Questions tagged [application-development]
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.
1,918
questions
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Why does my app not load the translation files of the lib
I have an click app that depend on some lib,
and i have package that lib in the click package.
the lib loaded well. but the translations file (.mo) are not founded.
my click file free look like this: ...
- 126
2
votes
2
answers
86
views
Why PageStack won't send property?
I have a basic code but it's impossible to send a property to an external page
This is my main.qml :
PageStack {
id: pageStack
Component.onCompleted: push(pageMain)
Page {
...
- 1,429
5
votes
1
answer
103
views
Is Juju a suitable tool for development as well as deployment?
One of the great conveniences I've found of using docker is that it allows me to guarantee the environment my code is running in is very similar, if not identical, to the environment it will run in ...
- 3,440
2
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0
answers
43
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Application rejected on myapps.developer.ubuntu.com. What can I do?
I submitted a desktop application on myapps.developer.ubuntu.com long time ago. But it was rejected today with the following reason:
This package submission process is now deprecated.
To provide my ...
0
votes
1
answer
148
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 ...
- 23
1
vote
1
answer
186
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
- 2,031
2
votes
2
answers
716
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", "...
- 21
1
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1
answer
7k
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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 ...
2
votes
0
answers
151
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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: ...
- 2,031
0
votes
1
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62
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 ...
1
vote
1
answer
176
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. ...
- 11
2
votes
2
answers
268
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 ...
- 23
2
votes
2
answers
1k
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 ...
- 7,919
0
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1
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628
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'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 {
...
- 126
1
vote
1
answer
549
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 ...
- 17.5k
0
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80
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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?
2
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3
answers
1k
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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 ...
- 23
3
votes
1
answer
1k
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 ...
6
votes
1
answer
66
views
Ubuntu Touch HTML5 app Orientation lock
Can somebody tell me how can I fix my HTML 5 app into portrait mode only?
- 61
1
vote
1
answer
4k
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
...
- 81
3
votes
2
answers
5k
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 ...
- 324
0
votes
1
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125
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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 ...
- 123
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1
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1k
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 ...
- 327
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1
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428
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 "ubuntu-...
- 2,031
0
votes
1
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82
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 ...
- 1,223
0
votes
1
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140
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 ...
- 1
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1
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114
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 ...
- 15.5k
2
votes
1
answer
309
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 ...
- 79
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0
answers
130
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 ...
- 143
4
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1
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315
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 ...
- 303
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1
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104
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 ...
- 111
2
votes
1
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382
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
votes
1
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217
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 ...
- 14.8k
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321
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 keypress....
- 866
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1
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758
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
...
- 33
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1
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181
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?
- 3,616
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2
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301
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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 ...
- 975
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0
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59
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 ...
- 15.7k
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2
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1k
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 5....
- 3,616
0
votes
1
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1k
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 ?
- 2,031
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1
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510
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:
file:///home/user/camera-app/camera-app.dev/camera-...
- 3,616
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87
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
votes
1
answer
652
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 ...
user364819
2
votes
0
answers
165
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 ...
0
votes
1
answer
2k
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?
- 160
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0
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82
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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 ...
- 398
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1
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579
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 ...
- 155
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vote
2
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323
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 ...
- 398
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56
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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.
- 1,165
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76
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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 ...
