Port flutter features to KMP

[crc-32]

There's a ton of features in Cobble that are implemented in flutter, we want to move to Kotlin Multiplatform, both in UI (Compose Multiplatform) and implementation, so it's more maintainable and we don't have to cross the 'gap' between flutter and the native code.

Alot of work has already been done on this to remove our reliance on a flutter background worker, but we still have the UI and any business logic still in flutter to do!

• KMP Settings tab #304
  • Calendar management
  • Notification filtering
  • Developer options & dev connection
• KMP Appstore #303
• KMP Watches tab #305
• KMP Rebble sign-in #306
• KMP Pairing and onboarding #307
• KMP Firmware updates #308

These should be gradually integrated, launching the associated screen in the KMP UI when selected from flutter (as the Locker tab currently does)

[gywst]

How can I help?

[qichuan]

Hi @crc-32 Are you referring to Compose Multiple platform as KMP UI?

[crc-32]

Hi @crc-32 Are you referring to Compose Multiple platform as KMP UI?

yep! as has been done for the locker screen

[orestesgaolin]

Have you considered generating JNI bindings to the native code so that you can avoid rewriting the app? You can find some examples here. This can automate some of the native API generation and decrease the friction between Dart and Swift/Kotlin/Java. Things like PebbleKit could potentially be exposed directly in Dart.

[crc-32]

Have you considered generating JNI bindings to the native code so that you can avoid rewriting the app? You can find some examples here. This can automate some of the native API generation and decrease the friction between Dart and Swift/Kotlin/Java. Things like PebbleKit could potentially be exposed directly in Dart.

Potentially, the support seems lacking at least according to that page (macOS is listed with no support on flutter and there's no mention of iOS), but there are also deeper issues to consider, Flutter has scared off prospective contributors before for various reasons and has the image of being in a kind of limbo of whether it'll be killed.

[npars]

For reference there is an iOS + Android sample app here: https://github.com/android/kotlin-multiplatform-samples/tree/main/Fruitties

The sample app leverages Skie for Swift bindings: https://skie.touchlab.co/intro#getting-started

Touchlab also has a KMP plugin for Xcode: https://touchlab.co/xcodekotlin