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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Ubuntu SDK emulator starts up but the Devices tab says “The device is currently booting…”

I'm trying to setup an Ubuntu emulated device with a click package. But even after the emulator starts up the devices tab show that the device is booting. Pressing the refresh button does not help ...
29
votes
3answers
74k views

How can I install Qt 5.x on 12.04 LTS?

If you want to develop with QML 2.0 and Qt5, the base packages don't seem to exist in repository for 12.04. What PPA should I add? Is it a binary installer? a compile the toolkit yourself? Those ...
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vote
3answers
293 views

How to run an action when clicking on an appindicator

I'm looking at writing a simple app indicator and I need it to update it's information whenever it's clicked on to open the menu. Is there any kind of on_click action thing? Let me rephrase it then: ...
-1
votes
0answers
8 views

Ubuntu SDK First attempt - first fail

I have installed the sdk and follow the steps from Ubuntu and found that I cannot run even the first application. Any of you can help with this issue? In the compile window I have this mesage: ...
0
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1answer
12 views

how to install ubuntu-SDK in ubuntu 14.04 64bit?

i would like to install Ubuntu-SDK in my system.i tried to follow this site this site but i getting the error called package-dependency.i think that link is old.so any body know another way to ...
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0answers
19 views

development on Ubuntu and Linux in general [duplicate]

I'm from under windows development world. There is a Visual studio there for C and C++ development. In visual studio there is a good UI and I can put breakpoints in the code of the project and watch ...
-1
votes
0answers
27 views

Ideal language & IDE for creating native desktop Ubuntu apps [on hold]

I'm in process of creating a native desktop application for Ubuntu (targeting x86 specifically). I'm considering Vala and QML (with C++ backend). As the app I'm planning to make requires strong ...
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0answers
24 views

How to install a python script as an application

I have been trying to create a deb package for my python script following these steps. My myscript.py contains a simple frame. #!/usr/bin/env python import wx app = wx.App(False) frame = ...
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votes
1answer
31 views

I have some philosophical question about the free software movement. [closed]

Why would people want to work for free? I mean, I specialize a skill to earn something out from it. Right? Actually, from my experiences of PC (microsoft windows) using, I never had to spend a ...
41
votes
3answers
30k 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?
1
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0answers
32 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
817 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 ...
1
vote
1answer
31 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
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0answers
15 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 ...
0
votes
0answers
56 views

How to test a javascript scope on a real phone?

I'm developing my first scope, hoping to enter the scopes showdown contest. I've decided to make a javascript scope. I'm having fun with the SDK and following along the javascript scopes tutorial at ...
0
votes
1answer
155 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.
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0answers
28 views

How to create and build snappy apps ?

I am very new to Ubuntu application development. I have to develop an application for snappy Ubuntu. Now I am confused about how to do it? So here are my few questions. Which language should I use ...
0
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0answers
39 views

JavaScript scope online accounts - OnlineAccountClient error

I'm trying to run a Unity JavaScript scope which uses online accounts on Ubuntu 15.10 on the Unity Scopes Tool, but I get an error when using the OnlineAccountClient class. I followed the Online ...
0
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0answers
11 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
28 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
68 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
30 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 ...
0
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0answers
43 views

Android Studio - empty project after importing from Github

I have a big problem with android studio. Now I'm working on a project and I have to pair the repository from github to android studio. The connection and the clone of the folder went well. I can't ...
8
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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.
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votes
0answers
21 views

Ubuntu freezes with Qt App

Im trying to develop a Qt app in Ubuntu and sometimes (no different set of loaded resources between runs, and just Qt resources, like QThreads or QtGui), when running it, it just freezes the system... ...
6
votes
3answers
5k 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 ...
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0answers
20 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 ...
0
votes
1answer
112 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: ...
14
votes
0answers
330 views

How to develop a System Indicator for Unity?

This is not a duplicate of How to create Unity indicators?. I'm looking for system indicator not application indicator. Backgound: From these two questions: How do I add or manipulate ...
0
votes
1answer
7 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 ...
0
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0answers
31 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
116 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 ...
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0answers
41 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 ...
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0answers
33 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 ...
0
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0answers
30 views

How to get the name of connected ios phone in Linux using command

How to get the name of connected ios device name in Linux, or c++ programming. basically, I use the Qt in Linux. and I want to get the name of the connected device name. after a searching in google we ...
3
votes
0answers
121 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
2answers
44 views

unable to locate mingw32

I'm trying to compile from source everything I need in order to build Ubuntu touch for my Samsung Galaxy Tab 4. I used to guide from the Ubuntu web site and when I enter this command: $ sudo apt-get ...
0
votes
1answer
37 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
98 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
2answers
120 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: ...
1
vote
1answer
26 views

Cannot git clone Apparmor kernel patches

Whenever I enter (git clone git://kernel.ubuntu.com/jj/ubuntu-utopic.git) into the terminal, I get this output: Cloning into 'ubuntu-utopic'... fatal: Could not read from remote repository. Please ...
1
vote
1answer
36 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
819 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
26 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
24 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 ...
10
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
10 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
177 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
13 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
15 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? ...