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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124 views

can't deploy application to emulator : SFTP initialization failed: Server could not start SFTP subsystem

Such error I got when try to run my app in emulator : 11:01:33: Connecting to device... 11:01:34: SFTP initialization failed: Server could not start SFTP subsystem. 11:01:34: Deploy step failed. ...
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1answer
81 views

QML WebView does not want to start in Emulator

When opening WebView in emulator I got this: LaunchProcess: failed to execvp: /usr/lib/arm-linux-gnueabihf/oxide-qt/chrome-sandbox
2
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1answer
319 views

Python app crash after sending command “GPIO.setup( 7, GPIO.OUT)”?

Python app crash after sending command "GPIO.setup( 7, GPIO.OUT)" !!! Action step: pi@rp:~$ python3 Python 3.4.3 (default, Mar 26 2015, 23:09:09) [GCC 4.9.2] on linux Type "help", "copyright", ...
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1answer
2k views

Visual Studio alternative for Ubuntu? [duplicate]

I write programs in Windows casually (apps like notepad, web-browser etc.). But I don't see a good alternative available. I have used Mono but it is not one bit like Visual Studio. I am having a tough ...
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0answers
84 views

Can't start ubuntu-filemanager-app in emulator

I downloaded ubuntu-filemanager-app opened the project in UbuntuSDK and want to run it in Emulator , but I get this error: 23:49:37: Running steps for project ubuntu-filemanager-app... 23:49:37: ...
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1answer
40 views

Quickly fails to package help pages

I have been working on making a program (jekyll-helper) using Quickly and a while ago I worked on adding some content to the default help pages. I tested out open the help pages in the program while ...
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1answer
48 views

Installing development libraries on 14.04

I am trying to build some application for both amd64 and i386 architectures. Host architecture is amd64. So i compile and link with -m32. Compilation is done ok but linker cannot find libraries. ...
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2answers
104 views

File access outside application directory

I want to know is it possible to access files outside the application directory? e.g. /home/phablet, /media, etc. Okay, so precisely I want to use QDir and QFile to read the folders and the files ...
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2answers
277 views

How can I create a debian package for MediaWiki 1.25.1?

I would like to create an easily installable debian package (.deb file) for MediaWiki 1.25.1 as I know from personal experience that for web programming noobs like myself, installing MediaWiki can ...
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1answer
86 views

'ReferenceError: contents is not defined' with U1db

I'm trying to read information from a database of U1db. I encountered this error 'ReferenceError: contents is not defined' Here's my code: import U1db 1.0 as U1db U1db.Database { ...
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1answer
212 views

Ubuntu Touch app development [closed]

I would like to try out Ubuntu Touch app development, and I have a few questions that hopefully some of you will be able to answer... I'm intending to use HTML5. - Do applications have to undergo a ...
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1answer
31 views

Migrating from Microsoft VB6 and SQLite to Linux [duplicate]

I am doing business programming and wish to migrate to Umbuntu. What would be a similar development environment in Umbuntu?
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3answers
564 views

How can open-source programs make money? [closed]

I am new to Ubuntu and I am really interested in making software that can work on it and I would like to make profit from these software. How can I make money from making software for Ubuntu if the ...
3
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1answer
81 views

Where should libraries be located for the development process?

With the SDL libraries for example, one would have to point to the headers at the beginning of their code, like so: #include <SDL/SDL.h> And, when compiling with GCC for example the library ...
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1answer
393 views

QML Blinking animation

I need a blinking animation for an icon, I did this so far: Icon{ id: bigLike name: "like" color: "white" opacity: 0 ...
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2answers
523 views

How to make an application use local shared library instead of the system one

I have qtcreator installed using the qt online installer. It ships which its own version of qt library. The qt library are also installed in the system directories, but those are older. I have ...
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1answer
90 views

Invoicing Visual Basic software replacement or web application?

I have a pc that is still fairly powerful but with Windows XP (Pentium 4 3Ghz 4 Gb Ram). It is used by someone who is not computer expert (I would say a really basic user) only for browsing and ...
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1answer
84 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 ...
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1answer
262 views

Can't run QML app with C++ plugin (cmake) in emulator

I am using Ubuntu 15.04. I created a project QML app with C++ plugin (cmake), and then I want to start it. In desktop it's running fine. When I tried to start it in emulator I got: Framework ...
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0answers
27 views

When Ubuntu Software Center review my commercial applications [duplicate]

15 days ago I posted My application on the Ubuntu Software Center and am still waiting for review. Does anyone know when they will be following the approval of the application? My application is ...
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1answer
52 views

Is PPA still the only way to publish free open source app for Ubuntu Desktop?

There is a lot of contradicting information about publishing for Desktop. Some sources say that from 14.10 onwards Click packages also for Desktop can be submitted to USC. Other sources say that Click ...
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1answer
96 views

Unity8 Development install troubleshooting

First attempt at getting into development with Unity and in a Linux box. I was able to pull down the trunk and (I think) build its dependancies, but it doesn't feel like I've done this right and I ...
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1answer
43 views

How to make a custom button provide haptic feedback

I've got a custom round button that is derived from Ubuntu.Components.AbstractButton. Looking at the documentation, it states that: All components deriving from this class support haptic feedback ...
2
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1answer
157 views

Installing a program on a ubuntu touch phone

I searched on the website but didn't found an answer. I heard a lot that developing an application with C, C++ or anything else. Is it really possible ? What I mean : Imagine I develop a program in ...
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0answers
88 views

Custom “widgets” in html5 app for Ubuntu Phone

I've reviewed the documentation here and that helps to get started, but leaves me with a question of how to make a reusable custom html widget. For example, if I have a list item which contains a ...
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1answer
225 views

Remove non-listed click target

I want to write an app for Ubuntu Touch and test it on my Aquaris BQ 4.5 Ubuntu Edition. I failed big time setting it up though and now ended up having no according click target: When I go to the ...
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1answer
89 views

Will it be possible to develop ubuntu phone apps on ubuntu phones?

I was hoping that the ubuntu phone would bring true convergence of desktop and mobile operating systems and allow me to ditch all my other devices. I'm a developer and I want to create native ...
2
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1answer
249 views

Howto prevent screen idle/dimming in an Ubuntu Phone html5 app

I am developing an Ubuntu Phone html 5 application and I want to prevent the screen from dimming and locking the phone if there are no user interaction in the screen. (The application is showing an ...
0
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1answer
65 views

publish gambas3 programs

I have been using Gambas3 to write some User interfaces, and Ive really enjoyed the simplicity, and speed at which I can write GUIs with. Now i am ready to publish some software. I tried walking ...
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1answer
205 views

How to use Apache Cordova API in Ubuntu SDK

I created an HTML5 app in Ubuntu-SDK. Therefore I went to New Project->Ubuntu->HTML5 App. The app is already working but now I wanted to use vibration to give the user a feedback to a certain ...
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1answer
249 views

QML app with C++ plugin (cmake) subdirectory

I am developing an Ubuntu Phone application "QML app with C++ plugin (cmake)" but I have so many qml files so I want to separate them by functionality ApplicationName CMakeListes.txt .. app ...
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1answer
69 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?
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2answers
130 views

is there any app for backup/ restore installed apps in ubuntu?

For some reasons, you will need to do an ubuntu fresh install on the same PC/laptop by re-size partitions, or in other PCs/ laptops. Installation is OK, but it spends a lot of time for installing apps ...
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0answers
23 views

How do I configure the Ubuntu SDK to use a proxy cache?

The Ubuntu SDK sets up emulators for me, which seems to involve a call to click chroot which then runs debootstrap. How do I pass through my proxy server settings through to debootstrap? I want to do ...
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1answer
183 views

Qt Multimedia doesn't seem to work on Touch

Using Qt package 'Multimedia' to get cameras on the bq phone: QList<QCameraInfo> cameras = QCameraInfo::availableCameras(); cameras.size() always returns zero. Host 14.04, target 14.10, Qt ...
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1answer
89 views

File storage location for ubuntu application

In my application I plan to store files locally ( exported files ) and import files which user copy via USB to the disk. Where to locate such application files ? Is there some recomendation ?
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1answer
320 views

Compiling and running camera-app with Ubuntu SDK

Got camera-app, revno: 542. Host - 14.04, Ubuntu SDK. Target Desktop getting runtime qml error when trying to run the 'camera' run configuration: ...
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0answers
62 views

Can ubuntu touch scopes access the dbus at any time?

I was thinking of writing a scope for downloading music and video content from its sources, and since there is not yet a UI for the ubuntu download manager daemon, it seems like there is "no" ...
2
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1answer
97 views

How to solve Bazaar error bzr: ERROR: unknown command “*****”?

I am following this guide to configure bazaar, but I have encountered a small problem, it says to type in the command: bzr launchpad-login subgenius And to replace launchpad-login with your ...
2
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0answers
109 views

Ubuntu Touch HTML5 How to create a fixed header?

How can one create a fixed header when creating a Ubuntu Touch Application with the HTML5 SDK? The api documentation does not offer any help and I could not find any HTML5 examples that were using a ...
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1answer
343 views

Can I use Java to develop gui for ubuntu

I'm developing a GUI for Ubuntu using Quickly tool. I'm not familiar with python so can I use Java/C++/C# programming languages?
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0answers
56 views

Ubuntu touch HTML 5 how to create complex headers?

I am trying to build a small html5 app for Ubuntu touch. In general it is rather difficult to handle the html5 code. The design guide gives a lot of suggestions how to build an app, but neither the ...
0
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1answer
94 views

UbuntuListView ListItem.Expandable example?

I am playing with the Expandable ListItem components: UbuntuListView { id: myList model: 2 delegate: ListItem.Expandable { expandedHeight: units.gu(20) Label { text: "Expand me" } ...
0
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1answer
204 views

Dynamic object creation im QML

I am new to QML and would like to understand how object creation works when splitting code over different files (as it feels like a good code practice). I know I can call property of an item within ...
0
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2answers
219 views

Ubuntu touch how to get HTML 5 app template running?

I have successfully installed the ubuntu sdk on my Ubuntu 14.04LTS, I also have installed a desktop Kit and an UbuntuSDK for i386. Afterwards I created a new html5 app. The template given works with ...
0
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1answer
53 views

It it possible to use apps for mobile? [duplicate]

It is said that mobile OS Android is originated from Linux. It the statement true? And Can I use apps built for Android OS in Ubuntu? Thank you. HELLOVENUS Fantagio.
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1answer
66 views

Ubuntu SDK - Example clocks wont run in emulator

I'm trying to start the example "clocks" from the ubuntu SDK in the phone emulator. After adding the emulated device, booting it and pressing play nothing happens. How can I found out what is going ...
0
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1answer
436 views

How to install uber APP in ubunto?

I want to install UBER APP in my laptop (OS is Ubuntu). I checked that: Uber is available for download on: iPhone (iOS 7 or newer) Android (Jelly Bean or newer) BlackBerry (BB OS 7 only) Windows ...
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2answers
336 views

How to run two 'python manage.py runserver' commands of two different folder in a single terminal

I have two different python project placed in different folder (project 1 in pydir1 directory, project 2 in pydir2 directory). Every time, I need to open two new terminal and run the python manage.py ...
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1answer
73 views

How can I publish my deb files to custom url?

I've seen that some software can be deployed a "deb url" like deb http://dl.google.com/linux/chrome/deb/ stable main The "deb url" could be added via: sudo add-apt-repository "deb ...