Ubuntu Touch Programming Course

mimecar

Hi @wilfridd. I've fixed the link, check again.

wilfridd

@mimecar
That's ok! Many thanks

Tewel

Thank You. Works great!

Tewel

Is it possible to run an „only“ C++ projekt with qt and on the device? I need, for example, the QNetworkAccessManager, its only in c++. If I try to compile it, it says „no executable found“... Thanks for help.

mimecar

If it is a C++ project that needs external libraries, you have to add them to the project configuration. Did you do it? Is the application running well on your PC?

Tewel

@mimecar Hello, thank you for helping. Im not sure. There are 3 modes: 1. Desktop: it works fine 2. UbuntuSDK for Desktop, it does not work, whants me to give him the executable „please specify one“ the 3. UbuntuSDK for device, I didn‘t tried yet. How do I give him the right libs? And where? Is there a documentation? I don‘t know exactly what I should search for to get the specific instruction... My experiences are only with visual-studio... and not cross anything :0) But I would like to get through this...

mimecar

Hi, @Tewel,

So far I have only worked with QML and JavaScript. If you send me the project you want to compile (with the minimum code the library uses), I'll check it over the weekend.

Tewel

@mimecar Thank you, thats a nice offer! You led me to a thing I whant to try first „Integration of qlm and c++“ there is a documentation. In the web are some hints that its nessesary to do this first, if you whant to use c++ with qml and ubuntu. But there was no time until now to figure it out. I will tell if its the solution....

Tewel

@mimecar Ok, the Connection of QML with c++ was needed first. Found a very helpfull Tutorial https://www.youtube.com/playlist?list=PLfkTJXI2Tk-e6Px7PRXvMxT6tH8e7rQ9i
Thank you for helping.

mimecar

Ok @Tewel, I will check your link.

A gift for Halloween (Advanced QML concepts chapter):
https://mimecar.gitbooks.io/ubuntu-touch-programming-course/en/

Code published:
https://github.com/mimecar/ubuntu-touch-programming-course-src

HendriXXX

I'm trying to get ubuntu-sdk running on my laptop.System is Ubuntu 16.04.
I have followed your guide. I get following errors when trying to start ubuntu-sdk...

Stopping containers: All containers stopped. Creating default network bridge ..... FAILED 
error: Creating the bridge failed with: not implemented 
—-Task exited with errors, please check the output---

And next popup says..

qtcreator: Setting up the container backend failed.

fulvio

Hi @HendriXXX
NOT sure if it is the solution, but take a look at this: https://insights.ubuntu.com/2016/04/07/lxd-networking-lxdbr0-explained/
Looking at that document running from a shell: sudo lxd init could be useful.
Otherwise (the simple solution) is download the virtual machine already configured with the sdk
using the link that you can find in this thread published by mimecar.

mimecar

@HendriXXX, have you tried what Fulvio says?

HendriXXX

Yes I tried everything. Sadly result are same. It is strange because it works in my desktop computer right away. Maybe it is related somehow to my netboot specs..

wdehoog

@mimecar Thank you very much for providing your virtualbox image.

One question when I connect my phone (moto g 2014) 'adb shell' under windows works but on the VM says 'device offline'.

mimecar

Good evening @wdehoog. Have you "connected" the phone to the virtual machine? Has the phone's display shown a warning when trying to connect your computer?

wdehoog

Yes it is 'connected' (otherwise there would be no device). I did not see any warning on the phone's display. It is no issue since I have setup ssh access. I was just being curious.

mimecar

Check in the hidden folders of your computer user if you have one related to ADB. There may be some previous configuration and therefore the computer is not requesting the connection.

mimecar

@HendriXXX, I think I've got it.

The steps are:

sudo add-apt-repository ppa:ubuntu-lxc/lxd-stable
sudo apt-get update
sudo apt-get upgrade && sudo apt-get dist-upgrade

Reboot the computer

sudo lxd init

Do you want to configure a new storage pool (yes/no) [default=yes]?
Name of the new storage pool [default=default]:
Name of the storage backend to use (dir, lvm, zfs) [default=zfs]:
Create a new ZFS pool (yes/no) [default=yes]?
Would you like to use an existing block device (yes/no) [default=no]?
Size in GB of the new loop device (1GB minimum) [default=15GB]:
Would you like LXD to be available over the network (yes/no) [default=no]?
Would you like stale cached images to be updated automatically (yes/no) [default=yes]?
Would you like to create a new network bridge (yes/no) [default=yes]? no

LXD has been successfully configured.

Launch IDE with:

ubuntu-sdk-ide

Configure the kits and restart ubuntu-sdk-ide. A message will appear indicating that the container is faulty. Accept to correct them. After this step it will work fine. I was able to run an example application on the computer and the M10 FHD with these steps.

mimecar

A question related to the course. Are your applications working well with UBports firmware (I still have Canonical firmware)? Are there any errors other than those related to LXD and Ubuntu 16.04?