Convert ErrorActivity to kotlin

[dustdfg]

What is it?

• Codebase improvement (dev facing)
• Meta improvement to the project (dev facing)

Description of the changes in your PR

• Convert ErrorActivity to kotlin

APK testing

The APK can be found by going to the "Checks" tab below the title. On the left pane, click on "CI", scroll down to "artifacts" and click "app" to download the zip file which contains the debug APK of this PR. You can find more info and a video demonstration on this wiki page.

Due diligence

• I read the contribution guidelines.
• The proposed changes follow the AI policy.
• I tested the changes using an emulator or a physical device.

[theimpulson]

Please strip commit addressing new line to another PR and open that when this one is merged. It makes things harder to review otherwise.

[dustdfg]

Please strip commit addressing new line to another PR and open that when this one is merged. It makes things harder to review otherwise.

Ok. And sorry expect kotlin conversion commit to be changed because I've just found kotlins extension functions appendLine and buildString... Or I can add one more commit on top

[theimpulson]

Please strip commit addressing new line to another PR and open that when this one is merged. It makes things harder to review otherwise.

Ok. And sorry expect kotlin conversion commit to be changed because I've just found kotlins extension functions appendLine and buildString... Or I can add one more commit on top

It should be okay to amend existing commits or add another on top as long as they are related and aren't too big of a change.

[theimpulson]

Thanks!

[Stypox]

@dustdfg in case you or anyone else wants to convert the whole error infrastructure to Kotlin and rewrite the UI in Compose on the refactor branch, I would suggest copy pasting files from here: https://github.com/Stypox/dicio-android/tree/master/app/src/main/kotlin/org/stypox/dicio/error . It's a port of NewPipe's error activity to Compose I made a while ago that looks almost the same and has roughly the same functionality.