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Ubuntu Touch Programming Course

Scheduled Pinned Locked Moved App Development
documentationubuntu touch
113 Posts 27 Posters 67.7k Views 12 Watching
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    • A Offline
      advocatux @Pulsar33
      last edited by 6 Apr 2018, 11:24

      @pulsar33 Vivid reached End of Life in February 4, 2016. You need to replace all the archive.ubuntu.com with old-releases.ubuntu.com in your sources.list

      P 1 Reply Last reply 7 Apr 2018, 16:01 Reply Quote 1
      • P Offline
        Pulsar33 @advocatux
        last edited by Pulsar33 4 Jul 2018, 16:02 7 Apr 2018, 16:01

        @advocatux @mimecar : Hello
        Thank you for the reply, however I'm not sure to know what to do now. As far as I understand, the problem is to update the kits, not my system which is perfectly up to date (I use MINT18.3). I've searched the whole GUI of Qt Creator but not found how to specify the sources.

        Where are defined the sources for the kits ?

        Moreover, why am I the first to have the problem following the Programming Course if the end of life of Vivid was in February 2016 ?

        Good evening
        Pulsar33

        Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
        Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
        Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

        T 1 Reply Last reply 8 Apr 2018, 11:27 Reply Quote 0
        • T Offline
          Talkless @Pulsar33
          last edited by 8 Apr 2018, 11:27

          @pulsar33 said in Ubuntu Touch Programming Course:

          As far as I understand, the problem is to update the kits, not my system which is perfectly up to date

          It seem so. I guess we need to update /etc/apt/sources.list inside lxd contaner used for building?

          Volla Phone X

          T 1 Reply Last reply 8 Apr 2018, 11:57 Reply Quote 1
          • T Offline
            Talkless @Talkless
            last edited by Talkless 4 Aug 2018, 11:59 8 Apr 2018, 11:57

            I did this:

            • Enter container with lxc exec device-armhf -- /bin/bash
            • Replace archive into old-releases in sources.list with sed -i "s|archive|old-releases|" /etc/apt/sources.list

            But after that, running apt update inside container, I get errors about ports.ubuntu.com/ubuntu-ports/dists/vivid/... (404 Not Found), while old-releases works fine for other repositories.

            There are in fact no vivid in this repo:
            http://ports.ubuntu.com/ubuntu-ports/dists/

            So what cane ports host be changed into? Is there archive as that old-releases somewhere?

            Volla Phone X

            C P 2 Replies Last reply 8 Apr 2018, 13:08 Reply Quote 1
            • C Offline
              chris @Talkless
              last edited by chris 4 Aug 2018, 13:21 8 Apr 2018, 13:08

              @talkless In my containers I replaced all urls by http://old-releases.ubuntu.com/ubuntu
              also the ports ones
              vivid vivid-security vivid-backports vivid-updates (main / multiverse / restricted / universe) are all included there

              T 1 Reply Last reply 8 Apr 2018, 13:50 Reply Quote 0
              • T Offline
                Talkless @chris
                last edited by 8 Apr 2018, 13:50

                @chris said in Ubuntu Touch Programming Course:

                @talkless In my containers I replaced all urls by http://old-releases.ubuntu.com/ubuntu
                also the ports ones
                vivid vivid-security vivid-backports vivid-updates (main / multiverse / restricted / universe) are all included there

                But there's no ubuntu-ports repository (directory) inside http://old-releases.ubuntu.com/

                Volla Phone X

                1 Reply Last reply Reply Quote 0
                • P Offline
                  Pulsar33 @Talkless
                  last edited by 8 Apr 2018, 15:04

                  @talkless @chris @mimecar : Well shot Guys !
                  Thank you for the tip. I didn't try for the armhf-device kit but I succeed for the desktop kit. In fact, the configuration is different for the two kits and the desktop kit only involves "archive". So the tip of @Talkless was clean and the (long) update took place without error.

                  101 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 95.3 MB of archives. After this operation, 36.1 MB of additional disk space will be used.
                  [...]
                  Get:103 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/ vivid/main unity8-private amd64 8.15+15.04.20161129-0ubuntu1 [584 kB]
                  [...]
                  Processing triggers for libc-bin (2.21-0ubuntu4.0.1) ...
                  ---Task exited with no errors---

                  Most updates are from ci-train-ppa-service ...
                  The HelloWorld example compiles and runs without problem.

                  Upon the next launch of Qt Creator, only the armhf-device update is proposed.
                  Finding ports.ubuntu.com correct source may solve the last problem.

                  Good evening
                  Pulsar33

                  Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
                  Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
                  Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

                  1 Reply Last reply Reply Quote 0
                  • P Offline
                    Pulsar33
                    last edited by 10 Apr 2018, 23:35

                    Hello,
                    I'm not sure I've done the right things and I hope a "guru" will warn me if necessary but I found how to update the device-armhf kit :

                    lxc exec device-armhf -- /bin/bash
                    root@device-armhf:/# cd /etc/apt
                    root@device-armhf:/etc/apt# sed -i "s|archive|old-releases|" sources.list
                    root@device-armhf:/etc/apt# sed -i "s|ports.ubuntu.com/ubuntu-ports|old-releases.ubuntu.com/ubuntu|" sources.list

                    Then, the (long) update ends with no error.

                    This seems fine but I must now understand why all my choices are for 14-10 framework despite the fact that my kits are made with 15-04 framework ...
                    limited choices

                    Solution is welcome !
                    Best regards
                    Pulsar33

                    Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
                    Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
                    Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

                    1 Reply Last reply Reply Quote 0
                    • M Offline
                      metalbiker
                      last edited by 13 Apr 2018, 11:54

                      I think this is a major indication that the SDK needs to be maintained so we can make Ubuntu Touch a success. I think a lot of you can agree with that.

                      A 1 Reply Last reply 13 Apr 2018, 14:51 Reply Quote 0
                      • A Offline
                        advocatux @metalbiker
                        last edited by 13 Apr 2018, 14:51

                        @metalbiker this is a volunteer based project, and it's free software, so if any developer(s) wants to maintain it, the door is open.

                        1 Reply Last reply Reply Quote 0
                        • T Offline
                          tatonuta
                          last edited by 8 Jul 2018, 12:43

                          This post is deleted!
                          1 Reply Last reply Reply Quote 0
                          • T Offline
                            tatonuta
                            last edited by tatonuta 7 Aug 2018, 22:52 8 Jul 2018, 22:10

                            Hello! I am having a problem with creation of Kits (pages 15-19 of the PDF).

                            I try to create new Kit/Build target (as described on pages 15-19) and I choose option "Build and run your application locally on the Desktop", and click "Next", and choose the "Ubuntu-sdk-15.04-dev" and click "Next", and choose target name "default", and click "Finish"

                            then a window appears showing that the kit is being downloaded

                            0_1531090363679_Zrzut ekranu z 2018-07-09 00-50-08_same-okno.png

                            and finally an error message appears:

                            • Creating image with: framework: ubuntu-sdk-15.04 arch: amd64
                              error: Failed to load raw.lxc
                              ---Task exited with errors, please check the output---

                            0_1531087501292_Zrzut ekranu z 2018-07-08 23-45-58_800px.png

                            The same error happens when I try to do the kit under "Build your application to run on a Ubuntu device or emulator" and choose "Ubuntu-sdk-15.04-dev".

                            [I do not use Wizard because I had errors during the first try and the "Do not show this Wizard the next time" was ticked so I have no access to the Wizard anymore. But I have found equivalent wizard in QTcreator - Tools - Ubuntu so I use this one]

                            I am doing it on a new, freshly installed Ubuntu 16.04.4. Before this errors I had errors similar to people who wrote in this thread and I used their/your hints to overcame those errors (like changing .

                            1 Reply Last reply Reply Quote 0
                            • T Offline
                              tatonuta @mimecar
                              last edited by 9 Jul 2018, 22:32

                              @mimecar said in Ubuntu Touch Programming Course:

                              Good afternoon.
                              You can now download the resources I used in the UbuconParis 2017 workshop. The virtual machine has the following features:

                              Ubuntu 16.04 with the Mate desktop.
                              SDK already configured with IDE icon on the desktop.
                              The workshop exercises are saved in the User Folder.

                              Hi! Thanks for doing it! After several hours I still have problems with installing Ubuntu SDK IDE so it looks like a perfect solution for me.

                              I have downloaded the 13 GB files. What do I do now?

                              A 1 Reply Last reply 10 Jul 2018, 05:23 Reply Quote 0
                              • A Offline
                                advocatux @tatonuta
                                last edited by 10 Jul 2018, 05:23

                                @tatonuta you need to configure VirtualBox on your computer before installing those downloaded files.

                                T 1 Reply Last reply 10 Jul 2018, 19:00 Reply Quote 1
                                • T Offline
                                  tatonuta @advocatux
                                  last edited by 10 Jul 2018, 19:00

                                  @advocatux Thanks! Is this a right tutorial for mounting VirtualBox? http://nomone.com/2016/11/05/mounting-a-vdi-file-in-ubuntu/ If yes: I have made all steps which are in the instructions and have successfully mounted the /dev/nbd0p1. But what should I do next? What command? How can I install the downloaded file?

                                  A 1 Reply Last reply 10 Jul 2018, 19:15 Reply Quote 0
                                  • A Offline
                                    advocatux @tatonuta
                                    last edited by 10 Jul 2018, 19:15

                                    @tatonuta those instructions you've linked are for quemu, not virtualbox

                                    I think Virtualbox is easier if you don't have previous experience with VM, so install virtualbox and then follow this http://linuxbsdos.com/2015/11/13/how-to-import-a-virtual-machine-image-into-virtualbox/

                                    T 1 Reply Last reply 10 Jul 2018, 22:43 Reply Quote 1
                                    • T Offline
                                      tatonuta @advocatux
                                      last edited by 10 Jul 2018, 22:43

                                      @advocatux Thanks a lot. It worked for me. 🙂

                                      1 Reply Last reply Reply Quote 1
                                      • mimecarM Offline
                                        mimecar
                                        last edited by 30 Jul 2018, 18:51

                                        Good afternoon.

                                        I wanted to comment on the status of the programming course. For personal reasons I have left the course on hold. In these moments with the day to day I already have enough.

                                        I have reviewed the GitBook server and I see that several things have changed. Now the course is within the "legacy" subdomain and some functions like the start page have been disabled. The book can be updated but with several conditions:

                                        • The book can only be in HTML format.
                                        • Plugins no longer work.

                                        For these reasons I am considering changing the platform of the course. It does not convince me to generate documentation only in HTML format. The platforms that I see reasonable are:

                                        • LaTeX
                                        • Sphynx.
                                        • LibreOffice.

                                        Of the three platforms I see more powerful LaTeX. It is true that it does more work than using Markdown + GitBook, but it also allows you to better adjust the output in all formats.

                                        What is your opinion?

                                        A P lfortanetL U 4 Replies Last reply 30 Jul 2018, 19:39 Reply Quote 2
                                        • A Offline
                                          advocatux @mimecar
                                          last edited by advocatux 30 Jul 2018, 19:39

                                          @mimecar hi, good to see you 🙂

                                          Yes, LaTeX is more complete than the other two tools, and its output has the highest possible quality, but it has the steeper learning curve too, and that's not good if you want people helping you with your course, someday.

                                          I personally don't see LibreOffice as a good option, so my opinion based in tool functionality, and user-friendliness, I think Sphynx is the best option 🙂

                                          1 Reply Last reply Reply Quote 0
                                          • P Offline
                                            Pulsar33 @mimecar
                                            last edited by 30 Jul 2018, 23:11

                                            @mimecar Hello

                                            I follow this forum since some months and I was really happy to discover your work (as I said above). There was a chance for me to develop GUI for usefull functions, which is my favorite hobby. I've been programming since the 80's with so many old langages, from microcode to object oriented. However, I don't know about collaborative methods of coding. It's difficult for me to involve in big projects. Nevertheless, I thought that your work could help me to be usefull for the community.

                                            Unfortunately, I'm blocked (as described to youself and others above). I've read that I'm not the only one to have problems. So, mimecar, sorry but I've no idea about the questions you asked. But what I know is that it would be more usefull for the community to give your time in unblocking volunteers instead of improving your (really nice) documentation. Is it possible please ?

                                            Best regards
                                            Pulsar33

                                            Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
                                            Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
                                            Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

                                            1 Reply Last reply Reply Quote 0
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