LiveData integration

To use the LiveScreenModel you should first import cafe.adriel.voyager:voyager-livedata (see Setup).
State-aware ScreenModel
If your ScreenModel needs to provide a state, use the LiveScreenModel. Set the initial state on the constructor and use mutableState to change the current state.
class PostDetailsScreenModel(
    private val repository: PostRepository
) : LiveScreenModel<PostDetailsScreenModel.State>(State.Init) {
​
    sealed class State {
        object Init : State()
        object Loading : State()
        data class Result(val post: Post) : State()
    }
​
    fun getPost(id: String) {
        coroutineScope.launch {
            val result = State.Result(post = repository.getPost(id))
            mutableState.postValue(result)
        }
    }
}
In your screen use state.observeAsState() and handle the current state.
class PostDetailsScreen : Screen {
​
    @Composable
    override fun Content() {
        val screenModel = rememberScreenModel<PostDetailsScreenModel>()
        val state by screenModel.state.observeAsState()
​
        when (state) {
            is State.Loading -> LoadingContent()
            is State.Result -> PostContent(state.post)
        }
    }
}
Sample
Sample code here.

RxJava integration

Koin integration

Last modified 11mo ago