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.
329
questions with no upvoted or accepted answers
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How to get GTK4 in Ubuntu 20.04?
GTK4 was released quite recently, and the demo codes don't run in Ubuntu 20.04 because GTK4 is not available on the system.
Traceback (most recent call last):
File "gtkapp.py", line 3, in &...
7
votes
1
answer
1k
views
What are the design guidelines for appindicator icons?
I am creating a Unity AppIndicator using Python + PyGObject, but I wish for it's icon to be in standard Ubuntu style. Where can I find appropriate guidelines for using colours (or is it just white/...
6
votes
1
answer
73
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Assistive Technology for Hands Free Use
I'm looking for packages compatible with Ubuntu 20.04 LTS that facilitate using the computer without hands.
Examples include:
eye gaze tracking mouse software
dictation software capable of coding
...
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?
5
votes
1
answer
2k
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How to use Arguments in QML without getting qmlscene arguments
I'm trying to write a QML application to be launched by qmlscene. I want this to accept arguments, so I'm using the Arguments object. However, this gets the arguments passed to qmlscene as well as ...
4
votes
0
answers
1k
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Add an application to notification tray in GNOME
I am developing a Linux application and I want an icon for the application to show up in the notification tray which is at bottom-left in GNOME.
Image of notification tray in GNOME:
How can I ...
4
votes
0
answers
57
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What apparmor policy do I need in my click package for offline html5 application?
Hello all you knowledgeable people.
I have created an ubuntu HTML5 application.
A simple, offline application.
You can browse it on github:
https://github.com/BigET/ResistorCalculator
In order for ...
4
votes
0
answers
139
views
Documentation / guides for offline ubuntu phone scopes
I've been working on an Ubuntu phone scope that is NOT connecting to the internet, it is retrieving local results.
I am having difficulty, which is mostly due to not having a guide for how to write a ...
4
votes
1
answer
81
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Ubuntu Apps Developer Team
I'm writing on behalf of getting answers for a few questions.
I have a team and we have to develop apps for Ubuntu Software Centre.
I am the team leader and I have two members and we are growing fast,...
4
votes
1
answer
82
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Guidelines for packaging web app
For a while now, I'm trying to build an Ubuntu package for PPA upload, and facing all sort of issues understanding bzr dh-make and such. The package is web application (php-based). Most packaging ...
4
votes
0
answers
1k
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QML app icon not effective when called from app.setWindowIcon()
I've a Qt5/QML hybrid app built with Ubuntu Touch SDK. I'm trying to set the app icon for it, but without success. Code looks like this:
int main(int argc, char *argv[])
{
QApplication app(argc, ...
4
votes
1
answer
2k
views
How to get QML syntax highlighting in gedit?
QML files opened with gedit don't have syntax highlighting. Is there a package providing a gtksourceview lang.spec file for QML? If not, has anyone written a lang.spec than can be installed locally?
4
votes
1
answer
316
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How to create and submit package for Qt application
I have an application that I developed in Qt and Ubuntu. Its primary target is Windows but I prefer working in Ubuntu for all sorts of obvious reasons, so I rebuild it using Qt under XP and create an ...
3
votes
0
answers
2k
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How to fix Android Studio installation and Gradle errors?
I have installed Android Studio with the idea of developing applications with Cordova and Phonegap thanks to the help of my partner @karel who showed me this question:
How to install Android Studio on ...
3
votes
0
answers
1k
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Qt error trying to install quiteinsane gimp plugin
I am trying to install the quiteinsane gimp plugin on Ubuntu 16.04.
https://sourceforge.net/projects/quiteinsane/
I am getting this error:
checking for Qt... configure: error: Qt (>= Qt 2.2.2) (...
3
votes
0
answers
97
views
How to create Ubuntu Applications
What should I use to create apps for the Ubuntu Software center? I have Ubuntu 16.04 and qtCreator keeps crashing for me (even 4.3.0). I can't find a good place to start for creating apps for the ...
3
votes
0
answers
57
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Ubuntu Component Showcase not working in 16.04
I'm working through this tutorial, but I'm unable to find the Component Showcase QML file using the provided path (/usr/lib/ubuntu-ui-toolkit/examples/ubuntu-ui-toolkit-gallery/ubuntu-ui-toolkit-...
3
votes
0
answers
135
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How can i build an ubuntu touch app only in c++ (without qml) and with cmake
is there a way to configure a cmake file for building a click-package without qml.
i like to start programming in the main function with QApplication and only my own window class.
my goal is to write ...
3
votes
0
answers
94
views
Simple Javascript Scope HowTo and Examples
I am trying to develop a simple Scope for Ubuntu Phone (BQ 4.5 particularly). The scope's task should be just to display (and refresh) one web page directly in the scope, i.e. not to open a separate "...
3
votes
0
answers
535
views
Ubuntu Xenial: perf doesn't demangle C++ symbols
Linux perf-tools don't seem to work as expected on Ubuntu (16.04). C++ symbols don't get unmangled, I only see garbled stuff like "_afki34334ldfjkdasf_dfkj".
Note that I have compiled the program and ...
3
votes
0
answers
636
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 this ...
3
votes
0
answers
104
views
Ubuntu SDK Error --
When I go to make a Kit after the SDK wizard loads, I am presented with this error, and if I proceed I see it again while attempting to created a device emulator.
Error creating textual ...
3
votes
1
answer
396
views
AppArmor denial when trying to open file using content hub
When trying to open a file using content hub using C++ I get these errors:
Opening with peer com.ubuntu.music_music_2.1.857
Sdk-Launcher> Application was resumed
Sdk-Launcher> There has been a ...
3
votes
0
answers
220
views
Cannot launch app in Ubuntu Device
I have just installed the Ubuntu SDK on an Ubuntu 14.10 system (a virtual 32-bit install). I have also installed Ubuntu Touch on a 2013 Nexus 7. The device is seen by the host and the device is ...
3
votes
0
answers
81
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 ...
3
votes
1
answer
445
views
Internationalization of QML application using i18n
Does someone know all the steps needed to have the apps translated in multiple languages?
I am using in my QML files i18n.tr() , and such words I need to translate
I performed below steps ( ~/...
3
votes
0
answers
183
views
FreshBooks Online Account
I'm developing an application that connects to FreshBook's API. I can either integrate the account authentication process within my application, or I can develop an Online Account that could be used ...
3
votes
1
answer
430
views
Qt creator does not work correctly after installing ubuntu sdk
I installed qt-sdk before installing ubuntu-sdk on ubuntu 12.04. When the Develop, Examples, or Tutorials link on the welcome page is clicked it creates inactive windows and cannot close it normally. ...
3
votes
0
answers
1k
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TypeError: Cannot call method 'hasOwnProperty' of null, while creating a QMLscene window
I am trying to make a simple Ubuntu Touch web application with Qt Creator. I have set up a new project according to the tutorial and committed the files to Bazaar. I have set a url instead of the ...
3
votes
1
answer
1k
views
Receiving drag events in a WebView in a QML application
I'm working on an app using QML and the Ubuntu SDK. One of the Pages contains a WebView. While the WebView receives click events just fine, it doesn't receive drag events, as I would like it to.
I ...
3
votes
1
answer
460
views
Get sensor values Ubuntu Touch
I'm new to Ubuntu applications and I'm trying to make an application for Ubuntu Touch that reads the values from the sensors (Accelerometer, Gyroscope,...) but I don't know where to begin. Which ...
3
votes
1
answer
1k
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(QML) Scroll multiple listviews
Is possible to scroll multiple Listviews together in qml??
this was my attempt:
Flickable {
id: scoreflick
anchors.top: namesrow.bottom
anchors.left: ...
3
votes
0
answers
694
views
Kinect + Webcam - Bandwidth issue
I am making an application on Ubuntu 12.04 and ROS Fuerte (Robot Operating System) using the Microsoft Kinect sensor and a logitech webcam. Both work perfectly fine independently. For information I ...
3
votes
0
answers
791
views
How do I get high resolution icons in Unity for my application without a .desktop file?
I am trying to fix a problem I found with a Java application. It has a too low res icon. After reading the source of it I modified it to have a bigger icon. SWT uses the gtk_window_set_icon() function ...
3
votes
0
answers
360
views
Python Access Pidgin Data Structure by Dbus
I recentely started to program in Python and making a script/plugin for Pidgin,i need to access PurpleConversationUiOps and use the has_focus field,based in some examples in documentation of Pidgin i ...
3
votes
0
answers
192
views
How to get Yelp to open the docs?
quickly tutorial
Result: An empty Yelp window with the XML file opened in gedit.
yelp /usr/share/quickly/templates/ubuntu-application/help/tutorial.xml --> Exactly the same problem.
Worked fine a ...
3
votes
2
answers
1k
views
Will it be possible to create apps/games in Java SE or Java ME on new Ubuntu phones?
Will it be possible to create apps/games in Java SE or Java ME on new Ubuntu phones?
2
votes
0
answers
2k
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How do I resolve "X Error of failed request: GLXBadFBConfig" when installing iTunes using wine?
I installed wine in order to install iTunes. The iTunes icon is on the desktop but it won't open. with wine64 explorer I see iTunes.exe, however when clicking on it the following message in the ...
2
votes
2
answers
283
views
Offline commandline Thesaurus?
Online command-line thesaurus?
This here has answers for an Online thesaurus. I need an offline thesaurus for the commandline. If there is none, is there a library available in the repos containing ...
2
votes
0
answers
64
views
Ubuntu kept old partitions after reinstallation. How can I reallocate the space?
I am new to Ubuntu and after failing to resolve some package management problems, I'm trying to reinstall it. I'm using Windows 7 and Ubuntu 16.04 (dual boot).
Now after the attempted reinstallation ...
2
votes
0
answers
184
views
Can I access network-manager.nmcli from another snap?
I need to be able to access network-manager.nmcli command from my snap. I have not found a way to accomplish this with the current core or network-manager interfaces. Is the only solution that a slot ...
2
votes
0
answers
263
views
umake android proxy error
When I run in Ubuntu 16.10:
$ umake android --accept-license
ERROR: https://developer.android.com/sdk/index.html couldn't finish download: HTTPSConnectionPool(host='developer.android.com', port=443): ...
2
votes
0
answers
228
views
Pyotherside for Ubuntu Touch Mendeley App
I am an owner of both the BQ M10 Ubuntu Tablet and the BQ Aquaris E4.5 Ubuntu Phone and I am very unhappy with the absence of a Mendeley app for these devices. For this reason, I want to code it ...
2
votes
0
answers
687
views
Ubuntu-SDK-IDE: QXcbConnection: Could not connect to display
In the case applications executed from the Ubuntu SDK IDE in a LXD container can not connect to the X Server, the X11 socket in /tmp/.X11-unix was probably deleted and the container can not access the ...
2
votes
1
answer
5k
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Problem installing snapd
I like to install snapd
but my computer say message like this:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package snapd
how ...
2
votes
0
answers
65
views
I want to compile apps for Ubuntu-Touch. What are some good resources?
I have an Acquarius M10. I want to try to compile x11 apps for use on my tablet. I am especially thinking of things like xournal.
What are some good resources for me to start learning about how to do ...
2
votes
0
answers
385
views
Build an Ionic application for ubuntu phone as click package
Hello fellows I have the following application:
https://github.com/kawai-developers/faster
And I try to build it as a scope for ubuntu phone
I managed to add the platfrom for ubuntu with the ...
2
votes
0
answers
62
views
Ubuntu phone - how to store data when writing HTML5 app - preferred way
I started creating a simple organizing app for myself, and hit a brick fairly quickly. Wanted to have an XML list of things that would be read and updated by a HTML form.
Now I came through ...
2
votes
1
answer
2k
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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
...
2
votes
1
answer
107
views
What does security_policy_version_matches_framework mean?
When uploading my click app to the store, I get an error in the automated review feedback:
1.2 != 1.3 (ubuntu-sdk-15.04) security_policy_version_matches_framework
What does this mean, and how do I ...