Lifecycle functions in common part in KMP

[ahmadhassan5]

Hi!
How can we use ON_PAUSE and ON_RESUME lifecycle functions in Compose Multiplatform as in Jetpack Compose ?
PreCompose provide any way?

[Tlaster]

Yes, there's also a moe.tlaster.precompose.lifecycle.LocalLifecycleOwner, you can use this to handle lifecycle event, there're only 4 lifecycle states in PreCompose: Initialized, Active, InActive, Destroyed.

[ahmadhassan5]

Thank you for the response.

I think you introduced it recently, it was not present before.
InActive is like ON_STOP?

And when Destroyed is called?
If I navigate to another screen, no event is being triggered.

[Tlaster]

On Android InActive is mapping to onPause globally, and Destroyed is being called when a route is removed from back stack.
If you want to handle lifecycle event per screen, you need to call moe.tlaster.precompose.lifecycle.LocalLifecycleOwner inside your screen.

[ahmadhassan5]

Yes, using LocalLifecycleOwner. Check the attached screenshot.
Let me know if changes needed

[Tlaster]

In onDispose you remove the observer, and onDispose is being called when composable is removed from composable tree, which can happens before precompose set the lifecycle to InActive state.
If all you need is just save something when navigating to another screen, you can just use onDispose without any lifecycle.

[ahmadhassan5]

Actually I was assuming its behaviour like Android native side.

Anyway, thank you for your time and amazing library.