Hi,
Here is my first app "Taquin" a simple and classic puzzle game, that I have just published on the OpenStore and the source here: https://gitlab.com/AloysLiska/taquin

Please be indulgent, that's a beginner work, but I would appreciate your feedback on the app, on the code,etc.

QML and javascript were new for me (I have software skill and I mainly developed in C).
To begin with QML, I use : https://doc.qt.io/qt-5/qml-tutorial1.html, and https://mimecar.gitbook.io/qt-course/
And for javascript I use : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide.
And of course I use the UBPorts documentation.

My editor was Kate (default editor of Kubuntu), simple and sufficient I think for a simple app.
When you begin, there is a lot to learn, so I did not want to use something new for me (like Qtcreator or another editor).

For the next version of Taquin, my objective is to allow user to select an image in its gallery.

Enjoy the app (kind of game useful to kill time)!

@Lakotaubp, I fully charged the battery as you said, but it was the same problem, it was stuck in the first screen.

I tried to start the phone on bootloader by holding pwr and vol down buttons, but I never succeed!

I tried UBports installer, but last version 0.1.21 does not work with my FP2, I have the issue:
Fastboot: Unknown error: downloading 'boot.img'...OKAY [ 0.360s]booting...FAILED (remote: bootimage: incomplete or not signed)finished. total time: 0.361s

I add this problem before, see:
How to manually upgrade from OTA-3 to OTA-4 and @advocatux suggested to use the UBports installer V0.1.12.

I launched this version and it finally works!
I had to select manually the device to FP2, because device was not automatically detected. I reboot with pwr+voldown or pwr+volup+voldown buttons several times, after several reboots, it succeed to detect the device, and the update procedure went till the end successfully.

Now I have the OTA 8 and all my data.

Thank you @AlainW94 and @Lakotaubp

Thanks @cibersheep for your answers, I succeed to do what I want with Content Hub and a C++ plugin to manage file deletion and renaming.
I wrote a a sample app available here: importwithcontenthub, with many (too much!) comments.
This sample app allow user to import an image, the image is stored (so that it is available on next app launch). And when user imports a new image, it is stored by overwriting the last one (only last imported image is stored).

Thank you @advocatux.
I have the version: com.ubuntu.camera 3.0.1.765

Hello,
I have exactly the same issue on my Fairphone2. I just had it, install UT successfully (15.04 rc). I install telegram application from the open store, but I cannot search a group, there is no button for that. When I go to contact or to new group, it is in endless loading loop. In the scope, when I try to search, I have no keyboard and I cannot paste in the search field.
I do not know what t do.

Hi,

Just to say that now with UT 16.04, no more problem, I can connect by ssh from my phone (ssh client) to my PC (ssh server) by using the public/private key authentication.

Yes! it is working with last clickable version (6.23.3).
Thank you @lduboeuf !

Thank you @cibersheep , your code helps me to do mine!

Thanks @marathon2422 and @Opolork ,
I am pleased that you like it, I also received contributions for translations, that's motivating for me, I will update the app!

I found my problem: my docker image was obsolete.
I delete the docker image "clickable/ubuntu-sdk 16.04-amd64"
I launch again: clickable desktop
It download a new image and run successfully without error.

I did not know anything about docker, here is what I discover:

• First I read a bit on docker: https://docs.docker.com/get-started/
  I understand that with docker there is the image and the container. The container is the execution of the image. The image can be downloaded from docker hub and I think this is what clickable does, the image for 16.04-amd64 is here https://hub.docker.com/r/clickable/ci-16.04-amd64 . And I suppose this image is built from: https://gitlab.com/clickable/clickable-docker-images/-/tree/master/ubuntu-sdk/16.04-amd64
• to list the images: docker image ls

REPOSITORY             TAG                 IMAGE ID            CREATED             SIZE
clickable/ubuntu-sdk   16.04-armhf         62adb04a1781        13 months ago       2.92GB
clickable/ubuntu-sdk   16.04-amd64         b2a675929781        13 months ago       2.77GB

as you see my images were 13 months old!

• to delete the 16.04-amd64 image: docker rmi b2a675929781
• and I delete also the 16.04-armhf image

There is probably a better solution to update a docker image, no?

Thanks @cibersheep for your answers, I succeed to do what I want with Content Hub and a C++ plugin to manage file deletion and renaming.
I wrote a a sample app available here: importwithcontenthub, with many (too much!) comments.
This sample app allow user to import an image, the image is stored (so that it is available on next app launch). And when user imports a new image, it is stored by overwriting the last one (only last imported image is stored).

Yes! it is working with last clickable version (6.23.3).
Thank you @lduboeuf !

@lduboeuf, I have done clickable update, but I see that I have clickable version 6.22.0, so not the last. I will get the last version and try again, may be that's it.
Thanks!

Hi,
I try to run the C++ template app after doing clickable create , it runs correctly on desktop, but on the phone (FP2 with OTA-15, stable channel), it fails: I have a blank screen. With clickable logs, the messages are:

Loading module: 'libubuntu_application_api_touch_mirclient.so.3.0.0'
Creating a QMirClientScreen now
Starting app from main.cpp
qrc:/Main.qml:23:1: plugin cannot be loaded for module "Example": Failed to extract plugin meta data from '/opt/click.ubuntu.com/testcppapp.aloysliska/1.0.0/lib/arm-linux-gnueabihf/Example/libExample.so'
library "/vendor/lib/egl/libGLESv2S3D_adreno.so" not found

and I use here only the original C++ template without any modification.

Any ideas?

@cibersheep , on my side I understand more clearly how works the Content Hub for import.
I share below my discoveries.

When importing, the file is stored in cache directory, for example:

/home/phablet/.cache/taquin.aloysliska/HubIncoming/26/image20210220_160633634.jpg

This file:

• can be used within the app (that's the purpose)
• cannot be moved with method move from ContentItem, the move always fail.
• will be automatically deleted when closing the app, except with a dirty code that would not do finalize() method of ContentTransfer. That's dirty because imported file will accumulate in the cache directory and never deleted.

To have a permanent storage of the imported file, ContentStore should be defined and requested in ContentTransfer. There is example in the source code of ContentHub
here .

To summarize, transfer is requested by: peer.request(imgStore) with imgStore defined by :

ContentStore {
       id: imgStore
       scope: ContentScope.App    // App: to store in application data space
   }

File will be stored in application data, for example:

/home/phablet/.local/share/taquin.aloysliska/Pictures/image20210220_160633634.jpg

This file:

• can be of course used within the app
• can be moved with method move from ContentItem, but you cannot overwrite an existing file with this method. Unfortunately that's what I wanted to do in my app!
• will remain when closing the app.

In pure QML and javascript you cannot erase or overwrite app data files! if you know please tell me, I really search a lot!
That's a missing feature I think.
So to erase or to overwrite an existing file, I need to use C++ . Fortunately, @fulvio mention a C++ plugin that should fit my needs: here .

Thank you @cibersheep , your code helps me to do mine!

@cibersheep thanks!
I have some progress, the path given by StandardPaths.writableLocation(StandardPaths.CacheLocation) does not work apparently because it starts with file:// which in my case is: file:///home/phablet/.cache/taquin.aloysliska.
I use instead a direct path: "/home/phablet/.cache/taquin.aloysliska/userImages", the move still fail but the fallback to copy works.

Here are an extract from log:

qml: Transfer Charged
Failed to move content to: "/home/phablet/.cache/taquin.aloysliska/userImages/userImage01.jpg" falling back to copy
qml: file:///home/phablet/.cache/taquin.aloysliska/HubIncoming/60/image20210220_160613756.jpg
qml: myImgUrl: /home/phablet/.cache/taquin.aloysliska/userImages/userImage01.jpg
qml: Transfer Collected
qml: Transfer Finalized
qml: Transfer Finalized

So I have my file, I checked it is present with a shell. And it is still available within my app when I relaunched it.
But then when importing a new image with same process via content hub, I cannot overwrite the file, the move and fallback copy both failed if the file already exists.
So I am a bit lost, I will review my code, but if you have some ideas, this would be very helpful.

To summarize what I'd like to do (in QML and js only, if possible), it is to allow user to import an image via content hub. This image shall be available for the app on the next launch. And the user shall be able to import a new image which will overwrite the previous one.

@cibersheep Yes I think it's ok, I have in apparmor file:

{
    "policy_groups": [
        "content_exchange"
    ],
    "policy_version": 16.04
}

Re: Using image from Content Hub

Hi,
I find interesting information in above topic. I succeed to import an image with content hub.
Now I'd like to save this image in order to have it still there when launching again the app.
I try to use move function of content item my code here:

imgImportPage.activeTransfer.items[0].move(StandardPaths.writableLocation(StandardPaths.CacheLocation))

but I get always this error:

Failed to move content to: "file:///home/phablet/.cache/taquin.aloysliska/image20210219_153501743.jpg" falling back to copy
Failed to copy content to: "file:///home/phablet/.cache/taquin.aloysliska/image20210219_153501743.jpg"
qml: file:///home/phablet/.cache/taquin.aloysliska/HubIncoming/49/image20210219_153501743.jpg

I try to change the path name, to change the location (in .local/share/..), but none works.
Has someone any idea to solve this issue ?

I wonder also how we can manage directories and files (make a directory, move, delete, overwrite file), can it be done in QML or in javascript (no doc found about this) or do I need to code this in C++, python or other?

@capsia Thanks, that's good for me!