In KMP koin how do you create platform specific cl...

# koin

[Michal Klimczak]

In KMP koin how do you create platform specific classes that depend on android Context on android but have empty constructor on ios (e.g. class MyDataStore(context: Context)) / class MyDataStore?
1. Create a separate module for each platform and use separate constructors. A lot of boilerplate.
2. Use nullable context and provide null on ios. Not pretty.
3. Provide koin's androidContext() directly in the constructor like MyDataStore(context = androidContext()). Not even sure if it's possible tbh.
4. Anything else?

[Dusan Stefanovic]

If you need context in the constructor then probably it’s the best to have either common interface implemented in each module or expect/actual class and then only Android would have context, and you can use Koin to provide the dependencies… (your number 1 option, I would say that it’s least boilerplate since the context is only available in Android anyways)

if you need context as a function param then you can define it via type alias

// common code
expect class UiContext

@Composable
expect fun uiContext(): UiContext

//android code
actual typealias UiContext = Activity // or Context

@Composable
actual fun uiContext(): UiContext = requireActivity()

// ios code
actual typealias UiContext = UIViewController

@Composable
actual fun uiContext(): UiContext = LocalUIViewController.current