Anyone have a demo or some guidance on how to combine server and mobile app code into one project? I...

# multiplatform

[Evan Foster]

Anyone have a demo or some guidance on how to combine server and mobile app code into one project?
I was hoping to share data models between server and mobile apps, but have app-related view models just compile with the Android an iOS versions. Basically, I want to share code between two parts: a JVM server app and a mobile app, where the mobile app has its own shared code and Android- and iOS-specific Kotlin code.

[CLOVIS]

I'm not sure exactly what you're looking for, but here's a demo I wrote for a few colleagues of mine: https://github.com/CLOVIS-AI/Demo-Kounters

[CLOVIS]

It's a bit of setup to learn how to create Gradle modules, but once you get the hang of it, you can create essentially any structure you want

[CLOVIS]

I usually go with:

core/ ← domain objects, shared between client and server

app/ ← the UI
app-android/ ← Android-specific UI stuff
app-ios/

http-common/ ← DTOs for the HTTP API
http-server/ ← server-side route declarations
http-client/ ← client-side route calls

backend ← just the main method that instantiates everything server-side

[Evan Foster]

Thanks. I think the repo might be private, because I'm getting a 404 on your demo.
Luckily, I think I found a repository that shows client code sharing as well as code shared between client and server. Just had to look a little harder.

[Evan Foster]

I think I just need to practice and learn gradle more thoroughly

[Evan Foster]

If anyone is interested
https://github.com/jjkester/multiplatform-demo/tree/master

[CLOVIS]

Ah, sorry 😐 This repository is public, but it's a full project, not just a demo. https://gitlab.com/opensavvy/formulaide

Although the project structure is somewhat regular, the actual code is quite unusual, so keep that in mind you want to take inspiration.

[Evan Foster]

This is super interesting. Thank you!

[CLOVIS]

The repository you found looks good, but I'm not a fan that it uses the domain objects directly in the API instead of using DTOs.

[CLOVIS]

I prefer having another shared module for DTOs instead of having them in domain . But the Gradle setup looks good, if that's what you're looking for

[CLOVIS]

(it's written in Groovy syntax, and not Kotlin though)

[Evan Foster]

I will keep the idea of separating DTOs in mind, thanks!

[Ahmed na]

hi @Evan Foster

you need to do multi-module multiplatfom project

here is a project start you can use

this will give you a kmp sdk setup , but you can teak it for kmm project
needed modules :
• andoirdApp
• iOSApp
• jvmApi
• models <------ this is shared by backend/frontend

[Evan Foster]

Thanks! I actually managed to get the whole thing set up, at least just with some simple greeting example code. My structure looks like this
• androidApp
• iosApp
• server <— JVM Server App
• domain <— Shared by all
• sharedApp <— Shared by iOS and Android

[Evan Foster]

It took a while to figure it all out, but I successfully ran all three apps, though they’re just simple things

[Adam Brown]

one more, mine also combines all targets in 1 repo: https://github.com/Wavesonics/hammer-editor