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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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      • mimecarM Offline
        mimecar @Nithin
        last edited by

        @nithin, Have you done all the steps in the "Running the Application on a Real Device" section?
        https://mimecar.gitbooks.io/ubuntu-touch-programming-course/content/en/chapter-02.html

        On the screen of Ubuntu devices you should get your phone.

        1 Reply Last reply Reply Quote 0
        • N Offline
          Nithin
          last edited by Nithin

          Not yet I was still trying to run it on my desktop. When that didn't work i didn't try running it on my Phone. The "Running on your device" section comes after that.

          1 Reply Last reply Reply Quote 0
          • N Offline
            Nithin
            last edited by Nithin

            Tried running it on the device. after activating developer mode, the SSH notification doesn't appear at all. Also i tried installing Ubuntu sdk again. At the step

            sudo apt-get install ubuntu-sdk

            i get the following error

            The following packages have unmet dependencies:
            ubuntu-sdk : Depends: ubuntu-sdk-libs-dev but it is not going to be installed
            E: Unable to correct problems, you have held broken packages.

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            • N Offline
              Nithin
              last edited by

              Assuming Kubuntu being a possible cause for the problem, I decided to try it out on Kde Neon and Ubuntu. Kde Neon again seemed to have the same problem of not wanting to install dependencies. So then I Installed Ubuntu and tried the same on it. only to encounter some other errors, here are a few ones.

              during

              sudo lxd init
              in the question on default storage back-end to use, Ubuntu wouldn't take zfs for an option for some reason.
              so had to then use the command
              sudo add-apt-repository ppa:ubuntu-lxc/lxd-stable
              this doesnt work either. instead one has to use
              sudo add-apt-repository ppa:ubuntu-lxc/stable

              After this there was no zfs option available at all.
              so had to use this

              sudo apt install -t xenial-backports lxd lxd-client

              after all of this i am back to the same problem which i faced in the first step.

              I am trying to follow the tutorial here and managed to install the new Ubuntu Sdk. When I run or build the app i get the following messages

              in Issues> error: There was a error in the device detection of desktop, no IP address was returned.
              in application output> Application failed to start: No private key file given.

              As a last step will try compiling the clock app as mentioned in the Readme.Developers.

              T 1 Reply Last reply Reply Quote 1
              • mimecarM Offline
                mimecar
                last edited by

                Good evening.

                I have uploaded the translation of the chapter "Formatting label and events". I'll upload the source code next week. I have another collaboration from Fulvio pending and I hope to upload it next week.
                https://mimecar.gitbooks.io/ubuntu-touch-programming-course/content/en/chapter-04-s03.html

                Pulsar33P 2 Replies Last reply Reply Quote 2
                • T Offline
                  Talkless @Nithin
                  last edited by Talkless

                  @nithin said in Ubuntu Touch Programming Course:

                  After this there was no zfs option available at all.
                  so had to use this

                  sudo apt install -t xenial-backports lxd lxd-client

                  Thanks! Using lxd from xenial-backports helped to overcome that Creating the bridge failed with: not implemented issue.

                  It would be nice to have this hint in Course.

                  Volla Phone X

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                  • Pulsar33P Offline
                    Pulsar33 @mimecar
                    last edited by

                    @mimecar : following you.
                    Thanks for your work !
                    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)

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                    • Pulsar33P Offline
                      Pulsar33 @TischlerWilly
                      last edited by Pulsar33

                      @tischlerwilly @mimecar : Error No Storage Pool Found
                      As said by tischlerwilly, I have the same error when installing the developper kits :

                      No storage pool found
                      I'm also using MINT 18(.3) 64bits. Did you find the solution, please ?
                      Best regards
                      Pulsar33

                      Oooops ! See below ...

                      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)

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                      • Pulsar33P Offline
                        Pulsar33
                        last edited by

                        @mimecar @HendriXXX @TischlerWilly :

                        Hello,
                        Sorry, I've discovered that when I search for something with CTRL-F in a long thread with Firefox, the process doesn't see all the content. So at the beginning of the thread, searching for "pool", I found only the posts of TischlerWilly and mimecar but no complete answer.
                        This is why I thought there was no answer ...
                        If I go at the end of the thread, I find the answers of HendriXXX and mimecar, so I'll give a try to the solution and report here how it goes.
                        Have a nice day
                        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)

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                        • Pulsar33P Offline
                          Pulsar33 @mimecar
                          last edited by

                          @mimecar said in Ubuntu Touch Programming Course:

                          • sudo add-apt-repository ppa:ubuntu-lxc/lxd-stable

                          This command returned an error. I tried this instead :

                          • sudo add-apt-repository ppa:ubuntu-lxc/stable

                          I hope it was the good choice. Next I followed the proposal of HendriXXX :

                          • sudo chown lxd:lxd /var/lib/lxd/unix.socket

                          All the process worked and my kits are created now.
                          However, I didn't see the error "container is faulty"
                          Proceeding to the next steps ...
                          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)

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                          • gsilvaptG Offline
                            gsilvapt
                            last edited by

                            This may seem off-topic, but way a custom PPA when LXC and LXD are available in the repositories?

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                            • Pulsar33P Offline
                              Pulsar33 @mimecar
                              last edited by Pulsar33

                              @mimecar : Hello
                              I've been able to generate Hello Word and Calculator applications.
                              All is perfectly clear and well explained. Thank you !

                              However, I'm facing three errors as described below. Maybe are they due to the same reason.

                              • When I create a project, only 14.10 or 14.04 options are available :
                                Only 14.10

                              • If I check the kits in Compile & Execute, I see a warning about path not matching :
                                Path not matching

                              • Moreover, each time I launch Qt Creator, an update is proposed for each kit and errors occur.
                                Showing details, several tranfers are not available and tasks end with errors:
                                [...]
                                Ign http://archive.ubuntu.com vivid-security/restricted Translation-en
                                Ign http://archive.ubuntu.com vivid-security/universe Translation-en
                                Err http://archive.ubuntu.com vivid/main Sources 404 Not Found [IP: 91.189.88.161 80]
                                Err http://archive.ubuntu.com vivid/restricted Sources 404 Not Found [IP: 91.189.88.161 80]
                                Err http://archive.ubuntu.com vivid/universe Sources 404 Not Found [IP: 91.189.88.161 80]
                                Err http://archive.ubuntu.com vivid/multiverse Sources 404 Not Found [IP: 91.189.88.161 80]
                                Err http://archive.ubuntu.com vivid/main amd64 Packages 404 Not Found [IP: 91.189.88.161 80]
                                [...]
                                Err http://archive.ubuntu.com vivid-security/multiverse amd64 Packages 404 Not Found [IP: 91.189.88.161 80]
                                W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/main/source/Sources 404 Not Found [IP: 91.189.88.161 80]
                                W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/restricted/source/Sources 404 Not Found [IP: 91.189.88.161 80]
                                W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]
                                W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/multiverse/source/Sources 404 Not Found [IP: 91.189.88.161 80]
                                [...]
                                W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-security/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]
                                E: Some index files failed to download. They have been ignored, or old ones used instead.
                                ---Task exited with errors, please check the output---

                              As far as ipvoid knows, the faulty IP is :
                              IP Address: 91.189.88.161
                              Hostname: keeton.canonical.com
                              Organization: Canonical Group Limited
                              ASN: AS41231 Canonical Group Limited
                              Continent: Europe (EU)
                              Country: United Kingdom (GB)
                              Latitude\Longitude: 51.5142 / -0.0931
                              Region: England
                              City: London

                              It seems that this must be solved to continue learning how to create my own applications. Have you a solution please ?
                              Have a nice day.
                              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)

                              advocatuxA 1 Reply Last reply Reply Quote 0
                              • advocatuxA Offline
                                advocatux @Pulsar33
                                last edited by

                                @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

                                Pulsar33P 1 Reply Last reply Reply Quote 1
                                • Pulsar33P Offline
                                  Pulsar33 @advocatux
                                  last edited by Pulsar33

                                  @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 Reply Quote 0
                                  • T Offline
                                    Talkless @Pulsar33
                                    last edited by

                                    @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 Reply Quote 1
                                    • T Offline
                                      Talkless @Talkless
                                      last edited by Talkless

                                      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 Pulsar33P 2 Replies Last reply Reply Quote 1
                                      • C Offline
                                        chris @Talkless
                                        last edited by chris

                                        @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 Reply Quote 0
                                        • T Offline
                                          Talkless @chris
                                          last edited by

                                          @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

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                                          • Pulsar33P Offline
                                            Pulsar33 @Talkless
                                            last edited by

                                            @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)

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                                            • Pulsar33P Offline
                                              Pulsar33
                                              last edited by

                                              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)

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