuf-dev and lib-protobuf8

I want to install protobuf for my cpp project, I searched protobuf with apt-cache search protobuf and the result shows blow: libmirprotobuf-dev - Display server for Ubuntu - protocol definition ...
8
votes
3answers
2k views

How to create a sliding widget (GTK+, Quickly)

Recently I've seen this widget in Gedit: It appears when you press Ctrl + F. What I am interested is in how to get the sliding effect. Any suggestion will be appreciated.
7
votes
3answers
6k views

How do I create and use keyboard shortcuts in a Gtk app that I am developing?

I am creating an application for the Ubuntu App Showdown in Python + Gtk with quickly. I am calling it Discvur. I would have liked to include some keyboard shortcuts. Searching the web, I found this ...
0
votes
0answers
78 views

Cannot find boost/type_index.hpp after installing boost-all-dev

I have just installed a fresh copy of ubuntu vivid (15.04), then did the following (filtered history command dump): 18 [2016-01-14 23:32:41] sudo apt-get install clang-3.7 clang-3.7-doc libclang-...
0
votes
1answer
133 views

“Ubuntu.Connectivity” is not installed

who can I install Ubuntu.Connectivity 1.0 on Ubuntu 14.04 to use it in my application on nexus4 I have used the example: http://developer.ubuntu.com/api/qml/sdk-14.10/Ubuntu.Connectivity....
0
votes
1answer
33 views

list of available targets for openUrlExternally

Using Qt for my ubuntu touch application and I'm having trouble getting it to launch the text messaging application. using Qt.openUrlExternally('sms:'+carduserphone) carduserphone being a variable ...
1
vote
0answers
75 views

Ubuntu SDK click package error: Could not find compiled binaries for architecture 'armhf'

I've recently had this error when trying to build a click package for the latest SDK (15.04.1). The app I am trying to build a click for is https://launchpad.net/deliverytracker The app hasn't been ...
5
votes
2answers
119 views

How do I update my own application in the software center?

Some applications use web services to provide services to users (especially Unity lenses). Things with APIs that might change, or things that might be updated. So what happens when someone submits a ...
1
vote
0answers
59 views

Ubuntu SDK: Where are the examples?

I am newbie to Ubuntu SDK. Question: I want to see all the 57 Examples, but nothing to find. Screenshot 1: Question: What does these error messages say in plain english? Error1: Starting /usr/...
1
vote
0answers
37 views

Ubuntu touch app with nodejs library [duplicate]

I want to write an application with the library in nodejs. Is there any way to connect QML or C++ with nodejs on ubuntu touch? Edit: I want to write a native application (in QML) and use a library ...
3
votes
0answers
197 views

How do I develop a Ubuntu application using the Go language?

I want to develop some application for the Ubuntu platform. But I don't know C++. I can learn QML very easily. The problem is that the logic or process behind the scene in an application seems to use ...
0
votes
1answer
81 views

Problem with android studio

I try to install android studio but I found this error. Can someone help me? If I write on terminal sudo apt-get install android-studio Reading package lists... Done Building dependency tree ...
0
votes
1answer
110 views

Display column values from sqlite db

I am attempting to return all column values from an Sqlite db to a Qchart in qml in Ubuntu SDK - the db contains various fields including kilometres, miles, etc. I would like to return all values in ...
0
votes
1answer
2k views

How to solve [Errno 30] Read-only file system

I'm new to this forum, and this is my first question: I bought the meizu MX4 ubuntu edition today. I would like to install Ubuntu SDK. I tried to follow this walkthrough: https://developer.ubuntu....
1
vote
1answer
89 views

Online IDE with an Ubuntu workspace?

Are there any online IDEs out there that have a Linux compiler and/or Ubuntu/Linux workspace? I often work away from home on Linux projects, and usually on Windows PCs, so it'd be great if I could ...
3
votes
4answers
838 views

Setting up a build system for Python app

In trying to sort out this issue, I have run into the following problem. I have a Python script that gets installed to /usr/lib/. But I need to get this script into a build system so that I can get ...
1
vote
0answers
28 views

How can I create a chromium-like background app?

I want to create an application that (like chromium) creates an icon on the top menu bar and after you close the application, the icon is still there and the application continues running in the ...
0
votes
0answers
25 views

How to create application from bash file? [duplicate]

I have bash file, it's about resizing pictures and adding color borders to each picture..it runs in ubuntu 15.04 well..it works on imagemagick..I wanted to make it as application like ubuntu ...
11
votes
5answers
2k views

Why do most GNOME developers prefer Python over Java for GTK+ programming? [closed]

I only know C and Java. And I really don't want to learn another language when I can work with what I already know. I haven't ever written a GTK+ application, but I am planning to start with an ...
0
votes
0answers
26 views

Ubuntu SDK AppArmor issues with opening CSS/JS files from filesystem

I'm trying to create a new app using HTML5/JavaScript with Ubuntu SDK and my new Ubuntu Touch phone. I've managed to run it on my phone, but it doesn't load any styling information and without ...
0
votes
1answer
215 views

How to access local music files/directory with HTML5 Ubuntu App?

I'm building an Ubuntu app in HTML5, using the Ubuntu SDK. From what I can tell, I should be using contentHub to access music files in /home/Music/, however I can't make heads or tails of the API. (...
0
votes
0answers
23 views

Ubuntu snappy software update cycle

I want to use Ubuntu snappy for our project which is basically secure update the application. In the Ubuntu IoT I found that it has the feature of secure FOTA. The basic idea is- we run snappy on our ...
0
votes
1answer
23 views

.cpp and .h files of new classes are not showing in Ubuntu SDK tree

I've added new classes to my project via Ctrl-N >> C++ >> C++ Class. However, after the files are added to my models/my-project folder, it does not show up on the tree in Ubuntu SDK. Why is this? ...
2
votes
0answers
86 views

How to publish Unity Game Engine app (executable binary) to Ubuntu Store?

Quite recently Unity Game Engine (not to be confused with Ubuntu's Unity user interface) added an option to create a linux build. The result is a set of two executable binary files .x86 and .x86-64, ...
0
votes
1answer
90 views

How to write a C++ backend for Ubuntu Touch that can access internet?

Is there anyway to write a C++ backend for an Ubuntu Touch application that can access the internet, and download files? Or do I have to do that through QML, and pass it to objects written in C++?
0
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0answers
35 views

Is there a reasonable chance of making money on an Ubuntu desktop utility application?

I recently asked this question on Quora. Unfortunately I didn't get much of a reply, so I thought of asking here... Hopefully this question is not off topic, but I want to know if any others here ...
1
vote
1answer
79 views

QML dynamic scoping not working (ReferenceError)

I am trying to reproduce the example here where the TitlePage.qml component creates two TitleText instances even though the TitleText type is in a separate file (under Section: Component Instance ...
5
votes
2answers
9k views

Adding icon to the system tray (notification area) [duplicate]

Possible Duplicate: How to program a status icon that will display in Ubuntu 11.04 as well as in other distributions? Hello, I have a small audio recording application programmed with GTK/GDK. ...
2
votes
1answer
7k views

Modification of stack size by ulimit -s

When I type ulimit -s in terminal it shows 8192. Does it mean that in my C code I could only have local variable of 8192 bytes? I am confused which stack size. Does ulimit -s change when we modify ...
3
votes
0answers
55 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
1answer
205 views

Where should I save temporary files of the app I am developing?

I am developing an app for the Ubuntu App Showdown 2012, say "myapp". It needs to download files from the web, store them temporarily and then read them. Where should I save those files ? Now I do it ...
1
vote
0answers
41 views

Shared libraries in phone apps

I am trying to port this (https://github.com/jobe-m/ownkeepass) keepass app to Ubuntu Phone. I am just at the beginning an want to include the needed libraries and plugins. I didn't write a UI yet. ...
1
vote
1answer
23 views

Documentation for GNOME application code?

I want to get involved in GNOME development, however I have one problem, there is such a large amount of code in every package, and so many files and variables that it's really hard to find bugs ...
17
votes
2answers
9k views

How to read dbus-monitor output?

I'm playing around with dbus-monitor to try and understand how dbus is working in Ubuntu environment. I have several questions in this regard: Could you please let me know how to read the following ...
1
vote
1answer
39 views

Ubuntu SDK SortFilterModel with variables

I'm developing an app for Ubuntu Touch. I have a large list of items in an xml file and access it using the XmlListModel. I would like to offer some filtering on the list (as it is very large). Is it ...
0
votes
1answer
192 views

How do I see examples on the ubuntu-sdk?

The Ubuntu developer website says: For a presentation of Ubuntu HTML5 widgets, check out the HTML5 Gallery App (installed by the ubuntu-html5-ui-toolkit-examples package). You can launch the ...
2
votes
1answer
27 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 ...
0
votes
1answer
27 views

U1db-Qt not working as expected in ListView (Ubuntu Touch App Development)

Recently, I've been trying to learn how to use the U1db Library (if that's what you call it), but it hasn't been working the way I expected it to work. Here is my code: import QtQuick 2.4 import ...
0
votes
1answer
38 views

ubuntu phone textfield displayed different

I am trying to build a QML application for Ubuntu phone. My form looks ok on screen (desktop), but when I put the app on the phone, the display is off. The borders around my test fields are not ...
0
votes
0answers
24 views

No ubuntu web app inspector

Been using Ubuntu 14.04 LTS release to do some development webapps and the web inspector was there as default. When installing ubuntu sdk on 15.04 and 15.10 there's no web inspector. How can i get it ...
0
votes
1answer
23 views

Automated review failure from store - online_accounts

I'm trying to upload a package to the Ubuntu Software Store that uses Online Accounts. However, it keeps failing automated review with errors like: No JSON object could be decoded. Value: "ERROR: ...
3
votes
1answer
214 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.