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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3
votes
1answer
2k views

How to create charts in QML?

I'd like to add to my application a page with not only raw figures but also eye friendly charts to display data. Is there a native component or a third-party plugin I could use to create such ...
0
votes
1answer
186 views

Debian installer does not create desktop/launcher link

I have a Qt application that I want to deploy as a deb package. I have been reading so many sources, all slightly different - most of what I did follows this How To: preparing an application for ...
2
votes
1answer
336 views

Error when modifying rules file in debian packaging

Trying to get my debian packaging to work as I want, I modified the debian/rules file (showing line numbers) 12 %: 13 dh $@ 14 15 override_dh_install: 16 dh_install 17 install -m 644 "My ...
3
votes
2answers
377 views

QML - How to create QML Components properties so they can be set from JavaScript?

I am trying to create a component with certain properties I've set. The sounds location and name are given by a C++ function that is actually working because the console.log() shows so: qml: Adding ...
0
votes
0answers
11 views

Page Stack Component Depth to always remain visible?

Is this possible? Say you have a depth of 5 tabs, They appear and disappear as you click the header. I want them to always remain visible.
0
votes
1answer
87 views

Exporting LD_LIBRARY_PATH that contains spaces and special characters

Trying to deploy a Qt application on Ubuntu Directions from Qt site show how to allow the library dependencies to be loaded, by changing the LD_LIBRARY_PATH variable: #!/bin/sh appname=`basename $0 ...
1
vote
1answer
182 views

Can you do dictionaries in qml?

So for example: Item { id: sylvainLikesAnsweringMyQuestions property var myDict: {[key,value],[anotherKey,anotherValue]} }
1
vote
0answers
45 views

Qt-creator publish tab missing click part

I am trying step by step to write some simple tutorial Ubuntu apps using qt-creator. First I've chosen HTML5 App then after writing some hello code or even after doing nothing I've tried to create a ...
4
votes
3answers
1k views

How do you check if a property is undefined in qml?

How do you check if a property is undefined in qml? This is what I am trying to do: Button { id: myButton text: if (text === "undefined"){"default text"} }
0
votes
1answer
51 views

complete list of wowza ModuleBase events? [closed]

does anybody knows where I can find full list of events supported by Wowza ModuleBase class !? ex. onSessionCreate, onRTPSessionCreate, onAppStart, etc.. edit: I just realised that this question ...
2
votes
1answer
44 views

How to make sure a Row {} or Column {} does not contract when an item's visible: property is set to false?

This is a question about good coding practice with QML: How can I make sure that a Row {} or Column {} does not contract when one of its Item's visible: property is set to false? The current work ...
0
votes
0answers
21 views

How to contain the webapp to the correct website (ie UrlPatterns)

I'm making a few webapps but I can't contain the app in the correct website. The exec line is the following one : Exec=webapp-container --store-session-cookies \ ...
0
votes
0answers
192 views

Android Development in Eclipse

I am using ubuntu 14.04 . I have been trying to develop Android apps on it using Eclipse Juno which has inbuilt Android SDK in it. After setting up a new Virtual Device when I create a new project ...
1
vote
1answer
191 views

How do you use Q_INVOKABLE to access c++ functions in QML?

I am looking for the most simple and straightforward example. For my part; .h public: KTerminalDisplay(QQuickItem *parent = 0); ~KTerminalDisplay(); Q_INVOKABLE void setFontStyle(QString & s); ...
3
votes
1answer
250 views

What in the world is wrong with my Ubuntu Touch app?

I'm working on an Ubuntu Touch app that works flawlessly with qmlscene. However, when I attempt to run it on an actual device, I get a bunch of dots all over the portion of the screen dedicated to the ...
2
votes
1answer
33 views

What is the difference between bzr lp-propose and bzr lp-propose-merge?

What is the difference between bzr lp-propose and bzr lp-propose-merge? Do I have to provide the branch I wish to propose a merge to, or does it assume it for me?
1
vote
1answer
98 views

How to get filename from FileChooserButton in PyGTK?

I'm using Glade and PyGtk to develop an application. Currently I'm using a button under a toolbar to open files using this code: def on_openVideo_clicked(self, widget): dialog = ...
1
vote
1answer
74 views

In Ubuntu SDK, I can't test apps on my Nexus phone (Server Rejected Key)

I just made my first webapp for Ubuntu Touch with the Ubuntu SDK. If I test using deploy locally, it works fine. If I test on my device, it returns me : "-1: error: Could not connect to host: Server ...
4
votes
1answer
269 views

python GUI frameworks that support touch devices

Hello everyone I want to know what is the best GUI framework for python that supports touch I've been searching couple of hours and this are results which I found: PyQt5 I heard for Qt and I know ...
1
vote
1answer
34 views

How can I take a textbox text entry and make it a variable?

I am having trouble with Python and would like to have some help. I am making a apt GUI 'front-end' with a nice UI. def on_textbox_changed(self): self.instvar = ...
0
votes
1answer
26 views

Is there a benchmarking/monitoring tool that can be targetted towards running applications?

I am trying to fix a performance issue bug on one of the core apps, and I would like to know if there is any benchmarking or monitoring tool that I can use to compare my different branches use of CPU. ...
4
votes
1answer
97 views

What does the head: property do on Page{} in qml?

I have an app that I am trying to get the toolbar in the header to work. In the documentation I've noticed a property called head that seems to create and add items to the header toolbar. What is the ...
0
votes
1answer
72 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: ...
0
votes
0answers
32 views

How do I use the “QML Extension Library + Tabbed UI” option in the Ubuntu SDK?

Is there a tutorial for using the Extension Library project type? I haven't touched C++ in a long time, and I'm completely new to QT. I'm not looking for anything complex, just something like ...
0
votes
0answers
44 views

How to add command-lines to PyGTK application to run after executing .deb file?

I've just made a small application written in PyGTK using Quickly. Inside the application there are some functions which needs some other packages to be installed. For example I need "mencoder" to ...
1
vote
1answer
38 views

(QML) What does the “?” do in defining properties?

Popey { working: visible ? 100 } What does that "?" indicate in this example?
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0answers
50 views

building problem with boost after upgrading ubuntu

I have a code that i can build and everything was working until I decide to upgrade my version of ubuntu for the 14.04 one. Now I have this kind of error messages : ...
2
votes
0answers
34 views

How do I delete files that my app owns from QML?

My app imports files from ContentHub and saves them into ~/.local/share/applications/${myappid}/Pictures/ and I would like to be able to delete them when the user no longer wants them.
0
votes
0answers
82 views

Anybody know how to delete a file from QML without resorting to a C++ plugin?

Anybody know how to delete a file from QML without resorting to a C++ plugin? It should be possible to do in the folder that my app uses for data storage.
0
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0answers
20 views

How to export a tomcat project to Ubuntu

I implemented a tomcat project on Mac OS. Then I would like to export the project to Ubuntu 12.04 and deploy it. apache2, tomcat6 and other related packages have been installed to Ubuntu. How can ...
1
vote
1answer
79 views

Should we be upgrading away from ubuntu.components 0.1?

Should we be upgrading away from ubuntu.components 0.1 in our ubuntu applications? I am working on one of the core apps, and many were unsure as to whether the current library (1.1 I think) offers ...
1
vote
0answers
19 views

In the Ubuntu SDK, is there a way to view all global variables in current project?

In the Ubuntu SDK, is there a way to view all global variables in current project? Working on one of the core apps, and I want to figure out if any global variables have been defined for the current ...
3
votes
1answer
152 views

How to detect if GPS sources are enabled using QtPositioning in Ubuntu Touch?

I am using PositionSource to get the latitude and longitude of the user's location from the GPS data provided by Ubuntu Touch. However I need to detect if GPS has been enabled by the user. On reading ...
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vote
0answers
42 views

Installation of Meanings failed on Nexus 4

I'm doing a simple test with the tutorial app 'Meanings'. It's running fine in the emulator but fails if I try to install the 'click' package on the physical device. Executing: ...
0
votes
2answers
92 views

Qt Creator - auto code generation

I have Ubuntu-Sdk IDE and I am doing HTML5 Programming in Qt Creator IDE, it is working absolutely fine, but when i click on Ctrl + Space, Auto Code is not generating, Please let me know what can i do ...
0
votes
0answers
21 views

(QML) Which components do I want to invoke for notifcations and dialogues on Ubuntu Touch?

Now of course I can make any sort of notification or dialogue I want. However, I want to know what the Ubuntu Style guide recommends for notifications and dialogues. A notifcation could be: Song ...
0
votes
0answers
337 views

Installing Ubuntu touch on Samsung Note 10.1 and sony xperia z ultra

I intend to Install Ubuntu touch on Samsung Note 10.1 and sony xperia z ultra. I have seen few forums and haven't got a clear picture of what is working and what is not. I saw for note 10.1 there is ...
21
votes
1answer
595 views

How to lock ubuntu device orientation in portrait or landscape from user input?

I am working on a reader app to be used on Ubuntu-Touch. When reading books from the app it would be a helpful feature to lock the orientation in either portrait or landscape. This would be useful ...
0
votes
0answers
66 views

Why I can't open qml file?

I try to develop a very simple application in QML for ubuntu-touch ! On desktop, when I press the button "add debpt" it's open a form : When I lunch it into a emulator, I have nothing : This is ...
2
votes
0answers
149 views

How does one run QML tests on a Ubuntu Touch Phone?

My application has QML tests using QtTests that I run locally on the desktop via qmltestrunner. I am interested in running these tests on the device to simulate real conditions like the on-screen ...
2
votes
1answer
114 views

How do you equally space out elements in a Row?

Row{ width: parent.width spacing: ???? Checkbox{} Checkbox{} Checkbox{} Checkbox{} } So just to be clear, the checkboxes should be spaced in such a manner that however wide ...
1
vote
1answer
95 views

Why my application crash on ubuntu-touch?

I want to try to create un application for ubuntu-touch with QML ! I was created a simple application : import QtQuick 2.0 import QtQuick.Controls 1.1 import Ubuntu.Components 0.1 import ...
1
vote
1answer
62 views

Launchpad Qt/C++ and external tools

I'm new to Ubuntu developpement and searching for information regarding building apps through launchpad (using recipes). I have a project of building a Qt5/c++ webkit app and wanted to ask: how to ...
2
votes
0answers
111 views

Targetting Boost 32-bit While on 64-bit ubuntu?

Well i have libboost-all-dev installed, but i am trying to compile for 32-bit. I can't install libboost-all-dev:i386 either. g++ -lboost_filesystem main.cpp g++ -m32 -lboost_filesystem main.cpp The ...
1
vote
1answer
94 views

How to you get a flickable to do a smooth scroll?

Flickable{ Button{ onClicked: parent.????????? } Or do I have to create a function for this?
2
votes
1answer
39 views

Why does the Ubuntu SDK tell me, “do not use comma expression”, and what should I use instead?

So for example: onCurrentlyExpandedChanged: flickable.DragOverBounds, flickable.contentHeight += itemHeight,console.log(itemHeight) The commas will have a yellow underline, and the tooltip will ...
3
votes
1answer
46 views

How do you prevent the 2nd page in a PageStack from running?

I may be missing something here but I'm not sure why the code is running before page 2 should be loaded. http://pastebin.ubuntu.com/8068379/ And is there any way to prevent the functions and code ...
4
votes
1answer
212 views

Can't Run Ubuntu SDK Apps in Emulator

Ubuntu 14.04.1Qt Creator 3.1.1Ubuntu Touch: Image version 189 & 179 I recently upgraded from 12.04 to 14.04 LTS (with Ubuntu SDK installed, and I did re-enable the ubuntu-sdk repository) and ...
1
vote
1answer
273 views

Why am I getting the error “Cannot assign to non-existent property ”head"?

I'm actually on Trusty, and I want to try new "head" property which comes with API 14.10 of Ubuntu SDK. When I launch qmlscene to test my applicaton, I get this error : Cannot assign to ...
1
vote
1answer
22 views

Why do I get “Value of Key 'Comment' is empty” in my app review?

I uploaded a Ubuntu SDK app for review on https://myapps.developer.ubuntu.com and the review is pending, because there are errors. One is the following: "desktop_validates (iamonair)": { "link": ...