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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Ubuntu SDK: Where are the examples?

I am newbie to Ubuntu SDK. Question: I want to see all the 57 Examples, but nothing to find. Screenshot 1: Question: What does these error messages say in plain english? Error1: Starting /usr/...
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1answer
284 views

unable to locate mingw32

I'm trying to compile from source everything I need in order to build Ubuntu touch for my Samsung Galaxy Tab 4. I used to guide from the Ubuntu web site and when I enter this command: $ sudo apt-get ...
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189 views

How do I develop a Ubuntu application using the Go language?

I want to develop some application for the Ubuntu platform. But I don't know C++. I can learn QML very easily. The problem is that the logic or process behind the scene in an application seems to use ...
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1answer
79 views

Problem with android studio

I try to install android studio but I found this error. Can someone help me? If I write on terminal sudo apt-get install android-studio Reading package lists... Done Building dependency tree ...
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36 views

Ubuntu touch app with nodejs library [duplicate]

I want to write an application with the library in nodejs. Is there any way to connect QML or C++ with nodejs on ubuntu touch? Edit: I want to write a native application (in QML) and use a library ...
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2answers
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How to solve [Errno 30] Read-only file system

I'm new to this forum, and this is my first question: I bought the meizu MX4 ubuntu edition today. I would like to install Ubuntu SDK. I tried to follow this walkthrough: https://developer.ubuntu....
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2answers
48 views

Cannot git clone Apparmor kernel patches

Whenever I enter (git clone git://kernel.ubuntu.com/jj/ubuntu-utopic.git) into the terminal, I get this output: Cloning into 'ubuntu-utopic'... fatal: Could not read from remote repository. Please ...
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1answer
83 views

Online IDE with an Ubuntu workspace?

Are there any online IDEs out there that have a Linux compiler and/or Ubuntu/Linux workspace? I often work away from home on Linux projects, and usually on Windows PCs, so it'd be great if I could ...
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28 views

How can I create a chromium-like background app?

I want to create an application that (like chromium) creates an icon on the top menu bar and after you close the application, the icon is still there and the application continues running in the ...
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25 views

How to create application from bash file? [duplicate]

I have bash file, it's about resizing pictures and adding color borders to each picture..it runs in ubuntu 15.04 well..it works on imagemagick..I wanted to make it as application like ubuntu ...
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24 views

Ubuntu SDK AppArmor issues with opening CSS/JS files from filesystem

I'm trying to create a new app using HTML5/JavaScript with Ubuntu SDK and my new Ubuntu Touch phone. I've managed to run it on my phone, but it doesn't load any styling information and without ...
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22 views

Ubuntu snappy software update cycle

I want to use Ubuntu snappy for our project which is basically secure update the application. In the Ubuntu IoT I found that it has the feature of secure FOTA. The basic idea is- we run snappy on our ...
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1answer
22 views

.cpp and .h files of new classes are not showing in Ubuntu SDK tree

I've added new classes to my project via Ctrl-N >> C++ >> C++ Class. However, after the files are added to my models/my-project folder, it does not show up on the tree in Ubuntu SDK. Why is this? ...
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1answer
320 views

How to create a custom splash screen for a program?

I am currently building a client for our users at work with Ubuntu MATE 15.10 and Plank as a dock. But when I click for example the Firefox icon in the dock nothing happens until it suddenly pops up ...
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0answers
79 views

How to publish Unity Game Engine app (executable binary) to Ubuntu Store?

Quite recently Unity Game Engine (not to be confused with Ubuntu's Unity user interface) added an option to create a linux build. The result is a set of two executable binary files .x86 and .x86-64, ...
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35 views

Is there a reasonable chance of making money on an Ubuntu desktop utility application?

I recently asked this question on Quora. Unfortunately I didn't get much of a reply, so I thought of asking here... Hopefully this question is not off topic, but I want to know if any others here ...
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1answer
90 views

How to write a C++ backend for Ubuntu Touch that can access internet?

Is there anyway to write a C++ backend for an Ubuntu Touch application that can access the internet, and download files? Or do I have to do that through QML, and pass it to objects written in C++?
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1answer
70 views

QML dynamic scoping not working (ReferenceError)

I am trying to reproduce the example here where the TitlePage.qml component creates two TitleText instances even though the TitleText type is in a separate file (under Section: Component Instance ...
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1answer
108 views

Display column values from sqlite db

I am attempting to return all column values from an Sqlite db to a Qchart in qml in Ubuntu SDK - the db contains various fields including kilometres, miles, etc. I would like to return all values in ...
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40 views

Shared libraries in phone apps

I am trying to port this (https://github.com/jobe-m/ownkeepass) keepass app to Ubuntu Phone. I am just at the beginning an want to include the needed libraries and plugins. I didn't write a UI yet. ...
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1answer
21 views

Documentation for GNOME application code?

I want to get involved in GNOME development, however I have one problem, there is such a large amount of code in every package, and so many files and variables that it's really hard to find bugs ...
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1answer
168 views

How do I see examples on the ubuntu-sdk?

The Ubuntu developer website says: For a presentation of Ubuntu HTML5 widgets, check out the HTML5 Gallery App (installed by the ubuntu-html5-ui-toolkit-examples package). You can launch the ...
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0answers
22 views

No ubuntu web app inspector

Been using Ubuntu 14.04 LTS release to do some development webapps and the web inspector was there as default. When installing ubuntu sdk on 15.04 and 15.10 there's no web inspector. How can i get it ...
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1answer
38 views

Ubuntu SDK SortFilterModel with variables

I'm developing an app for Ubuntu Touch. I have a large list of items in an xml file and access it using the XmlListModel. I would like to offer some filtering on the list (as it is very large). Is it ...
0
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1answer
23 views

Automated review failure from store - online_accounts

I'm trying to upload a package to the Ubuntu Software Store that uses Online Accounts. However, it keeps failing automated review with errors like: No JSON object could be decoded. Value: "ERROR: ...
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1answer
37 views

ubuntu phone textfield displayed different

I am trying to build a QML application for Ubuntu phone. My form looks ok on screen (desktop), but when I put the app on the phone, the display is off. The borders around my test fields are not ...
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1answer
26 views

U1db-Qt not working as expected in ListView (Ubuntu Touch App Development)

Recently, I've been trying to learn how to use the U1db Library (if that's what you call it), but it hasn't been working the way I expected it to work. Here is my code: import QtQuick 2.4 import ...
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73 views

Can I get access to Ubuntu apps on Ubuntu touch if I allow read write access?

Okay so I'm an impatient bastard who realises he should have waited but purchased the BQ HD5 Ubuntu mobile phone back in June whilst being fully aware it didn't have that many apps available as was ...
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1answer
53 views

Curious how a server works

I am currently a high school student who has developed a few iPhone apps that have connected to Parse.com, so I have a little idea of how a... "server" (pre-made) works. But, I do know that's not how ...
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1answer
69 views

“Desktop file does not exist” error when using qmake based template in Ubuntu SDK

Just as the LaunchPad bug says: https://bugs.launchpad.net/ubuntu/+source/qtcreator-plugin-ubuntu/+bug/1512094 Using the Ubuntu SDK template "QML App with C++ plugin (qmake)" or any other qmake ...
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37 views

How to deploy mediascanner to Ubuntu Touch device?

I want to deploy mediascanner https://code.launchpad.net/~ubuntu-branches/ubuntu/vivid/unity-scope-mediascanner/vivid to Ubuntu Touch phone device. I can compile it via cmake and make in SDK etc, but ...
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71 views

What are the main advantages / disadvantages considering Ubuntu SKD and NW.JS for HTML5 Desktop App development?

Besides the obvious facts that NW.JS apps could be build for other operation systems than Ubuntu only and Ubuntu SDK can serve for other programming languages than HTML5 and JavaScript, what else are ...
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2answers
832 views

How to develop a System Indicator for Unity?

This is not a duplicate of How to create Unity indicators?. I'm looking for system indicator not application indicator. Backgound: From these two questions: How do I add or manipulate Application/...
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59 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 ...
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27 views

TEE / TrustZone Andoird Phone

I was wondering if TrustZone is enabled on the Cortex A7 ARM processor on the Aquaris E4.5. Would like to purchase one for developing Trustlets/Trusted Apps and experiment with them. Any response is ...
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1answer
42 views

Can I run the Ubuntu SDK for Windows?

The last question on this was 2 years ago, so I'm hoping that things have changed... I spend a lot of time in college, and use the Windows PCs there. I would really like to begin development for ...
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122 views

QtBluetooth support for Ubuntu Touch

I like to build a qml-based app with bluetooth support. My code works well for the Desktop Kit in the Ubuntu SDK but fails on the BQ Aquaris 4.5 with the error message 'module "QtBluetooth" is not ...
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98 views

ubuntu-sdk mkspec

I followed instructions in Ubuntu SDK to install the IDE. No problem. I can write an app and run it in the desktop, but not in my Ubuntu BQ 4.5. The kit is wrong and several errors appear: "Mkspec not ...
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1answer
29 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 ...
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1answer
17 views

What does lint_package_filename_arch_valid mean?

In a review of my .click package, a warning contained the message: lint_package_filename_arch_valid What do I need to do to fix this?
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1answer
22 views

What does lint_package_filename_format mean?

In a review of a .click package of my app, a message contained the following: lint_package_filename_format How can I fix it?
2
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1answer
130 views

Pure Qt application (QML/QtQuick) on Ubuntu Phone?

I have a Qt application that is based on QML/QtQuick and runs, among other platforms, on Android. Is it possible to compile this application without (major) modifications for Ubuntu phone? If yes, how?...
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37 views

Are there any open source projects From which it is eary to learn Ubuntu Desktop Application Development?

I have been contributing in this forum through asking and answering questions, but now I want to contribute in Open Source Projects by coding. But I have no idea which are the suitable platforms and ...
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1answer
90 views

ubuntu14.04: opengl for qt development

since a half day i try to get qt-creator to compile ... but i get errors. This is the output i get, when i start to compile a standard graphical project of the qt-creator (just created this empty ...
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1answer
663 views

REMOVE GNS3 1.3.9

This version keeps giving this error message " Can't connect to server http://127.0.0.1:8002 Even when I change the port number. I am wondering how can I uninstall it since I compiled using ...
2
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1answer
75 views

Ubuntu touch click package

I have just publish my first app on Ubuntu touch. It is called "Food additives". Application can be install through ubuntu app store, but there is an one problem. After app installation, you can see ...
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1answer
141 views

How to save variables for all pages in qml?

I am currently working on a game for Ubuntu touch. It is as good as finished, but one thing does not work: I have multiple pages using PageStack and want to have some variables which i can reach, ...
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74 views

Cordova Ubuntu Phone: how to debug?

I have installed the sdk and enabled developer mode on my ubuntu phone. If I connect the device via usb and go to debug -> start debugging -> attach to running application and choose sdk form dropdown ...
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14 views

problem with sdk

i was trying to develop apps for ubuntu and downloaded ubuntu-sdk but i got to know that we can build mobile apps with ubuntu-sdk.Can someone tell why we e ubuntu-sdk to build apps for mobile ...
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1answer
30 views

Error uploading update to ubuntu touch app: app version is not different from the earlier one

This refers to an app I have published (recorder). I wanted to update to a newer version but I get an error saying that the new version is not newer than the version already published. What does this ...