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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12
votes
2answers
11k 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 ...
0
votes
1answer
20 views

How can I save the CurrentItem of Picker in QML?

Helo, I defined in mainView the following functions: property var db: null function openDB() { if(db !== null) return; // db = LocalStorage.openDatabaseSync(identifier, version, ...
2
votes
1answer
82 views
+50

How to handle QML application shutdown?

I need to persist the state of a QML application when it shuts down, and to read it when the application loads. I tried using Component.onCompleted and Component.onDestruction inside the MainView's ...
0
votes
1answer
41 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
votes
0answers
21 views

Which click framework should I target?

I am developing some apps for Ubuntu Touch, and one part that I am confused on is how the click build targets work. Which one should I target? Do they follow the same support schedule as the rest of ...
18
votes
2answers
7k views

How can I get started with developing apps for Ubuntu Touch? [closed]

I am interested in trying the new Ubuntu for phones OS development. (I am not an Ubuntu developer, I am new to Ubuntu. Impressed by the Ubuntu Touch preview, I got interested in learning how to ...
1
vote
1answer
50 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
2answers
36 views

It's possible to develop ubuntu touch app in C++ without using QML?

I am looking for way to develop ubuntu touch app using only C/C++. I want to know what are other options, maybe GTK+ can be used ? or QT Widget ? without sacrificing display touch capabilities ? And ...
0
votes
1answer
27 views

How to keep an UbuntuListView between its boundaries?

I have an UbuntuListView in a QML application for Ubuntu Touch. Above it, there's another component - a TextField. The initial position of the list looks good. Also, if the list is smaller than the ...
0
votes
0answers
10 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 ...
8
votes
2answers
8k views

How to use Sublime Text 2 as Quickly default editor?

I used this answer to change the editor used with quickly and it worked, however now,when I type quickly edit the command line stays on the open and does not allow me to enter other commands as long ...
3
votes
1answer
782 views

Will location data be available to ubuntu mobile apps?

Is Ubuntu planning to make location data available to mobile applications? If so, can you give any pointers to an API that I could use?
0
votes
0answers
5 views

looking to reinstall ZTE P7431 image

i´ ve been looking to set up my invironment to work on an android device which infact does n´t boots up, Ive been checking the android out with a root program, and rasy adb to check out it´s files ...
0
votes
1answer
81 views

How do I animate using javascript and qml?

I've searched the internet and I can't find a simple guide how to animate ui objects in Ubuntu SDK. Can someone please explain the different parts needed and how they work together?
6
votes
4answers
4k views

How do I get images to appear on buttons in Glade Designer?

Not sure if this is a bug or just a very annoying feature, but I can't get an image to appear on any of my buttons in Glade Designer. Is there some property I need to change in order to force it ...
1
vote
1answer
36 views

Web App Generator

I encounter an error message each time I try to submit a web app for mobile using the Ubuntu Web App generator. Am I doing something wrong? Or is there an issue with it right now? Regards, Antoine
3
votes
0answers
249 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 + ...
0
votes
0answers
12 views

Publish button on Ubuntu-SDK not working

I am new to Ubuntu development. I am developing an application using HTML5. Its all set and running as required. But when I click on Publish button, nothing happens and screen freezes there. I am ...
0
votes
0answers
23 views

Error when running ubuntu phone emulator

I can launch the emulator in the devices tab, without any error. But when i try to run any html5 program/example, in the application output shows Warning: Permanently added '[127.0.0.1]:10000' (RSA) ...
-1
votes
2answers
1k views

How to uninstall firefox developer edition in ubuntu

How do I completely uninstall Firefox developer edition, I tried by uninstalling from Ubuntu software center, it gets uninstalled but if I re install firefox then again its switching to Firefox ...
0
votes
0answers
55 views

How to compile C/C++ applications for the Ubuntu BQ E4.5?

I run on my BQ E4.5 below the HOME of phablet in a jail a Linux based on vivid for ARMHF which is build as: $ mkdir myRoot $ cd myRoot $ sudo tar xzf ../vivid-preinstalled-touch-armhf.tar.gz $ sudo ...
0
votes
1answer
28 views

Why does click package validation fail?

I'm trying to publish an app for Ubuntu touch, but I can't get past the validation phase. I'm using Ubuntu SDK. The current build configuration is for device (armhf). I was able to run the app on the ...
0
votes
0answers
12 views

Use Ubuntu Lap(desk)top+UMTS-HSPA datamodem as SMARTPHONE

I have been advised to ask my question in Lanuchpad here too. I find that Ubuntu is focussing particularly into Smartphones / Calling Tablets. Very well. But I want to use our existing ...
28
votes
3answers
63k 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 ...
0
votes
0answers
31 views

Download .click package

I've had some problem with my computer and, sadly, I lost all .click packages I've developed. I would like to download them but I don't know how. In myapps page on ubuntu.com ( ...
0
votes
1answer
46 views

Python GTK3 keyboard accelerators

I'm working on creating an application for Ubuntu using Python3 and Gtk3. I'm trying to add keyboard accelerators to the program but unfortunately I keep running into problems. This is my code atm: ...
0
votes
1answer
22 views

How to delete from an UbuntuListView?

I'm trying to learn how to use an UbuntuListView. Items will be added at runtime, but for demo I just hardcoded them. What I need is a way of removing existing list items. Here's my code and a ...
0
votes
0answers
26 views

How to keep model and view in sync for a QML List Item?

I have a list with multiple selection and a button. All list items are checked. When I click the button, I want the second item to become unchecked. I am also changing the displayed text (just for ...
1
vote
2answers
289 views

Ubuntu MX4 not detected on Ubuntu SDK

Just got hold of the Meizu MX4 which comes pre-installed with Ubuntu Touch. I have been using the Ubuntu SDK for some time now, today I tried to deploy a simple app onto the device. However, several ...
54
votes
13answers
9k views

What advantages does Ubuntu have over Windows as an environment for programming?

Why is writing a program in text files or via the terminal a better option (as I read) than using IDE(s) like Visual Studio on Windows? Do the features an IDE provides exist there (eg. showing ...
20
votes
2answers
14k views
-1
votes
0answers
24 views

Ubuntu SDK Design

OK, so i have a question, i don't know if it's me or others, but i would like to know when or is the design mode going to be fixed?? "import Ubuntu.Components 1.1" for example. I tried, the ...
2
votes
0answers
33 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.
1
vote
1answer
28 views

Opencv with ubuntu-sdk

I am trying to use OpenCV with ubuntu-sdk for an app. I am using the qml app with c++ using the cmake template, downloaded the opencv source in the modules folder and added at the ...
0
votes
0answers
20 views

Develop on Ubuntu Phone

Is it possible, and if so, how can I develop/run qml-apps using only my Ubuntu phone? As example I refer to the Terminal-IDE apps on android... I have tried the Terrarium app but that's only to ...
3
votes
1answer
447 views

Buttons in ubuntu touch toolbar

What is the code to have a toolbar with buttons when programing in QML with the Ubuntu Components Module. I want to make it so that when I swipe a finger from the bottom of the screen the toolbar ...
1
vote
0answers
19 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
1answer
63 views

Ubuntu SDK unable to start in Ubuntu 15.04

in Ubuntu 15.05 I installed Ubuntu SDK, but I can't start it. I installed in Terminal: sudo apt install qtcreator-plugin-ubuntu And all dependencies. 292 new installed When I try to start in the ...
0
votes
0answers
9 views

Ubuntu touch sdk and qmake

I have such structure in my project: core-lib desktop-client android-client ubuntu-client and so on... How do I specify in profile, which projects to include for builds? For example for ...
0
votes
1answer
38 views

Cannot start Qt Creator after updating to 15.04

My Qt Creator (from ubuntu-sdk) won't start after updating to 15.04. It gives this dialog after the window has opened: [3]+ Segmentation fault (core dumped) qtcreator Also I don't ...
0
votes
2answers
515 views

How to hide a GTK window in Python before call or os.system

So, I'm depeloping a Python/GTK app which, after showing an assistant, it hides the assistant's window and runs an external app. The problem is that window.hide() doesn't works if, after the command, ...
0
votes
1answer
144 views

How to open a browser when the TextEdit::onLinkActivated signal is received

I'd like to open a browser window to display the URL received by a TextEdit onLinkActivated signal. Is it possible to perform such call from the QML application?
86
votes
6answers
44k views

What is the best place to install user apps?

Occasionally I am installing application with something other than apt-get or the Package Manager. What is the "best practice" location for installing user apps? (/usr/bin/, /usr/local/bin/, /opt/, ...
1
vote
1answer
32 views

What is a good Bazaar cheat sheet for the most common tasks?

Plenty of documentation out there, but it seems to be either an introduction tutorial (aka not a cheat sheet), or a technical cheat sheet with too many commands (aka the manpage). Is there a good ...
0
votes
1answer
28 views

Ubuntu Scope with Framework 14.10 - Intltool

Recently, I want to create a scope project, but then I found the following error when running CMake: CMake Warning at CMakeLists.txt:26 (find_package): By not providing "FindIntltool.cmake" in ...
1
vote
1answer
45 views

Ubuntu SDK on Kubuntu

I plan to switch from Windows to Linux long term. I just installed my first Kubuntu (since I like Qt) system in a VirtualBox VM hosted in Windows to get familiar with that system (and Linux in ...
1
vote
1answer
34 views

Ubuntu Touch webapp icon

Why not change my webapp icon for 'ubuntu-touch' after updating? Apparently it is properly updated in the app store, but when I install it, no. I've created the icon following this guide >> ...
0
votes
0answers
108 views

No avds found by ./emulator -list-avds . Do i need to install avds? How to do so, if yes?

I have installed android SDK in /opt. When i run: cd /opt/Android/android-sdk-linux/tools sudo ./emulator -list-avds I do not get anything printed on terminal. But from Android Studio under SDK ...
0
votes
1answer
58 views

QtWebSockets not available on Ubuntu Touch

I'm developing an Ubuntu Touch application which communicates with a server using WebSockets. Qt offers its own API since version 5.3, which can be used from a QML file by adding import QtWebSockets ...
3
votes
2answers
145 views

Under the hood, what is Quickly made of?

under the hood, What is Quickly made of? It's a wrapper to python? It's a compiled language? It's portable? What about the architecture and the design?